192results about "Apparatus using atomic clocks" patented technology

The application discloses a double-resonance atomic clock ultra-miniature substrate integrated waveguide chamber, comprising: a substrate integrated waveguide annular gap cavity, the substrate integrated waveguide annular gap cavity is formed by longitudinal stacking of a plurality of longitudinal slit substrate integrated waveguides, the longitudinal slit substrate integrated waveguide comprises a metalized through hole and a metal microstrip line, and the longitudinal slit substrate integrated waveguide is provided with a longitudinal slit; a MEMS atomic gas chamber; a mode matching excitation structure for exciting a microwave magnetic field to the substrate integrated waveguide annular gap cavity; and an electromagnetic shielding and heating assembly arranged outside the substrate integrated waveguide annular gap cavity. The application can effectively solve the key problem that the resonant performance of a printed miniature annular gap cavity is extremely sensitive to the size change of subwavelength structure parameters, increase the processing tolerance of the ultra-miniature integrated chamber, reduce the processing difficulty and manufacturing cost of high-precision PCB through holes, and improve product yield.

Provided is an interposer comprising: one or more photonic waveguide; one or more microwave circuit; one or more optical interconnect; and one or more electronic interconnect, further configured to support a quantum sensor, and methods of operating and fabricating thereof. Further provided is a the interposer containing one or more classical sensors. Further provided is a network of quantum sensors supported by said interposers.

In a general aspect, a quantum spectrum sensing system is presented. In some implementations, a system includes a laser system, a vapor cell sensor, an optical detector, and a signal processing system. The laser system includes a first laser that generates a first laser signal; a comb generator that produces a frequency comb signal based on the first laser signal; and a second laser generates a second laser signal. The vapor cell sensor includes a vapor and receives input optical signals based on the frequency comb signal and the second laser signal. The vapor cell sensor produces output optical signals based on interactions of the vapor with the input optical signals and electromagnetic radiation. The signal processing system processes the output optical signals to identifying signals in the electromagnetic radiation that are off resonance with a transition frequency between Rydberg states of the vapor.

According to the packaging method for the chip atomic clock physical system, the getter with the low activation temperature and the solder ring with the high heat sealing temperature are selected, meanwhile, the temperature gradient with the degassing temperature, the getter activation temperature and the vacuum heat sealing temperature rising in sequence is designed, the getter is deposited on the inner wall of the ceramic cap through the chemical vapor deposition technology, and the chip atomic clock physical system is obtained. The integrated structure of the ceramic cap and the getter is formed, the adsorption area is increased through the full-coverage design of the getter, in the out-of-furnace assembly link, the photoelectric component is fixed through a preset bearing area of the ceramic base, the solder ring is limited through an edge sealing area, and the alignment deviation is detected and adjusted in cooperation with an assembly clamp for positioning and a detection tool for detecting and adjusting. The system to be packaged is ensured to be accurately aligned before entering the furnace, part dislocation caused by view limitation in traditional in-furnace assembly is avoided, the comprehensive effects of equipment demand reduction, production efficiency improvement and packaging precision improvement are finally achieved, and it is ensured that the frequency stability and the service cycle of the chip atomic clock meet the use demand.

In a general aspect, antirelaxation coatings are disclosed for coating the interior surfaces of vapor cells. In certain aspects, a vapor cell includes a dielectric body having interior and exterior surfaces. The interior surface defines a cavity in the dielectric body, and the exterior surface defines an opening to the cavity. The vapor cell also includes an antirelaxation coating that is disposed on the interior surface of the dielectric body and includes an organosilane material. The vapor cell additionally includes a vapor or a source of vapor residing in the cavity as well as an optical window that covers the opening to the cavity. The optical window has a surface bonded to the exterior surface of the dielectric body to form a seal around the opening. The vapor or the source of vapor includes alkali metal atoms.

The application belongs to the field of optical precision manufacturing, and relates to a bottom-up atomic gas chamber manufacturing device and manufacturing method. The device is composed of a vacuum cavity, a pumping pipeline, a gas inlet pipeline, a discharge electrode plate set, an insulating support, a gas chamber, a laser, an alkali metal source and a vacuum gauge. The device is used for manufacturing the atomic gas chamber from bottom to top, and can be used for preparing various gas chambers with different gas pressure ratio requirements, thereby helping to realize customized preparation. The device reduces the disadvantages of impurity adsorption on the inner wall of the gas chamber and reduces uncontrollable risks. The device has high integration, high preparation efficiency and large secondary development space, and is favorable for accelerating the technical iteration of the atomic gas chamber and the cross-generation development of key technologies such as nuclear magnetic resonance gyroscopes, atomic clocks and magnetometers.

This application provides an optical clock and its implementation method that directly interacts with an optical comb and an atomic beam. The method includes: an optical comb emitting broadband light with a spectral width of a first spectral width; a filter filtering the broadband light to obtain a comb tooth signal corresponding to the atomic transition frequency; an acousto-optic modulator modulating the comb tooth signal; an atomic furnace emitting an atomic beam; a reflector reflecting the modulated comb tooth signal to form four parallel laser beams that pass through the atomic beam; a laser emitting a probe laser; a beam splitter splitting the probe laser into two beams, which are injected into the atomic beam before and after the four parallel laser beams pass through, respectively, generating a fluorescence signal; a photodetector detecting the fluorescence signal and loading it into a mixer; the mixer demodulating the fluorescence signal to obtain an error signal; a servo feedback circuit generating a servo signal based on the error signal and feeding it back to the optical comb; and the optical comb processing the comb tooth signal based on the servo signal to lock the frequency of the comb tooth signal to the atomic transition frequency.

The present disclosure relates to atomic quantum and photonic apparatuses and methods, for example, atomic radio apparatuses and methods. The disclosure describes various aspects of atomic radio. More specifically, the disclosure describes an atomic radio apparatus and associated hardware. Methods for performing radio communications, sensing, and imaging, are described. The disclosure further describes laser, optical, photonics, atom-photonics, and hybrid micro-integrated subsystems for Rydberg excitation, spectroscopy, and quantum technology.

The invention provides a temperature self-adaptive frequency locking system and method applied to a CPT atomic clock, the system comprises a TEC heating sheet 1, a VCSEL laser 2, a temperature sensor 3, a gas chamber shell 4, a gas chamber 5 and the like, the VCSEL laser 2 is tightly attached to the surface of the TEC heating sheet 1, the temperature sensor 4 is arranged near the outer side of the gas chamber 5, the gas chamber 5 is wrapped by the gas chamber shell 4, and the TEC heating sheet 1 is arranged in the gas chamber shell 4. A heating resistor network 7 is arranged at the lower part of the air chamber 5; a laser beam emitted by the VCSEL laser 2 passes through the gas chamber 5 and then is received by the photoelectric sensor 6. The whole control is executed by a CPT atomic clock control system 9; and feedback signals of the temperature sensor 4 are respectively transmitted to the frequency drift algorithm processing module 10 and the control parameter adjustment algorithm processing module 11. Output signals of the two modules are transmitted to a CPT atomic clock control system 9; a feedback signal of the photoelectric sensor 6 is also transmitted to the CPT atomic clock control system 9; the VCO voltage-controlled crystal oscillator 8 is controlled by the CPT atomic clock control system 9 and outputs frequency to the outside.

In a general aspect, methods for manufacturing vapor cells are disclosed. In certain aspects, a method of manufacturing a vapor cell includes obtaining a dielectric body that has interior and exterior surfaces. The interior surface defines a cavity in the dielectric body, and the exterior surface defines an opening to the cavity. The method includes forming an antirelaxation coating on the interior surface of the dielectric body. The antirelaxation coating comprising an organosilane material. The method additionally includes disposing a vapor or a source of vapor in the cavity and obtaining an optical window that comprises a surface. The vapor or the source of vapor includes alkali metal atoms. The method also includes bonding the surface of the optical window to the exterior surface of the dielectric body to form a seal around the opening to the cavity.

The application discloses a kind of high-precision Beidou time service master clock devices based on double-chip atomic clock fusion, it relates to timing synchronization technical field, the device includes satellite receiving module, master control processing module, double-chip atomic clock module, clock taming module, time-frequency output module, display control module and power module;Each module is cooperated by work mode automatic switching mechanism Work;Double-chip atomic clock module adopts two pieces chip level atomic clock and constitutes master-slave redundant architecture, and the phase and frequency deviation information of main atomic clock and slave atomic clock are fused and mutually checked by extended Kalman filtering;The taming algorithm in clock taming module is formed by extended Kalman filtering link, PID controller link, digital phase-locked loop link cascade;Work mode automatic switching mechanism is according to the automatic switching of work mode according to the operating state of the device;Overcome the insufficient of time service precision, low reliability, taming algorithm performance is limited and so on in prior art.

In a general aspect, a communication system comprises a first station and a second station. Each station includes a transceiver and a control subsystem. The transceiver includes having one or more photonic crystal masers and one or more photonic crystal receivers. The control subsystem includes one or more lasers optically coupled to the one or more photonic crystal masers and the one or more photonic crystal receivers. The control subsystem also includes modulation electronics in communication with the one or more lasers and configured to control one or more properties of a first input optical signal received by each photonic crystal maser. The control subsystem additionally includes demodulation electronics in communication with the one or more lasers and configured to control one or more properties of a second input optical signal received by each photonic crystal receiver.

The invention relates to a reflective two-photon rubidium clock atomic fluorescence collection system. The system comprises a rubidium atom gas chamber, a reflector, an optical filter, a lens and a photoelectric detector. The rubidium atom gas chamber is a reflection cavity with a parabolic cylinder structure, the side plane of the rubidium atom gas chamber is a polling light incident plane and is plated with a color separation film for transmitting polling light and reflecting atomic fluorescence, and the polling light incident point is located at the focal point of the parabolic section; the opposite plane of the parabolic cylinder of the reflection cavity is an atomic fluorescence emergent surface, the inner wall of the parabolic cylinder is plated with an atomic fluorescence reflecting film, rubidium atom steam is contained in the parabolic cylinder, and a preset included angle is formed between the reflector and the atomic fluorescence emergent surface and used for reflecting a light path to enable a fluorescence collection light path and a polling light path to be arranged in parallel and converging emergent atomic fluorescence. The optical filter filters stray light with non-target wavelength, the lens converges atomic fluorescence after light filtering, the photoelectric detector receives the fluorescence and converts the fluorescence into an electric signal, and frequency stabilization control of the laser is achieved. By adopting the system, the space utilization rate, the system signal-to-noise ratio and the fluorescence collection efficiency can be improved.

The invention provides an atomic clock error simulation method and device, equipment and a storage medium. Relates to the technical field of high-stability time keeping. The method comprises the following steps: decomposing the clock difference of an atomic clock into a deterministic trend term and a random noise term, and obtaining a deterministic trend term simulation value through polynomial fitting; performing identification and intensity decomposition on the random noise item according to the clock difference frequency stability; simulating the random running frequency modulation noise, the random walking frequency modulation noise, the white frequency modulation noise and the white phase modulation noise according to a set simulation formula to obtain corresponding power law noise simulation values; for the flicker walk frequency modulation noise, the flicker frequency modulation noise and the flicker phase modulation noise, fitting by using a first-order Markov process according to the power spectrum density characteristic to obtain a corresponding power law noise simulation value; and adding the deterministic trend term simulation value and various power law noise simulation values to obtain a simulation clock difference value of the corresponding stability. According to the method, atomic clock error simulation which is clear in physical significance, low in calculation cost and high in interpretability can be realized.

An atomic oscillator of the present disclosure includes: a gas cell in which alkali metal atoms are encapsulated; a light generator that applies an irradiation light having at least two different frequency components to the gas cell; a light detector that detects a transmitted light having transmitted by the gas cell; and a controller that determines a resonance frequency of the alkali metal atoms based on a light amount of the transmitted light by the gas cell and controls an oscillation frequency based on the determined resonance frequency. The irradiation light is applied by two irradiation methods in which characteristics of change in the resonance frequency due to change in intensity of the irradiation light are mutually different. The controller controls the oscillation frequency based on a result of comparison between the resonance frequencies when the irradiation light is applied to the gas cell by the two irradiation methods, respectively.

A photonic device 100 comprises a first interface 2 coupling a plurality of first device waveguides 4 to a plurality of light source 14 waveguides 16 and a second interface 6 linking a plurality of s

Optical frequency reference apparatus (10) comprising - an atomic vapor cell (1), containing a vapor of reference atoms, said atomic vapor cell (1) comprising a first end (41) having a first window (4) and a second end (61), - a laser source (11) for generating a laser probe beam (3) adapted to excite a two-photon optical transition of said reference atoms, - an optical detector (14), adapted to detect a fluorescence signal emitted by said reference atoms, and - at least one reflective element (5, 15) wherein the laser source (11), the atomic vapor cell (1) and the at least one reflective element (5, 15) are configured such that, in operation, the probe beam (3) enters the atomic vapor cell (1) through said first window (4) at said first end (41) and crosses said vapor of reference atoms until said second end (61) through a defined optical path in a first forward direction (3a), the probe beam (3) is reflected backwards by said at least one reflective element (5, 15) and crosses said vapor of reference atoms a second time through the same defined optical path, in a second direction (3b) opposite to the first forward direction (3a), characterized in that the optical frequency reference apparatus (10) further comprises means (7, 9) for absorbing the reflected laser probe beam (3) exiting from the atomic vapor cell (1) according to the second direction (3b).

The application provides a radio frequency source circuit and a laser frequency shift lock cavity signal generation method, which can be applied to the field of cold atom optical lattice clock technology. The radio frequency source circuit comprises a control sub-circuit, a phase-locked loop sub-circuit and an output power control sub-circuit. The control sub-circuit is used for receiving a digital control instruction from an upper computer and taking a synchronous clock as a working clock, performing amplitude-phase conversion and phase waveform conversion in parallel based on preset modulation data carried by the digital control instruction, and outputting a phase control word and a phase demodulation signal. The phase-locked loop sub-circuit is used for frequency multiplication of a reference clock and outputting a clock signal suitable for the working frequency of a frequency synthesizer as the working reference clock of the frequency synthesizer. The frequency synthesizer is used for taking the working reference clock as a frequency reference, realizing phase synchronization by combining the synchronous clock, and adjusting the phase of an output signal based on the phase control word. The output power control sub-circuit is used for adjusting the power of the output signal of the frequency synthesizer based on preset power modulation data to output a laser frequency shift lock cavity signal.

The application discloses a rubidium two-photon transition optical clock system and processing method based on double-color excitation, and the device comprises a laser generation module, a physical component module, an integrated optical fiber frequency comb, a sum frequency generator, a first optical waveguide frequency doubler, a first frequency stabilization server, a second frequency stabilization server, a proportional integral filter, a first photoelectric detector and a second photoelectric detector; the laser generation module is connected with the physical component module; the integrated optical fiber frequency comb is connected with a first wavelength division multiplexing beam splitter; one output end of the first wavelength division multiplexing beam splitter is connected with a first optical fiber beam splitter; the other output end is connected with the first optical waveguide frequency doubler; one end of the first optical fiber beam splitter is connected with the first photoelectric detector, and the other end is connected with the laser generation module; the first photoelectric detector is connected with the laser generation module; and the laser generation module is connected with the sum frequency generator. The application solves the problems of low frequency accuracy and short-term stability, and high system complexity and energy consumption in the prior art.

In a general aspect, gettering elements are disclosed for absorbing gas species from a cavity of a vapor cell. In certain aspects, a vapor cell includes a dielectric body having interior and exterior surfaces. The interior surface defines a cavity in the dielectric body, and the exterior surface defines an opening to the cavity. The dielectric body also includes a channel having a porous layer that is configured to absorb a gas species from the cavity. The vapor cell also includes a vapor or a source of vapor residing in the cavity as well as an optical window that covers the opening to the cavity. The optical window has a surface bonded to the exterior surface of the dielectric body to form a bonded interface of the vapor cell. The bonded interface includes a seal around the opening, and the vapor or the source of vapor includes alkali metal atoms.

The invention relates to an atomic vapor cell (2), comprising: a substrate (8) having a window (8a), the substrate (8) preferably being made of silicon, a first and a second optical component (9a, 9b) arranged on opposite sides of the substrate (8), the window (8a) in the substrate (8) together with the optical components (9a, 9b) delimiting an atomic vapor chamber (7). The second optical component (9b) has a reflective surface (12a), preferably made of silicon, configured to reflect pump light propagating within the atomic vapor chamber (7), in particular at least a portion of a laser beam (4) that enters the atomic vapor chamber (7) from the first optical component (9a). The invention also relates to a sensor device (1) comprising such an atomic vapor cell (2).

The invention relates to the technical field of optical atomic clocks, and discloses a multi-mode magnetic field generation and regulation device and method for a strontium atom optical clock, and the device comprises a three-dimensional magnetic field coil, a magnetic field control system, and a magneto-optical trap. The three-dimensional magnetic field coil comprises an X-direction magnetic field coil, a Y-direction magnetic field coil and a Z-direction magnetic field coil; the X-direction magnetic field coil, the Y-direction magnetic field coil and the Z-direction magnetic field coil are mutually orthogonal and are respectively arranged along opposite positions to form a cubic framework, and the magneto-optical trap is positioned in the cubic framework; the magnetic field control system is electrically connected with the X-direction magnetic field coil, the Y-direction magnetic field coil and the Z-direction magnetic field coil. The technical problems that an existing strontium atom optical clock system is complex in structure and high in power consumption and thermal load, and time sequence characteristics used by a magnetic field in the operation process of the optical clock are not fully utilized are solved.

To provide an atomic oscillator that can be miniaturized and manufactured on-chip while keeping costs down. [Solution] The atomic oscillator 10 detects the light transmitted through the gas cell 8 and the gas cell 8 containing alkali metal atoms to generate an electrical signal S LI A photodetector 9 converts the signal S to a high-frequency oscillator 31 using an FBAR. LI The input is a feedback signal S. FB A control circuit 1 outputs a feedback signal S FB The control circuit 1 further includes a laser light source 6 that outputs modulated light and introduces it into the gas cell 8, and a control circuit 1 further includes a variable capacitor 32 that adjusts the oscillation frequency of the high-frequency oscillator 31, and a high-frequency adjustment signal S tune The frequency converter 41 outputs the signal S output by the high-frequency oscillator 31. OUT The high-frequency adjustment signal S tune The system includes a frequency mixer 42 that mixes the gas with the gas and outputs a signal at a frequency that synchronizes with the resonant frequency of the gas cell 8.

An exemplary embodiment of the present disclosure provides a chip-scale atomic beam system including an atomic vapor source, a plurality of conduits, and a propagation chamber. The atomic vapor source chamber may include an atomic vapor source configured to emit atomic vapor. The plurality of conduits may have a first end and a second end. The first end may be in fluid communication with the atomic vapor source chamber. The plurality of conduits may be configured to collimate the atomic vapor as it travels through the plurality of conduits from the first end to the second end. The propagation chamber may be in fluid communication with the second ends of the plurality of conduits. The propagation chamber may have an internal pressure lower than an internal pressure of the atomic vapor source chamber to allow the collimated atomic vapor to propagate through the propagation chamber.

The embodiment of the utility model provides a hydrogen atomic clock temperature control system. The system comprises at least one temperature control subsystem, and the temperature control subsystem comprises a control module, a temperature detection module and a temperature adjusting module. The temperature detection module is arranged on the outer side of a microwave resonant cavity of the hydrogen atomic clock, and the temperature detection module is used for collecting the temperature of the microwave resonant cavity; the temperature adjusting module comprises a refrigerating unit and a heating unit; the refrigerating unit and the heating unit are arranged on the outer side of the microwave resonant cavity; the refrigeration unit is used for cooling the microwave resonant cavity; the heating unit is used for heating the microwave resonant cavity; the control module is electrically connected with the refrigeration unit, the heating unit and the temperature detection module. The control module is used for adjusting the temperature of the microwave resonant cavity through the refrigerating unit or the heating unit. According to the hydrogen atomic clock temperature control system provided by the embodiment of the utility model, the limitation that the existing hydrogen atomic clock temperature control system only has a one-way heating function but lacks a refrigeration function is solved, and rapid adjustment and stable maintenance of the temperature are realized.

This invention discloses a time-frequency maintenance method, apparatus, and system based on dual-source discipline and drift prediction, relating to the field of satellite time synchronization and time transfer technology. The method includes: S1, acquiring first data and second data in real time; S2, analyzing the first frequency offset based on the first data and analyzing the cumulative phase of the second frequency offset based on the second data; S3, analyzing the target phase value based on the cumulative phase of the second frequency offset and the first data; S4, analyzing the frequency offset correction value based on the target phase value and the first frequency offset; S5, controlling the center frequency of the thermostatic crystal oscillator based on the frequency offset correction value and outputting a time-frequency signal; S6, returning to S1 and repeating S1-S5 in a loop to achieve time-frequency maintenance. By introducing the BeiDou satellite navigation system as a time-frequency reference source in addition to the cesium clock, the simultaneous operation of the two sources achieves the following objectives: reducing the frequency offset of the cesium clock, improving frequency accuracy, and significantly improving the timekeeping performance of the cesium clock.

The application provides a kind of laser pumped cesium atomic beam clock parameter adaptive setting device and method, relating to atomic clock technical field, including cesium beam tube unit;Cesium beam tube drive unit;Frequency stabilization laser light source unit;Acoustooptic frequency shift unit;Crystal oscillator lock frequency unit;Temperature acquisition and control unit;Wherein, main control unit is connected each controlled module by communication interface, and in-machine computer runs host computer software: calculate relative frequency deviation and allan variance, obtain frequency deviation sequence and allan variance data set;Determine the optimal working parameter combination corresponding to peak value;Linkage executes primary temperature control, secondary temperature control and tertiary temperature control, realizes temperature gradient compression and wavelength stability control;Compare real-time monitoring parameters with preset threshold, determine alarm level, thereby trigger system response instruction.The beneficial effects of the application are to reduce labor cost, improve temperature adaptability and improve long-term stability index.

The present invention discloses a highly charged Nickel ion optical clock and its implementation method. It uses Ni12+ ions as the clock's reference system, which provides superior anti-interference capabilities and measurement precision compared to conventional low-charge-state ion optical clocks. The Ni12+ ions possess two transition spectral lines at 498 nm and 511 nm that can serve as clock transitions. Utilizing both 498 nm and 511 nm lasers enables a single ion reference system to output two clock signals, allowing for mutual verification. Frequency calibration using these two laser frequencies facilitates the timely detection of operational issues through abrupt changes in their frequency ratio. This approach avoids the problem inherent in a single optical frequency clock, where losing synchronization with the time reference can result in immediately undetectable, erroneous clock signal outputs, thereby significantly enhancing the overall stability of the optical clock.

A mounting apparatus for suspending an intercalated compound includes spring connectors that couple to an intercalated complex that comprises the intercalated compound in an enclosure. The spring connectors exert spring forces on the intercalated complex that cause it to be suspended between the spring connectors during operation. In doing so, the intercalated compound is thermally isolated relative to the exterior of the enclosure it is disposed in. The mounting apparatus can be used as part of an atomic clock sensor.

To achieve Ramsey spectroscopy while effectively suppressing the Doppler effect.SOLUTION: A Ramsey spectroscopic device 1 includes: an optical path 10; an optical path length stabilizing circuit 30 that stabilizes the length of the optical path 10; a modulator 20 that is optically connected to the optical path 10, generates, in a pulse shape multiple times, a resonant laser beam at a first frequency f1 that causes resonance of atoms, molecules, or ions, which are a spectroscopic target, and generates a non-resonant laser beam at a second frequency f2 that does not cause resonance; and a spectroscopic unit 200 that spectroscopically disperses the spectroscopic target. The spectroscopic unit detects a state change of the spectroscopic target according to the frequency f1 by irradiating the spectroscopic target with the resonant laser beam.SELECTED DRAWING: Figure 1