12 results about "Atomic state" patented technology

This invention relates to an ultra-miniature cold atom inertial sensor with extended interference time, comprising a Raman optical path, a cooling optical path, a MOT coil assembly, a detector chip, and an ultra-miniature passive vacuum cavity. The MOT coil assembly is symmetrically arranged around the outer periphery of the ultra-miniature passive vacuum cavity to trap atomic clusters within the cavity using a magnetic field and to adjust the free fall distance of the atomic clusters. The cooling optical path penetrates both the MOT coil assembly and the ultra-miniature passive vacuum cavity to cool, trap, and prepare the atomic clusters. The Raman optical path is vertically incident on the ultra-miniature passive vacuum cavity to manipulate the cooled and trapped cold atomic clusters for interference. The detector chip is positioned adjacent to the ultra-miniature passive vacuum cavity to detect the atomic state signals after interference. This invention reduces the complexity, size, and weight of the sensor. By modulating the magnetic field to change the position of the trapped cold atomic clusters, adjusting the free fall distance of the atomic clusters, and extending the interference distance and time, it improves the accuracy of inertial measurement.

Some embodiments of the present disclosure provide atom beam interferometry. MTL beams are directed to respective MTL regions along a 3D-cooled atom beam. Within each MTL region, the respective MTL beam coherently imparts photon recoil momenta to atoms of the atom beam to produce an interference signal in the atom beam. The MTL beams are switched between first and second cases providing first and second interfering trajectory paths for the atom beam, and the atom beam is continuously directed through the MTL regions while switching the MTL beams. Atoms from the atom beam are received along the first and second interfering trajectory paths at a detection region. State-dependent responses from the atoms of the atom beam are induced in the detection region to provide data of atomic states occupied by the atoms. The data of the atomic states is translated into an interferometry measurement. Related interferometers are also disclosed.

The application discloses an acceleration measurement method and device based on optical suspended microparticle centroid motion quantum state, which utilizes optical tweezers to trap a four-level atom and a nanometer microparticle in an optical cavity simultaneously, the optical cavity is driven by driving laser LC, a stable cavity optical field, i.e., cavity mode, is excited and formed in the cavity; the cavity optical field is coupled with the internal energy level transition of the atom and the centroid motion of the nanometer microparticle simultaneously, and three control lasers LES, LER and LGR are used to drive three energy level transition processes of the atom; by controlling the three control lasers LES, LER and LGR, a rapid adiabatic process and an atomic state inversion process are realized; wherein, in the process of preparing the centroid motion of the nanometer microparticle to a target Fock state, the forward rapid adiabatic process and the atomic state inversion process are iteratively executed in sequence; in the acceleration measurement process, the reverse rapid adiabatic process, the atomic state inversion process and the population transfer process based on a pi pulse are comprehensively utilized. The application can further improve the measurement sensitivity.

A method for atom-based closed-loop control includes exciting atoms of a gas into one or more Rydberg states, applying one or more signal processing functions to the one or more Rydberg states, and regulating a characteristic of the applied one or more signal processing functions based on, at least in part, a response of the one or more Rydberg states to the one or more signal processing functions. A system for internal quantum-state-space interferometry includes an atomic receiver, an interferometric pathway, and a detector. The interferometer includes an atomic vapor with first atomic states and second atomic states. The interferometric pathway from RF phases between the first and second atomic states is closed by a quantum-state-space. The detector is configured to detect a readout of an interferometric signal. Embodiments include atom-based automatic level control, baseband processors, phase-locked loops, voltage transducers, raster RF imagers and waveform analyzers.

The present disclosure provides methods and systems for performing non-classical computations. The methods and systems generally use a plurality of spatially distinct optical trapping sites to trap a plurality of atoms, one or more electromagnetic delivery units to apply electromagnetic energy to one or more atoms of the plurality to induce the atoms to adopt one or more superposition states of a first atomic state and a second atomic state, one or more entanglement units to quantum mechanically entangle at least a subset of the one or more atoms in the one or more superposition states with at least another atom of the plurality, and one or more readout optical units to perform measurements of the superposition states to obtain the non-classical computation.

To provide a method and system for performing non-classical computations.SOLUTION: An optical system 200 use, as a whole, a plurality of spatially distinct optical trapping sites to trap a plurality of atoms, one or more electromagnetic delivery units 220 to apply electromagnetic energy to one or more atoms of the plurality to induce the atoms to adopt one or more superposition states of a first atomic state and a second atomic state, one or more entanglement units to quantum mechanically entangle at least a subset of the one or more atoms in the one or more superposition states with at least another atom of the plurality, and one or more readout optical units 230 to perform measurements of the superposition states to obtain the non-classical computation.SELECTED DRAWING: Figure 2

To improve EM sensing, detection, measurement, imaging, reception, communication, and source generation by extending capabilities beyond those achievable with conventional sensor technologies and using atom-based quantum sensor technologies.SOLUTION: A method for atom-based closed-loop control includes exciting atoms of a gas into one or more Rydberg states, applying one or more signal processing functions to the one or more Rydberg states, and adjusting characteristics of the applied one or more signal processing functions based at least in part on a response of the one or more Rydberg states to the one or more signal processing functions. A system for internal quantum state space interferometry includes an atomic receiver, an interference path, and a detector. The interferometer includes an atomic vapor having a first atomic state and a second atomic state. The interference path from an RF phase between the first and second atomic states is closed by a quantum state space. The detector is configured to detect a readout of an interference signal.SELECTED DRAWING: Figure 1

The invention relates to a tunable laser frequency stabilization system and method based on Rydberg atom direct current stark, and belongs to the technical field of laser frequency stabilization. The tuned frequency is determined by the atomic state and the voltage at the two ends of the polar plate and can be calculated through a theoretical model, the locked laser frequency has high precision and long-term stability, and the precision and the long-term stability are within MHz. In the invention, the atomic gas chamber with the built-in electrode plate is adopted to avoid the problem that a traditional gas chamber can shield a direct-current electric field, a direct-current electric field can be generated in the atomic gas chamber by applying a voltage to the two ends of the electrode plate, and an atomic energy level moves due to a direct-current stark effect, so that the tuning of the frequency of the coupled laser can be completed; the applied voltage is generally below 10V, the tuning range is between GHz and dozens of GHz according to different selected Rydberg states, and the operation is relatively convenient and simple.

The present disclosure provides methods and systems for performing non-classical computation. The methods and systems generally use: a plurality of optically distinct optical trapping sites to trap a plurality of atoms; one or more electromagnetic delivery units to apply electromagnetic energy to one or more of the plurality of atoms to induce the atom to adopt one or more superposition states of a first atomic state and a second atomic state; one or more entangling units to quantum mechanically entangle at least a subset of the one or more atoms in the one or more superposition states with at least another atom of the plurality of atoms; and one or more readout optical units to perform a measurement of the superposition state to obtain a non-classical computation.

A method for atom-based closed-loop control includes exciting atoms of a gas into one or more Rydberg states, applying one or more signal processing functions to the one or more Rydberg states, and regulating a characteristic of the applied one or more signal processing functions based on, at least in part, a response of the one or more Rydberg states to the one or more signal processing functions. A system for internal quantum-state-space interferometry includes an atomic receiver, an interferometric pathway, and a detector. The interferometer includes an atomic vapor with first atomic states and second atomic states. The interferometric pathway from RF phases between the first and second atomic states is closed by a quantum-state-space. The detector is configured to detect a readout of an interferometric signal. Embodiments include atom-based automatic level control, baseband processors, phase-locked loops, voltage transducers, raster RF imagers and waveform analyzers.

The present disclosure provides methods and systems for performing non-classical computations. The methods and systems generally use a plurality of spatially distinct optical trapping sites to trap a plurality of atoms, one or more electromagnetic delivery units to apply electromagnetic energy to one or more atoms of the plurality to induce the atoms to adopt one or more superposition states of a first atomic state and a second atomic state, one or more entanglement units to quantum mechanically entangle at least a subset of the one or more atoms in the one or more superposition states with at least another atom of the plurality, and one or more readout optical units to perform measurements of the superposition states to obtain the non-classical computation.

The invention relates to the technical field of equipment control, and provides an equipment control method and device, equipment and a computer storage medium. The method comprises the following steps: acquiring equipment state information, collected by a multi-mode sensor, of the electronic equipment; identifying the equipment state information to obtain a plurality of atomic states; according to the multiple atomic states, a pre-constructed state map is inquired, multiple state sequences are obtained, nodes of the state map represent the atomic states, edges of the state map represent the incidence relation between the states, and weights of the edges represent the historical execution effect of a task corresponding to the conversion from the precursor state to the subsequent state; determining a target state sequence from the plurality of state sequences; the target state sequence is analyzed into at least one equipment control task, and the equipment control task is used for indicating a control action executed by the electronic equipment so as to achieve a state evolution target defined by the target state sequence; and controlling the electronic equipment according to the equipment control task.