52 results about "Photon conversion" patented technology

The invention discloses a high-speed multi-photon detection system and method. The system comprises a detector and a signal processing circuit, wherein the detector is composed of a window plated with a photoelectric cathode, a micro-channel plate stack and an anode; a plurality of incident photons are converted into a plurality of photoelectrons by the photoelectric cathode, and the photoelectrons are converted into electron cloud by the micro-channel plate stack; the incident electron cloud is divided into multiple paths by three layers of staggered metal strip electrodes of the anode, and charge collection is carried out to obtain charge short pulses of each layer of electrode; the signal processing circuit converts the charge short pulses transmitted by the three layers of electrodes into digital pulse signals, obtains the centroid coordinates of the electron cloud from the digital pulse signals as the abscissa value, the ordinate value and the verification value of the incident photon position, combines the abscissa value, the ordinate value and the verification value based on the screening condition to obtain the target two-dimensional coordinates, and finally obtains the target two-dimensional coordinates. And transmitting to a terminal for imaging display. According to the invention, a plurality of synchronous photons can be detected, the overall counting rate of the detector is greatly improved, and the detection efficiency is improved.

The application belongs to the field of spectral measurement and imaging, and specifically discloses a single-photon detection device and a rapid spectral and imaging system based on the same. According to the application, a transmission optical fiber spectrometer separates each waveband complex light according to wavelength in space, and couples the photons of different wavelengths into an optical fiber array for time delay, so that the different wavelengths are delayed to different time points and output to a single-photon detection device. The single-photon detection device converts the photons of different wavelengths arriving at the device in time sequence into electrical signals, and obtains the number of photons at different time points after amplification and signal processing, and converts the number of photons into a spectrum. Since the transmission spectrometer can provide higher diffraction efficiency, higher spectral resolution and signal strength, the single-photon detection device can provide a faster and more accurate photon discrimination and photon counting method, and compared with the prior art, the whole can measure the spectrum more quickly, and has higher spectral resolution and signal strength.

The application belongs to the technical field of photon imaging detection, and particularly relates to a photon counting imaging detection system based on a mixed anode. The system comprises a vacuum sealed tube detector composed of a window coated with a photocathode, a microchannel plate stack and a mixed anode, and a signal processing circuit. The photocathode is used for converting photons incident through the window into photoelectrons. The microchannel plate stack is used for converting the photoelectrons into electron clouds. The mixed anode comprises a strip anode and a delay line anode arranged orthogonally, and the mixed anode transmits the collected charge short pulses of each channel to the signal processing circuit. The signal processing circuit calculates the two-dimensional coordinates of the photons based on the collected charge short pulses of each channel, and then transmits the two-dimensional coordinates of the photons to a terminal for imaging display. The application provides a photon counting imaging detection system based on a cross strip-delay line mixed anode, and solves the problem that the existing position sensitive anode detector cannot simultaneously have high spatial resolution and high temporal resolution.

The present disclosure relates to a method for manufacturing a pixel that includes depositing an insulating layer on an exposed face of an interconnect structure of an integrated circuit, the interconnect structure having a conductive element flush with said exposed face; etching an opening passing through the insulating layer to the conductive element; depositing an electrode layer on and in contact with the conductive element and the insulating layer; performing chemical mechanical planarization up to the insulating layer, a portion of the electrode layer left in place in the opening forming an electrode; and depositing a film configured to convert photons into electron-hole pairs when a ray at an operating wavelength of the pixel reaches the pixel.

The quantum system for executing the CNOT gate comprises a linearly connected command circuit providing radiation, a target cat qubit device, and a control qubit device, the target cat qubit comprising a nonlinear component called ATS, which serves two purposes: namely, to appropriately process the two-photon conversion Hamiltonian for cat qubit stabilization and to appropriately process the CNOT Hamiltonian for executing the CNOT gate by the control qubit device. At any given time, the ATS plays either the role of cat qubit stabilization or the role of the CNOT gate.

A lighting device (ED) is fitted to a vehicle including a license plate (LP), and comprises: - a source (SP) generating photons having a first wavelength corresponding to a first color and intended to provide a brake light function at a first location, - a selection device (SD) designed to direct at least some of the generated photons to a second location, and - a converter (CC) installed at this second location and converting the photons arriving at the second location into photons having a second wavelength corresponding to a second color and intended to provide a license plate (LP) illumination function. Figure 2

An energy converter for converting photons into electrical energy is implemented as an integrated circuit in which the photons propagate in a coherent manner, and includes a configuration of waveguide

Embodiments of the present disclosure relate to reverse body biasing of a transistor using a photovoltaic source. A metal-oxide-semiconductor (MOS) transistor has a source terminal, a drain terminal, a gate terminal, and a body terminal. The source terminal is connected to receive a supply voltage, and the body terminal is connected to receive a reverse body bias voltage. A photovoltaic circuit has a first terminal connected to the source terminal of the MOS transistor and a second terminal connected to the body terminal of the MOS transistor. The photovoltaic circuit converts photons received from the environment to generate the reverse body bias voltage.

According to the acousto-optic modulator for realizing microwave photon conversion and the preparation method thereof provided by the invention, the runway type micro-ring is constructed on the piezoelectric film layer, the acoustic resonance frequency is accurately matched with the free spectral range of the runway type micro-ring structure, the cyclic generation of an optical modulation sideband is realized, the interaction between light waves and sound waves is greatly enhanced, and the optical modulation efficiency is improved. The acousto-optic coupling efficiency is remarkably improved, the power consumption of the device is greatly reduced, microwave photon conversion is achieved, the device is compact in overall structure and small in size, high-density on-chip integration is easy to achieve, further, periodic polarization is carried out on the interdigital electrodes, a cavity is formed under the piezoelectric film layer, and the photoelectric conversion efficiency of the device is improved. And the piezoelectric film layer is suspended, so that the working bandwidth of the device is further improved, and the requirement of high-speed information processing is met.

A thermophotovoltaic (TPV) generator includes one or more ring modules including a frame formed from a high thermal conductivity material. Each ring module may be attached to another ring module in an axially stacked manner with a gas sealing engagement between them. Each ring module includes, on either a radially inward or radially outward surface thereof, TPV cells having a TPV cell output power no lower than 40% of the product of open circuit voltage and short circuit current at the maximum expected incident photon flux with energies above the TPV cell bandgap,. Each TPV cell converts photons with energy above the TPV cell bandgap thereof from a radiator into electrical energy. Each TPV cell includes a heat mirror on its surface, facing the radiator, which reflects photons with an energy lower than the TPV cell band gap back to the radiator.

A smart energy recycling system and methods are disclosed. The smart energy recycling system comprises an energy device comprising emitting substrates configured to emit light of a pre-defined wavelength after receiving power from power grid. A photochromatic material disposed around emitting substrates. In an embodiment, photochromatic material is configured to convert photons emitted by emitting substrates into electrical energy. In an embodiment, the photochromatic materials corresponds to PV solar cells. An integrated energy storage device is electrically connected to an energy device and configured to store electrical energy produced by photochromatic materials. A regulation circuit of integrated energy storage device is configured to regulate and direct voltage and current generated by photochromatic materials and provide electrical energy to electrical grid or loads. In an embodiment, electrical energy being stored in an integrated energy storage device.

A quantum system for executing a CNOT gate includes a control circuit that provides radiation, a target cat qubit device and a control qubit device that are linearly coupled. The target cat quantum bit comprises a non-linear element, namely ATS, and has two purposes: the first purpose is to design two-photon conversion Hamiltonian for cat quantum bit stabilization, and the second purpose is to design CNOT Hamiltonian for executing a CNOT gate together with a quantum bit control device. At any time point, the ATS plays a role of cat quantum bit stabilization or plays a role of a CNOT gate.

A photovoltaic generation assembly is disclosed, comprising a plurality of vertically oriented solar tubes, each aligned with a corresponding Fresnel lens mounted on a movable Fresnel lens holder. The system includes a height adjustment assembly that controls the vertical position of the Fresnel lenses to optimize light focus based on solar movement. The adjustment mechanism may include a stepper motor driving a gear-based shaft assembly, or alternatively, a solenoid-based system that magnetically elevates or lowers the lens holder. Each solar tube incorporates a down-conversion assembly to shift high-energy photons, an up-conversion assembly to convert low-energy infrared photons into usable light, and a reflective base for photon recycling. An optional thermoelectric layer recovers heat energy. The arrangement increases photon absorption via internal reflections, improving solar conversion efficiency and enabling multiband energy harvesting from a compact, modular solar architecture.

The embodiment of the application discloses a kind of ultraviolet dot array detector and power equipment discharge detection system, including filter layer, active layer, charge separation layer, two-dimensional material modification layer and interdigital electrode.Filter layer is used to filter mixed light to obtain solar blind ultraviolet light.The material of active layer is β-Ga2O3, for converting solar blind ultraviolet photon into randomly distributed electron-hole pair.Charge separation layer is used to convert randomly distributed electron-hole pair into directional drift electron and hole.Two-dimensional material modification layer is used to transport the electron that drifts through electrode interface.Interdigital electrode is used to convert the electron that passes through electrode interface into electrical signal and then output.The embodiment of the application carries out hard filtering by filter layer to eliminate the interference of ambient light.Based on the physical characteristics of active layer material, most of the background light interference is eliminated from the nature of the material.Therefore, by different dimensions, the interference of ambient light on discharge detection is removed, and the detection effect is improved.

Techniques disclosed herein relate to photon sources with high spectral purity and high brightness. In one embodiment, a photon-pair source includes a pump waveguide, a first resonator coupled to the pump waveguide to couple pump photons from the pump waveguide into the first resonator, a second resonator coupled to the first resonator, and an output waveguide coupled to the second resonator. The second resonator is configured to convert the pump photons into photon pairs. The second resonator and the first resonator are configured to cause a coupling-induced resonance splitting in the second resonator or the first resonator. The second resonator and the output waveguide are configured to couple the photon pairs from the second resonator into the output waveguide. In some embodiments, the photo-pair source includes one or more tuners for tuning at least one of the first resonator or the second resonator.

An X-ray detector for a computed tomography (CT) imaging system is provided. The X-ray detector includes a plurality of detector modules. Each detector module of the plurality of detector modules includes a scintillator layer configured to convert X-ray photons into lower energy light photons. Each detector module of the plurality of detector modules also includes a light imager layer configured to convert the light photons into electrons, wherein the light imager layer includes a light imager panel comprising an array of photodiodes. Each detector module of the plurality of detector modules further includes a readout device that converts the electrons into digitized pixel values, wherein each photodiode of the array of photodiodes is coupled to a respective dedicated readout channel of the readout device via a respective dedicated data line, and the readout device is configured to continuously directly readout the electrons from the array of photodiodes.

A single photon emission computed tomography (SPECT) imaging system includes a detector configured to receive photons emitted by a radiopharmaceutical in an examination region and convert the received photons to measured projection data and a collimator with septa spatially arranged with respect to each other and the detector to provide channels to pass photons that traverse the channels and absorb photons that impinge the septa. A first sub-set of the photons emitted by the radiopharmaceutical traverse the channels without impinging the septa and are directly received by the detector. A second sub-set of the photons emitted by the radiopharmaceutical traverse the septa and are received by the detector. The SPECT imaging system further includes a reconstructor configured to discard scatter photons and the second sub-set of photons traversing the septa, and iteratively reconstruct an image based on the first subset of photons that are directly received by the detector.

Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiments, the AIGS nanostructures have a photon conversion efficiency greater than 32% and an emission peak wavelength of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.

An apparatus for outputting a photon, the apparatus comprising an EM source arrangement for outputting phase modulated EM radiation; the phase modulated EM radiation comprising a set of one or more properties; the arrangement comprising at least one electromagnetic, EM, source for generating EM radiation at a plurality of different wavelengths; a modulator for receiving the EM radiation; phase modulating the received EM radiation; and outputting phase modulated EM radiation; an optical fibre for receiving the phase modulated EM radiation; converting, using a third order nonlinear susceptibility of the optical fibre, at least one photon of the phase modulated EM radiation into a first new photon; and a second new photon and outputting at least the first new photon, wherein the set of one or more properties comprises a wavelength of the phase modulated EM radiation and provides for the phase modulated EM radiation to propagate along the optical fibre with at least a positive value of a second order dispersion parameter; and a negative value of a fourth order dispersion parameter.

The present disclosure relates to a method for manufacturing a pixel that includes depositing an insulating layer on an exposed face of an interconnect structure of an integrated circuit, the interconnect structure having a conductive element flush with said exposed face; etching an opening passing through the insulating layer to the conductive element; depositing an electrode layer on and in contact with the conductive element and the insulating layer; performing chemical mechanical planarization up to the insulating layer, a portion of the electrode layer left in place in the opening forming an electrode; and depositing a film configured to convert photons into electron-hole pairs when a ray at an operating wavelength of the pixel reaches the pixel.

There is provided a photonics energy converter module (1010) for generating output power (Pout) by converting photons into electrical energy (Qout) from which the output power (Pout) is generated. The photonics energy converter module (1010) includes a laser (1015) and a waveguide photonics device (1020), wherein the laser (1015) is configured to provide photons to the waveguide photonics device (1020) in which the photons propagate in a coherent manner, wherein the waveguide photonics device (1020) includes a configuration of waveguides and electrodes that are configured to receive the photons, at least partially bifurcate the photons into their respective electrons and positrons, configure the at least partially bifurcated electrons and positrons so that they mutually accelerate to provided accelerated electrons and positrons, and harvest the accelerated electrons and positrons to generate the electrical energy (Qout) from which the output power (Pout) is generated.

The invention provides a wireless communication system for dynamic spectrum management, and the system comprises an IQ modulator which modulates a baseband signal to a first optical carrier; the first tunable carrier generation device is used for generating a tunable first tunable optical carrier based on the first optical carrier; the photon wireless conversion device is used for converting a beam-combined signal of the first tunable optical carrier and the modulated baseband signal to obtain a transmitting signal; the wireless photon conversion device is used for converting the transmitting signal and a second optical carrier to obtain a second optical signal; the second tunable carrier generation device is used for generating a tunable second tunable optical carrier based on the second optical carrier; the IQ demodulator is used for performing coherent mixing and photoelectric detection on the beam-combined signal of the second optical signal and the second tunable optical carrier to obtain a baseband signal; and the first tunable carrier generation device and the second tunable carrier generation device are integrated with hot electrodes. According to the invention, the radio frequency signal can be flexibly adjusted in a wide-spectrum manner, thereby realizing dynamic spectrum management.

The application discloses a system for rapidly identifying artificial radiation, and relates to the technical field of nuclear radiation protection. The system comprises an organic scintillator, a photomultiplier, a threshold comparison circuit and a processing module. The organic scintillator is used for absorbing gamma rays of a current environment and emitting photons when excited atoms and molecules are de-excited. The photomultiplier is used for converting the emitted photons into electric pulse signals. The threshold comparison circuit is used for comparing the amplified electric pulse signals with four voltage thresholds respectively through four comparators to obtain four count rates. The processing module is used for obtaining count rates between different voltage thresholds according to the four count rates, and obtaining corresponding weights according to the count rates between the different voltage thresholds. The absolute values of the differences between the multiple weights and a pulse radiation distribution characteristic factor in a natural background radiation environment are summed to obtain a summation result. Whether artificial radiation exists is determined according to the summation result. Through the multi-threshold pulse counting and weight distribution analysis method, whether an artificial radiation source exists can be rapidly judged within 100 ms.

Some embodiments in the present disclosure relate to a photon transduction device for transducing between microwave and optical frequencies including a superconducting element, and means for preventing optical frequency radiation from being absorbed by the superconducting element.

The application discloses a kind of cognitive radio spectrum sensing device and method based on quantum compressed sensing, belong to cognitive radio technical field.Aiming at the problems in prior art, by designing a kind of cognitive radio spectrum sensing device based on quantum compressed sensing, the device includes broadband antenna module, electro-optic modulation microwave photon conversion module, data acquisition module and cognitive radio signal detection algorithm module, each module is sequentially connected, and the whole process from signal reception to spectrum analysis is completed jointly;The present application utilizes quantum compressed sensing to realize sub-Nyquist sampling and high compression ratio broadband multi-frequency microwave signal spectrum measurement, while achieving a detection probability approaching 100% when the photon counting rate is increased to 2 Mcps and the integration time is 40 ms, providing a new strategy for cognitive radio spectrum sensing, decision-making and switching.

The compound as shown in the formula I has a proper energy level as a short-wave infrared micromolecule non-fullerene receptor, can be matched with a polymer donor material with high performance and matched energy level, and lays a foundation for developing an efficient photoelectric detector. The short-wave infrared photoelectric detector prepared by the invention has excellent light responsivity and specific detection rate, and the light responsivity and the specific detection rate are far better than those of short-wave infrared photoelectric detectors reported in literatures. According to the up-conversion device, the high-performance short-wave infrared photoelectric detector and the organic light emitting diode are integrated, the up-conversion device with high photon-photon conversion efficiency is prepared, and high-quality short-wave infrared imaging is achieved. The device disclosed by the invention realizes short-wave infrared response, high up-conversion efficiency and good imaging display.

This disclosure proposes a signal detection device to reduce the impact of interference propagation noise inside and outside the signal detection device and improve signal detection accuracy. The device includes: a detector comprising a photoelectric conversion element that converts photons (the object to be detected) into a current signal and a current / voltage converter that converts the current signal into a voltage signal; a transmission unit that transmits the voltage signal; and a data collection unit that detects and collects the transmitted voltage signal. Here, the detector is disposed inside a first shielded housing connected to the rack ground. The current / voltage converter includes a differential amplifier having first and second input terminals. The first input terminal is connected to the first output terminal of the photoelectric conversion element via a first input resistor, and the second input terminal is connected to the second output terminal of the photoelectric conversion element and the ground via a second input resistor having a resistance value larger than the first input resistor. Furthermore, the first and second output terminals of the current / voltage converter are connected to the data collection unit via a cable transmission unit. The cable transmission unit, along with the current / voltage converter and the data collection unit, is connected to the ground (see Figure 1).

A SPECT imaging system includes a detector unit configured to receive photons emitted by a radiopharmaceutical and to convert the photons into projection data. The radiopharmaceutical emits radiation in a high energy radiation range and a low energy radiation range of interest, and the detector unit can simultaneously detect radiation in the high energy radiation range and the low energy radiation range. The SPECT imaging system further comprises a high-energy radiation collimator which is located between the detector unit and photons emitted by the radiopharmaceutical. The high-energy radiation collimator is configured to allow high-energy radiation of interest to penetrate its bulkhead without reducing the spatial resolution of low-energy radiation of interest. The SPECT imaging system further comprises a reconstructor for reconstructing a first image from the projection data of the high-energy radiation of interest and reconstructing a second image from the projection data of the low-energy radiation of interest.

The present invention provides a non-suspended quantum transducer device for coherent conversion of photons in the microwave communication band. The transducer body is divided into two parts: a piezoelectric mechanical cavity and a photoacoustic crystal microcavity. Assisted by an optical waveguide and an electrode system, it uses a mechanical oscillator as an intermediary to complete the bidirectional conversion of microwave signals of solid-state quantum bits and photons in the communication band. The piezoelectric mechanical cavity uses lithium niobate material to convert microwave signals into mechanical vibrations through the piezoelectric effect. The mechanical vibrations are transmitted to the defect region of the photoacoustic crystal microcavity through the phonon waveguide and couple with the photons in the communication band. The present invention innovatively adopts a non-suspended structure. Through structural design, while ensuring low mechanical loss, it greatly improves the stability and heat dissipation capacity of the transducer. This device is suitable for microwave and photon signal conversion in the fields of quantum computing, quantum communication, etc., and is of great significance to the development of technologies such as long-distance transmission of quantum information and integrated quantum computers.