14 results about "Quantum optics" patented technology

A device, method, and hybrid computing architecture for a Symbolic Photonic Logic Gate (SPLG) system that performs data processing primarily in the optical domain. The system comprises a photonic substrate, including silicon-photonics, indium phosphide, or similar optically active materials, patterned with optical waveguides and interferometric structures configured to implement logic operations through controlled optical interference, phase modulation, or non-linear optical effects. The SPLG system is configured to execute Boolean and symbolic logic functions without requiring intermediate optical-to-electrical signal conversion. In operation, information is encoded into one or more optical parameters including phase, polarization, wavelength, or amplitude, and processed within a Symbolic Optical Core optimized for linear algebraic operations such as matrix multiplication and vector transformation. The architecture further comprises an electronic control layer configured to initialize, configure, and monitor the photonic logic elements while allowing the majority of computational operations to occur within the optical domain, thereby reducing electrical interconnect congestion and resistive heating relative to fully electronic processors.

This application provides a quantum optical microcavity device modified with fluorinated organophosphonic acid and its fabrication method, relating to the fields of organic chemistry and optical engineering. The quantum optical microcavity device includes a microcavity body and a fluorinated organophosphonic acid monolayer attached to the surface of the microcavity body. A hydrophobic fluorinated organophosphonic acid monolayer is formed on the surface of the microcavity body through a chemical reaction between a mixed solution containing fluorinated organophosphonic acid molecules and the surface of the microcavity body. Since the active head groups of the fluorinated organophosphonic acid can form chemical bonds with –OH and Si–O–Si on the surface of silica through reaction, the adsorption of water molecules from the air onto the –OH and Si–O–Si on the surface of the silica microcavity body can be effectively suppressed, thus improving the Q-value stability of the whispering-gallery mode quantum optical microcavity device.

Systems and methods for detecting attacks on optical communication channels are presented. Techniques can include transmitting, from a sender to a receiver and through an optical communication channel, an optical signal, where the optical signal includes a classical optical signal representing first information and a quantum optical signal representing second information. Techniques can include detecting, by the receiver, third information from at least a portion of the quantum optical signal, and transmitting, by the receiver to the sender, the third information. Techniques can include determining, by the sender, an indication of an attack on the optical communication channel based on the second information and at least a portion of the third information. Techniques can include triggering an alarm based on the determination.

The invention relates to a receiving apparatus (RX) in a quantum optical communication system (1).

This invention discloses a multimodal photothermal imaging method and system based on quantum correlation enhancement, belonging to the field of quantum optical imaging technology. The system includes a data acquisition and control system, a quantum light source fabrication module, a tunable pump light module, and a photothermal microscopy imaging module. This invention uses a quantum-correlated probe beam and a conjugate beam as the probe light for the photothermal effect, and a modulated light source with a wavelength tunable within the electromagnetic spectrum as the pump beam for photothermal excitation. By balancing the photothermal modulation in the zero-beat detection intensity difference, it overcomes the shot noise limit of traditional photothermal microscopy, achieving detection sensitivity exceeding the standard quantum limit, significantly reducing optical damage, and improving imaging speed. This invention has a wide spectral applicability and strong compatibility, and can be immediately integrated into various photothermal microscopy platforms for label-free imaging of biological samples and high-precision characterization of nanomaterials.

This invention provides a method, apparatus, device, and readable storage medium for generating a waveguide single-photon source, relating to the field of quantum optics. The method includes coupling a fundamental frequency light output from a laser into free space to form a spatial beam; adjusting the polarization state of the collimated spatial beam to match its polarization direction with the crystal axis of a fully encapsulated waveguide device; coupling the polarization-adjusted spatial beam into a polarization-maintaining transmission fiber to form fiber-optic transmission light; injecting the fiber-optic transmission light into the fully encapsulated waveguide device, and converting the fundamental frequency light into frequency-doubled light at a quasi-phase-matching operating temperature; outputting the frequency-doubled light from the fully encapsulated waveguide device and coupling it again into free space to form an output beam; and performing spatial spectral filtering and intensity attenuation on the output beam to reduce the average photon number per pulse to the single-photon level, obtaining a purified single-photon signal. This invention addresses the polarization matching problem between existing waveguide devices and fiber optic transmission links.

The application discloses a device and method for improving the stability of a vacuum squeezed light field generator, and relates to the technical field of quantum optics. First, the cavity length of the vacuum squeezed light field generator is closed-loop locked by reflecting pump light. Then, seed light is resonated with the vacuum squeezed light field generator, and the power and spot mode of the seed light and local light are coupled and interfered after matching. The phase is adjusted to constructive interference, and an interference signal and its frequency spectrum are collected by using a Fourier real-time analysis oscilloscope to identify additional noise. Finally, noise is suppressed by combining air floating platform pressure optimization and negative feedback servo control system parameter adjustment, so that the stability of the vacuum squeezed light field generator is improved. The application can effectively improve the stability of the vacuum squeezed light field generator, and is widely applied to experimental systems for vacuum squeezed light field preparation.

Methodology of generation, with the use of a degenerate four-wave mixing nonlinear process, of ultrafast synthesized quantum light pulses with attosecond resolution (as demonstrated - at petaHertz and sub-petaHertz frequencies) and that exhibit amplitude squeezing. Demonstration of controllability and tunability of quantum uncertainty of light in real time via switching between amplitude and phase squeezing. Example of an attosecond quantum encryption protocol leveraging squeezed synthesized light for secure digital communication at petahertz-speeds.

The embodiment of the application provides a kind of multi-device spectrum alignment method, system, equipment and storage medium, belong to quantum optics technical field.The method comprises: obtaining the output spectrum data of each device, and the resonant parameter data sequence corresponding to each device is constructed, to form multi-device resonant parameter database;Cross-device spectrum reference model is constructed, and the spectral deviation amount corresponding to each device is calculated;Based on the spectral deviation amount of each device, the inter-device spectral consistency coupling relationship is constructed, and the collaborative control quantity corresponding to each device is generated;Spectrum adjustment control is carried out to the corresponding device, and the output spectrum data is updated to recalculate the spectral deviation amount in the adjustment process, until the preset spectral consistency condition is satisfied, and the aligned multi-device spectrum result is output.The application scheme realizes adaptive closed-loop adjustment based on group coupling constraint in the case of non-synchronous drift of multi-device spectrum, so as to stably obtain consistent and aligned multi-device spectrum output.

This invention relates to the field of quantum optical diode technology, and more particularly to a method for preparing a high-efficiency and stable blue perovskite quantum dot light-emitting diode (LED). The method includes mixing a ligand solution with an initial ligand concentration, a precursor solution with a preset concentration, and a dispersion solvent; adjusting the stirring time in response to a half-width at half-maximum (HWHM) value determined from the fluorescence emission spectrum data being greater than a preset HWHM value; and determining that the LED preparation is complete according to subsequent preparation processes based on a second yield value of the fluorescence quantum dots determined from the fluorescence emission spectrum data being less than a preset second yield value, and a dynamic evaluation standard being greater than a preset evaluation standard. This invention enables a comprehensive assessment of the quality of the prepared blue perovskite quantum dots even when the blue perovskite quantum dot yield is not as expected, resulting in insufficient luminous intensity. This ensures that the LED meets quantum optical performance requirements while fully utilizing the blue perovskite quantum dots.

The application discloses a kind of preparation system and method of Rydberg state based on orthogonal polarization detection and dual-wavelength in-room frequency stabilization, belong to quantum optics and precise measurement field.System includes: atomic gas chamber, first / second wavelength laser, modulation transfer spectrum frequency stabilization unit, dual-wavelength in-room coupling unit, orthogonal polarization detection unit and servo feedback control system.Method by modulation transfer spectrum locking probe light frequency;By dual-wavelength in-room coupling, modulation information is transferred to coupling light across wavelength;By orthogonal polarization detection, the polarization state change caused by the interaction of coupling light and atom resonance is extracted, error signal is generated and coupling light frequency is locked.The core of the application is: only resonance atom causes coupling light field polarization state rotation, non-resonant atom has no contribution;By polarimeter to the polarization component of outgoing light screening, only extract the polarization rotation signal produced by resonance atom, effectively suppress the high DC background noise of laser itself, greatly improve signal purity and signal-to-noise ratio.

The application belongs to the technical field of single photon emitters, and relates to a radiation enhancement type single photon emitter and a preparation method, which comprise an hBN thin layer and an emitter; the emitter is arranged above the hBN thin layer, and the emitter is located within a range of 10 nm above the surface of the hBN thin layer. By utilizing the hyperbolic dispersion characteristics of the hBN thin layer, Purcell enhancement and enhancement of photon coupling output power can be realized in a wide band range. The problems of low photon coupling output efficiency and Purcell effect enhancement in the existing single photon emitter are solved. Therefore, the application range of the single photon emitter in photonics and quantum optics is expanded. Compared with the existing single photon emitter, the application has a simple structure, does not need a complex manufacturing process, and reduces manufacturing cost.

Provided is a measurement method using a quantum optical system configured to cause quantum interference between a plurality of physical processes in which quantum entangled photon pairs of signal photons and idler photons are generated, the method comprising executing object part quantum measurement for acquiring a quantum interference signal for a measurement object part included in a sample and having unknown reflectance at the wavelength of the idler photons, and calculating the reflectance of the measurement object part from the quantum interference signal acquired by the object part quantum measurement, the object part quantum measurement including sweeping the optical path length difference between the optical path length of the signal photons and the optical path length of the idler photons by adjusting the optical path length of the signal photons, or the optical path length of the idler photons when the idler photons are reflected by the measurement object part.