12 results about "Quantum interference" patented technology

This application discloses a flexible power distribution network AC / DC hybrid control device and method empowered by quantum precision measurement. The device includes an AC / DC hybrid quantum interference measurement module, a quantum measurement control closed-loop linkage module, an adaptive quantum entanglement anti-interference shielding module, and a quantum classical collaborative backup control module. The method includes the following steps: S1, synchronously and precisely measuring the real-time magnetic field signals on the AC and DC sides of the AC / DC hybrid system; S2, amplifying the weak signals in the real-time magnetic field signals; S3, actively canceling external electromagnetic interference through the adaptive quantum entanglement anti-interference shielding module; S4, using the real-time magnetic field signals to solve the optimal power balance solution through the QUBO objective function and variational parameter optimization formula, and monitoring the state of the AC / DC hybrid system in real time, in order to solve the problems of large control delay, weak anti-interference capability, disconnect between measurement and control, and inability to adapt to dynamic topology changes in existing technologies.

The application discloses a soil sampling multi-objective optimization method based on a quantum annealing algorithm, which realizes efficient simplification of an original sampling point set on the premise of maximum reservation of pollution risk characteristics by constructing a comprehensive multi-objective evaluation function. The method innovatively integrates quantum tunneling, multi-state superposition, quantum interference and other quantum computing characteristics, and comprehensively considers four key indexes, i.e. spatial distribution similarity, three-dimensional volume overlap, pollution risk consistency and heavy metal migration mode consistency. The method guarantees sampling accuracy while significantly reducing cost, and provides an efficient and economical integrated solution for three-dimensional visualization of pollutants.

The application discloses a method for unmanned aerial vehicle cluster to cooperatively detect interference areas and locate the center, which comprises the following steps: activating the airborne quantum-enhanced inertial navigation system to obtain absolute position without drift when the navigation is disturbed; combining the multi-sensor fusion measurement value and the initial credibility evaluated dynamically to encode into a logic quantum bit parameter; constructing a multi-bit global quantum superposition state at the fusion center, executing a quantum consensus algorithm containing a dynamic oracle operator, and using quantum interference to quickly amplify the probability amplitude of the honest node group; measuring the ground state after the wave function collapses to accurately strip the Byzantine malicious nodes; finally, extracting a pure high-trust data set and iteratively locating the interference center based on the particle filtering algorithm. The application breaks away from the dependence on external navigation, improves the computing efficiency of anti-malicious fraud and the positioning robustness in complex nonlinear environments.

A non-linear superconducting quantum circuit comprising at least one resonant portion and an asymmetrical threaded superconducting quantum interference device connected to said at least one resonant portion galvanically, said non-linear superconducting circuit having a first mode with a first resonant frequency and a second mode with a second resonant frequency, the ratio between said first resonant frequency and said second resonant frequency being different from ½, said at least one resonant portion being configured with inductance and capacitance values of its symbolic representation which induce with said asymmetrical threaded superconducting quantum interference device said first mode and said second mode such that, said non-linear superconducting quantum circuit has zero-point fluctuations of the superconducting phase across the asymmetrical threaded superconducting quantum interference device for the first mode and the second mode which are superior or equal to 0.05 rad.

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.

A bipolar single flux quantum weight circuit includes a superconducting weight storage loop incorporating a weight storage inductor for storing a weight current. It features a first superconducting quantum interference device mutually coupled to the loop with a first polarity, and a second superconducting quantum interference device mutually coupled with an opposite second polarity, their inductances varying based on the weight current. A first inductive divider, receiving an input signal, directs current through the first SQUID or a first coupling inductor. A second inductive divider similarly directs the input signal through the second SQUID or a second coupling inductor. A soma element includes a soma inductor line where the first coupling inductor induces a signal with a third polarity and the second coupling inductor induces a signal with an opposite fourth polarity. The soma element also includes a soma output Josephson junction connected to the inductor line for thresholding.

This application relates to the field of terahertz wave generation and polarization control technology, specifically providing a method for generating tunable ellipsometric terahertz waves by exciting upright graphene with a dual-beam setup. The method includes steps 1, generating a first laser beam and a second laser beam, where the wavelength of the first laser beam is twice the wavelength of the second laser beam; steps 2, irradiating the surface of the upright graphene with the first and second laser beams; and steps 3, generating terahertz waves on the back side of the upright graphene. The ellipticity of the terahertz wave is controlled by changing the relative polarization angle between the first and second laser beams. The dual-color light field of this application generates a quantum interference effect, forming a strong coherent injection current. The abundant edge states of the upright graphene further increase the coherent injection current, improving the stability of the terahertz signal. By changing the relative polarization angle between the two laser beams, the proportion of the coherent injection current components in different directions can be adjusted, achieving continuous control of the ellipticity of the terahertz wave.

A diagnostic apparatus includes a first array of superconducting quantum interference devices (SQUIDs). Each SQUID of the first array is configured to be coupled respectively to a test circuit of a second array of test circuits such that an electronic noise present in the test circuit induces a first current that flows through the SQUID. The diagnostic apparatus also includes a current source configured to provide a second current for each SQUID of the first array such that the second current flows through the SQUID. Each SQUID of the first array is configured to generate an output in a form of: a first voltage in response to a sum of the first current and the second current being less than a threshold current, and a second voltage in response to the sum of the first current and the second current being greater than the threshold current.

This application discloses a multi-node network signal synchronization device based on quantum interference, comprising: an optical frequency comb generation module, a filtering module, and an adjustment module deployed locally at each node, and an interference module deployed outside the nodes; the optical frequency comb generation modules of any two nodes performing signal synchronization are used to generate independent optical frequency combs locally at each node, wherein the optical frequency combs achieve frequency alignment by locking the pump laser frequency with the repetition frequency of the optical frequency comb; the filtering module is used to filter out the same-frequency comb teeth assigned to any two nodes from their respective optical frequency combs; the interference module is used to perform beam interference on the same-frequency comb teeth of any two nodes and send the relative time deviation between the optical signals of any two nodes to the adjustment module of the target node among the two nodes; the adjustment module is used to adjust according to the relative time deviation. This application solves the problems of single point of failure and poor network topology flexibility in star network architecture.