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    NETWORK OPTIMIZATION FOR HYBRID QUANTUM-CLASSICAL NETWORKS
    1.
    发明申请
    NETWORK OPTIMIZATION FOR HYBRID QUANTUM-CLASSICAL NETWORKS 有权

    公开(公告)号：US20250071020A1

    公开(公告)日：2025-02-27

    申请号：US18943740

    申请日：2024-11-11

    Applicant: AT&T Intellectual Property I, L.P. ,  AT&T Mobility II LLC

    Inventor： Mark K. Stockert ,  Thomas J. Routt

    IPC: H04L41/0816 ,  G06N10/40 ,  H04B10/70

    Abstract: A method performed by a processing system including at least one processor includes calculating a quantum network relative performance metric for a current configuration of a hybrid quantum-classical telecommunications network, identifying a proposed new configuration for the hybrid quantum-classical telecommunications network, calculating the quantum network relative performance metric for the proposed new configuration of the hybrid quantum-classical telecommunications network, and implementing the proposed new configuration in the hybrid quantum-classical telecommunications network when the quantum network relative performance metric for the proposed new the hybrid quantum-classical telecommunications network is greater than the quantum network relative performance metric for the current configuration of the hybrid quantum-classical telecommunications network.

    SYSTEM AND METHOD OF CALIBRATING AND TESTING A QKD TRANSMITTER
    2.
    发明申请
    SYSTEM AND METHOD OF CALIBRATING AND TESTING A QKD TRANSMITTER 有权

    公开(公告)号：US20250062836A1

    公开(公告)日：2025-02-20

    申请号：US18725923

    申请日：2023-01-05

    Applicant: HEQA SECURITY LTD

    Inventor： Nitzan LIVNEH ,  Hagai Shmuel EISENBERG ,  Yehuda PILNYAK

    IPC: H04B10/70 ,  H04B10/516

    Abstract: Some embodiments relate to a QKD transmitter configured to generate a plurality of pulse signals, wherein voltage polarity of at least one of the plurality of pulse signals is opposite to a voltage polarity of at least another one of said plurality of pulse signals, combine the plurality of pulse signals and generate therefrom a light-modulating signal, modulate light signals by the light-modulating signal, measure the modulated light signals and generate measurement data indicative thereof, and adjust at least one of amplitude and delay time of at least some of the plurality of pulse signals for transmission of a desired quantum communication state.

    Quantum tomography and photon source optimization
    4.
    发明授权
    Quantum tomography and photon source optimization 有权

    公开(公告)号：US12199683B2

    公开(公告)日：2025-01-14

    申请号：US18080986

    申请日：2022-12-14

    Applicant: Psiquantum, Corp.

    Inventor： Albert Wang

    IPC: G06N10/00 ,  H04B10/70

    Abstract: A quantum computing system includes a photon processing system, a photon analyzer, and a photon source module coupled to the photon processing system and to the photon analyzer. The photon source module includes at least one photon source configured to discharge one or more photons per trigger signal and a photon multiplexer configured to direct the one or more photons to the photon processing system or to the photon analyzer.

    Quantum network devices, systems, and methods
    6.
    发明授权
    Quantum network devices, systems, and methods 有权

    公开(公告)号：US12184769B2

    公开(公告)日：2024-12-31

    申请号：US18243799

    申请日：2023-09-08

    Applicant: THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK ,  QUNNECT, INC.

    Inventor： Eden Figueroa ,  Mehdi Namazi ,  Mael Flament ,  Sonali Gera

    IPC: H04L9/08 ,  G01B9/02017 ,  H04B10/70

    Abstract: Quantum network devices, systems, and methods are provided to enable long-distance transmission of quantum bits (qubits) for applications such as Quantum Key Distribution (QKD), entanglement distribution, and other quantum communication applications. Such systems and methods provide for separately storing first, second, third, and fourth photons, wherein the first and second photons and the third and fourth photons are respective first and second entangled photon pairs, triggering a synchronized retrieval of the stored first, second, third, and fourth photons such that the first photon is propagated to a first node, the second and third photons are propagated to a second node, and the fourth photon is propagated to a third node, and creating a new entangled pair comprising the first and fourth photons at the first and third nodes to transmit quantum information.

    Generation Of Entangled Photonic States
    7.
    发明申请
    Generation Of Entangled Photonic States 有权

    公开(公告)号：US20240412087A1

    公开(公告)日：2024-12-12

    申请号：US18812770

    申请日：2024-08-22

    Applicant: PsiQuantum Corp.

    Inventor： Mercedes Gimeno-Segovia

    IPC: G06N10/00 ,  H04B10/70

    Abstract: A device includes photon detectors, first photonic modes (coupled with photons sources) for outputting a first set of four photons, second photonic modes to provide a second set of at least four photons to the photon detectors, third photonic modes (coupled with the photon sources) to provide a third set of at least photons to the photon detectors, first couplers coupling modes in the first set of photonic modes to modes in the second set of photonic modes, and second couplers coupling modes of the third set of photonic modes to modes of the second set of photonic modes. The first and second couplers are configured to cause the first photonic modes to output, with a first non-zero probability, a pair of photons in a Bell state when a first number of photons is provided to respective inputs of the first photonic modes and the third photonic modes.

    Entangled Quantum State Receiver
    8.
    发明申请
    Entangled Quantum State Receiver 有权

    公开(公告)号：US20240405886A1

    公开(公告)日：2024-12-05

    申请号：US17869737

    申请日：2022-07-20

    Applicant: Qubit Moving and Storage, LLC

    Inventor： Gary Vacon ,  Kristin A. Rauschenbach

    IPC: H04B10/70 ,  G06N10/40

    Abstract: An entangled quantum state receiver includes an optical detector that generates an electrical signal having a signal characteristic in response to detection of a single photon. A first electrical circuit generates an electrical signal having a predetermined duration at an output when the signal characteristic is present. A clock generates a clock with a period, wherein the predetermined duration is greater than the period. A second electrical circuit generates and stores a state or a time in a memory location, where the state has a first state value when the electrical signal having the predetermined duration is present during a clock cycle and has a second state value when the electrical signal having the predetermined duration is not present during the clock cycle. A processor determines received entangled state information from the state value stored in the memory location or from time stored in the memory location.

    FREQUENCY-SPLAYED MULTI-CHANNEL SYSTEM AND METHODS FOR USE THEREOF
    10.
    发明申请
    FREQUENCY-SPLAYED MULTI-CHANNEL SYSTEM AND METHODS FOR USE THEREOF 有权

    公开(公告)号：US20240388368A1

    公开(公告)日：2024-11-21

    申请号：US18656762

    申请日：2024-05-07

    Applicant: Quantinuum LLC

    Inventor： Bruce Gregory Tiemann ,  Julia Rose Kahn CLINE

    IPC: H04B10/70 ,  H04B10/564

    Abstract: A system comprises a plurality of voltage signal sources and a controller configured to control operation of the voltage signal sources to cause them to generate respective voltage signals characterized by respective frequencies. The plurality of voltage signal sources includes a first voltage signal source adjacent a second voltage signal source and a third voltage signal source adjacent to the second voltage signal source such that the second voltage signal source is physically disposed between the first voltage signal source and the third voltage signal source. The controller causes the first voltage signal source to generate a first voltage signal characterized by a first frequency, the second voltage signal source to generate a second voltage signal characterized by a second frequency, and the third voltage signal source to generate a third voltage signal characterized by a third frequency. The first and third frequencies are different from the second frequency.

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