公开(公告)号：US11989620B2

公开(公告)日：2024-05-21

申请号：US17034050

申请日：2020-09-28

Applicant: Xanadu Quantum Technologies Inc.

Inventor： Ish Dhand ,  Haoyu Qi ,  Leonhard Neuhaus ,  Lukas Helt ,  Kamil Bradler ,  Zachary Vernon ,  Shreya Prasanna Kumar

IPC: G06E3/00 ,  G06F17/14 ,  G06N3/126 ,  G06N10/00 ,  G06F17/11

CPC classification number: G06N10/00 ,  G06E3/008 ,  G06F17/14 ,  G06N3/126 ,  G06F17/11

Abstract: A method includes calculating a plurality of permutation matrices of an input matrix that characterizes a linear transformation of a plurality of input states. The method also includes determining a plurality of settings of an optical circuit based on the plurality of permutation matrices. Each setting in the plurality of settings is associated with an electric power, from a plurality of electric powers, consumed by the optical circuit. The method also includes determining a selected setting of the optical circuit based on the electric power from the plurality of electric powers and consumed by the optical circuit at each setting from the plurality of settings associated with the electric power. The method further includes implementing the selected setting on the optical circuit to perform the linear transformation of the plurality of input states.

公开(公告)号：US11454862B2

公开(公告)日：2022-09-27

申请号：US16719028

申请日：2019-12-18

Applicant: Xanadu Quantum Technologies Inc.

Inventor： Kamil Bradler ,  Daiqin Su ,  Zachary Vernon ,  Lukas Helt ,  Ish Dhand

IPC: G06E3/00 ,  G02B6/293 ,  G02B6/12 ,  G02F3/00 ,  G06N10/00

Abstract: An apparatus includes a plurality of interconnected reconfigurable beam splitters and a plurality of phase shifters collectively configured to define a network of optical devices. The network of optical devices is configured to perform a universal transformation on a plurality of input optical signals via a triangular architecture. The apparatus also includes a first delay line optically coupled to the network of optical devices and configured to send at least one output optical signal from a plurality of output optical signals of the network of optical devices to interact with at least one input optical signal in the plurality of input optical signals within the network of optical devices.

公开(公告)号：US11972323B2

公开(公告)日：2024-04-30

申请号：US18102402

申请日：2023-01-27

Applicant: Xanadu Quantum Technologies Inc.

Inventor： Kamil Bradler ,  Daiqin Su ,  Nathan Killoran ,  Maria Schuld ,  Zachary Vernon ,  Lukas Helt ,  Blair Morrison ,  Dylan Mahler

IPC: G06N10/00

CPC classification number: G06N10/00

Abstract: An apparatus includes a light source to provide a plurality of input optical modes in a squeezed state. The apparatus also includes a network of interconnected reconfigurable beam splitters (RBSs) configured to perform a unitary transformation of the plurality of input optical modes to generate a plurality of output optical modes. An array of photon counting detectors is in optical communication with the network of interconnected RBSs and configured to measure the number of photons in each mode of the plurality of the output optical modes after the unitary transformation. The apparatus also includes a controller operatively coupled to the light source and the network of interconnected RBSs. The controller is configured to control at least one of the squeezing factor of the squeezed state of light, the angle of the unitary transformation, or the phase of the unitary transformation.

公开(公告)号：US11593699B2

公开(公告)日：2023-02-28

申请号：US17512086

申请日：2021-10-27

Applicant: Xanadu Quantum Technologies Inc.

Inventor： Kamil Bradler ,  Daiqin Su ,  Nathan Killoran ,  Maria Schuld ,  Zachary Vernon ,  Lukas Helt ,  Blair Morrison ,  Dylan Mahler

IPC: G06N10/00

Abstract: An apparatus includes a light source to provide a plurality of input optical modes in a squeezed state. The apparatus also includes a network of interconnected reconfigurable beam splitters (RBSs) configured to perform a unitary transformation of the plurality of input optical modes to generate a plurality of output optical modes. An array of photon counting detectors is in optical communication with the network of interconnected RBSs and configured to measure the number of photons in each mode of the plurality of the output optical modes after the unitary transformation. The apparatus also includes a controller operatively coupled to the light source and the network of interconnected RBSs. The controller is configured to control at least one of the squeezing factor of the squeezed state of light, the angle of the unitary transformation, or the phase of the unitary transformation.

公开(公告)号：US20240214078A1

公开(公告)日：2024-06-27

申请号：US18538154

申请日：2023-12-13

Applicant: Xanadu Quantum Technologies Inc.

Inventor： Yanbing Zhang ,  Jannat Hundal ,  Leonhard Neuhaus ,  Lukas Helt

IPC: H04B10/70 ,  G01J1/42 ,  G06N10/60 ,  H04Q11/00

CPC classification number: H04B10/70 ,  G01J1/42 ,  G06N10/60 ,  H04Q11/0062 ,  G01J2001/442

Abstract: Systems, methods and computer program products for real-time routing of optical signals. A signal trace is received by a signal processor from a photon-number resolving detector. The signal trace is produced by the photon-number resolving detector in response to an optical pulse from a light source (e.g. a pulsed laser). The signal processor determines the photon number of the optical pulse by applying a function to the signal trace and one or more reference traces. A feedback signal is then defined based on the photon number of the optical pulse. The feedback signal is used to control the operation of a switch positioned in the path of a related optical signal. The switch operates to define the forward routing path of the related optical signal.

公开(公告)号：US11747132B2

公开(公告)日：2023-09-05

申请号：US17554711

申请日：2021-12-17

Applicant: Xanadu Quantum Technologies Inc.

Inventor： Ish Dhand ,  Shreya Prasanna Kumar ,  Dylan Mahler ,  Blair Morrison ,  Lukas Helt ,  Leonhard Neuhaus

IPC: G01B9/02015 ,  G01B9/02

CPC classification number: G01B9/02015 ,  G01B9/02051

Abstract: A method includes receiving a representation of an N-mode interferometer and a representation of at least one imperfection associated with the N-mode interferometer at a processor, N being a positive integer value. The processor identifies multiple two-mode interferometers and multiple phases based on the representation of the N-mode interferometer and the representation of the at least one imperfection. The multiple two-mode interferometers and the multiple phases are configured to apply a unitary transformation to an input signal. The method also includes sending a signal to cause at least one of storage or display of a representation of the multiple two-mode interferometers and a representation of the multiple phases.