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公开(公告)号：US11550108B1
公开(公告)日：2023-01-10
申请号：US17378533
申请日：2021-07-16
Applicant: Psiquantum, Corp.
Inventor： Gabriel J. Mendoza , Matteo Staffaroni , Albert Wang , John Eugene Berg , Ramakanth Alapati
IPC: G02B6/43 , H01L25/065 , G02B6/12 , H01L23/00 , G06N10/00
Abstract: Techniques disclosed herein relate to devices that each include one or more photonic integrated circuits and/or one or more electronic integrated circuits. In one embodiment, a device includes a silicon substrate, a die stack bonded (e.g., fusion-bonded) on the silicon substrate, and a printed circuit board (PCB) bonded on the silicon substrate, where the PCB is electrically coupled to the die stack. The die stack includes a photonic integrated circuit (PIC) that includes a photonic integrated circuit, and an electronic integrated circuit (EIC) die that includes an electronic integrated circuit, where the EIC die and the PIC die are bonded face-to-face (e.g., by fusion bonding or hybrid bonding) such that the photonic integrated circuit and the electronic integrated circuit face each other. In some embodiments, the device also includes a plurality of optical fibers coupled to the photonic integrated circuit.
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公开(公告)号：US11531248B2
公开(公告)日：2022-12-20
申请号：US17305024
申请日：2021-06-29
Applicant: Psiquantum, Corp.
Inventor： Hugo Cable
Abstract: Circuits and methods that implement multiplexing for photons propagating in waveguides are disclosed, in which an input photon received on a selected one of a set of input waveguides can be selectably routed to one of a set of output waveguides. The output waveguide can be selected on a rotating or cyclic basis, in a fixed order, and the input waveguide can be selected based at least in part on which one(s) of a set of input waveguides is (are) currently propagating a photon.
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103.发明授权公开(公告)号：US11493713B1
公开(公告)日：2022-11-08
申请号：US16576626
申请日：2019-09-19
Applicant: Psiquantum, Corp.
Inventor： Gabriel J. Mendoza , Matteo Staffaroni , Albert Wang , John Eugene Berg , Ramakanth Alapati
IPC: G02B6/43 , H01L25/065 , G02B6/12 , G06N10/00 , H01L23/00
Abstract: Techniques disclosed herein relate to devices that each include one or more photonic integrated circuits and/or one or more electronic integrated circuits. In one embodiment, a device includes a silicon substrate, a die stack bonded (e.g., fusion-bonded) on the silicon substrate, and a printed circuit board (PCB) bonded on the silicon substrate, where the PCB is electrically coupled to the die stack. The die stack includes a photonic integrated circuit (PIC) that includes a photonic integrated circuit, and an electronic integrated circuit (EIC) die that includes an electronic integrated circuit, where the EIC die and the PIC die are bonded face-to-face (e.g., by fusion bonding or hybrid bonding) such that the photonic integrated circuit and the electronic integrated circuit face each other. In some embodiments, the device also includes a plurality of optical fibers coupled to the photonic integrated circuit.
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公开(公告)号：US11493687B1
公开(公告)日：2022-11-08
申请号：US16920055
申请日：2020-07-02
Applicant: Psiquantum, Corp.
Inventor： Eric Dudley
Abstract: Techniques disclosed herein relate generally to photonic integrated circuits working at cryogenic temperatures. In one example, a device includes a substrate, a dielectric layer on the substrate, an optical waveguide in the dielectric layer, a superconducting circuit in the dielectric layer and coupled to the optical waveguide, and a micro-channel in the dielectric layer and adjacent to the superconducting circuit. The micro-channel is aligned with the superconducting circuit and is configured to conduct a liquid at a cryogenic temperature to locally cool the superconducting circuit.
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公开(公告)号：US20220237494A1
公开(公告)日：2022-07-28
申请号：US17722847
申请日：2022-04-18
Applicant: PsiQuantum, Corp.
Inventor： Mihir Pant , Naomi Nickerson , Hector Bombin Palomo
Abstract: A quantum computing system and methods for performing fusion based quantum computing on encoded qubits. A fusion controller sequentially performs a series of fusion measurements on respective photonic quantum modes of first and second encoded qubits to obtain a respective series of classical measurement results. For respective fusion measurements of the series of fusion measurements, a basis for performing the respective fusion measurement is selected based on classical measurement results of previous fusion measurements. An encoded fusion measurement result is determined based on the classical measurement results, and the encoded fusion measurement result is stored in a memory medium.
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Patent Agency Ranking
公开(公告)号：US20220214214A1
公开(公告)日：2022-07-07
申请号：US17705204
申请日：2022-03-25
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Eric Dudley , Mark Thompson
Abstract: A method of resolving a number of photons received by a photon detector includes optically coupling a waveguide to a superconducting wire having alternating narrow and wide portions; electrically coupling the superconducting wire to a current source; and electrically coupling an electrical contact in parallel with the superconducting wire. The electrical contact has a resistance less than a resistance of the superconducting wire while at least one narrow portion of the superconducting wire is in a non-superconducting state. The method includes providing to the superconducting wire, from the current source, a current configured to maintain the superconducting wire in a superconducting state in the absence of incident photons; receiving one or more photons via the waveguide; measuring an electrical property of the superconducting wire, proportional to a number of photons incident on the superconducting wire; and determining the number of received photons based on the electrical property.
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公开(公告)号：US11362664B2
公开(公告)日：2022-06-14
申请号：US17135861
申请日：2020-12-28
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Qiaodan Jin Stone
IPC: H03K19/195 , G01J1/44 , H01L39/10 , H01L39/16
Abstract: A programmable circuit includes a superconducting component arranged in a multi-dimensional array of alternating narrow and wide portions. The programmable circuit further includes a plurality of heat sources, each heat source configured to selectively provide heat to a respective narrow portion sufficient to transition the respective narrow portion from a superconducting state to a non-superconducting state. The programmable circuit further includes a plurality of electrical terminals, each electrical terminal coupled to a respective wide portion of the multi-dimensional array.
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公开(公告)号：US20220172096A1
公开(公告)日：2022-06-02
申请号：US17276094
申请日：2019-09-13
Applicant: Psiquantum, Corp.
Inventor： Terence Rudolph
Abstract: A multirail-encoded qubit can be implemented using a quantum system having a state space that includes a number M of distinct modes, where M is an integer greater than 2. The M modes are logically partitioned into two disjoint subsets (or “bands”), with each mode assigned to exactly one of the bands. The multirail encoding is defined such that a state in which any one of the modes in the first band is occupied and all modes in the second band are unoccupied maps to a logical 0 state of the qubit, and a state in which any one of the modes in the second band is occupied and all modes of the first band are unoccupied maps to a logical 1 state. Systems and methods for generating, measuring, and operating on multirail-encoded qubits are disclosed.
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公开(公告)号：US20220171133A1
公开(公告)日：2022-06-02
申请号：US17303819
申请日：2021-06-08
Applicant: Psiquantum, Corp.
Inventor： Jake Smith , Konrad Kieling
Abstract: Circuits for generating a pair of qudits in a maximally entangled state and methods of operating such circuits are disclosed. The circuits can be photonic circuits that use a combination of beam splitters, phase shifters, and detectors to produce an entangled pair of d-dimensional qudits from an input set of 4d photons. In a case where d equals 2, a pair of qubits in a Bell state can be generated.
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公开(公告)号：US11314143B2
公开(公告)日：2022-04-26
申请号：US16941355
申请日：2020-07-28
Applicant: PSIQUANTUM CORP.
Inventor： Mihai Vidrighin , Nikhil Kumar , Gary Gibson
Abstract: An optical switch device includes a first semiconductor structure configured to operate as a first waveguide and a second semiconductor structure configured to operate as a second waveguide. The second semiconductor structure is located above or below the first semiconductor structure and separated from the first semiconductor structure. The second semiconductor structure includes a portion of a first doped region doped with dopants of a first type and a portion of a second doped region doped with dopants of a second type that is different from the dopants of the first type.
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