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公开(公告)号:US20220101168A1
公开(公告)日:2022-03-31
申请号:US17488633
申请日:2021-09-29
发明人: Eli Bourassa , Ilan Tzitrin , Krishnakumar Sabapathy , Guillaume Dauphinais , Ish Dhand , Saikat Guha , Nicolas Menicucci , Rafael Alexander , Ben Baragiola , Takaya Matsuura , Blayney Walshe
摘要: A system for scalable, fault-tolerant photonic quantum computing includes multiple optical circuits, multiple photon number resolving detectors (PNRs), a multiplexer, and an integrated circuit (IC). During operation, the optical circuits generate output states via Gaussian Boson sampling (GBS), and the PNRs generate qubit clusters based on the output states. The multiplexer multiplexes the qubit clusters and replaces empty modes with squeezed vacuum states, to generate multiple hybrid resource states. The IC stitches together the hybrid resource states into a higher-dimensional cluster state that includes states for fault-tolerant quantum computation.
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公开(公告)号:US11341428B2
公开(公告)日:2022-05-24
申请号:US17488633
申请日:2021-09-29
发明人: Joseph Eli Bourassa , Ilan Tzitrin , Krishnakumar Sabapathy , Guillaume Dauphinais , Ish Dhand , Saikat Guha , Nicolas Menicucci , Rafael Alexander , Ben Baragiola , Takaya Matsuura , Blayney Walshe
摘要: A system for scalable, fault-tolerant photonic quantum computing includes multiple optical circuits, multiple photon number resolving detectors (PNRs), a multiplexer, and an integrated circuit (IC). During operation, the optical circuits generate output states via Gaussian Boson sampling (GBS), and the PNRs generate qubit clusters based on the output states. The multiplexer multiplexes the qubit clusters and replaces empty modes with squeezed vacuum states, to generate multiple hybrid resource states. The IC stitches together the hybrid resource states into a higher-dimensional cluster state that includes states for fault-tolerant quantum computation.
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公开(公告)号:US11125773B2
公开(公告)日:2021-09-21
申请号:US16922158
申请日:2020-07-07
发明人: Saikat Guha , Haoyu Qi
摘要: A method includes sending a probe beam into a beam path that induces a lateral displacement to the probe beam. The probe beam includes a plurality of orthogonal spatial modes that are entangled with each other. The method also includes measuring a phase of each spatial mode from the plurality of orthogonal spatial modes in the probe beam at a detector disposed within a near field propagation regime of the probe beam. The method also includes estimating the lateral displacement of the probe beam based on a phase of each spatial mode from the plurality of spatial modes in the probe beam after the beam path.
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