公开(公告)号：US20240256935A1

公开(公告)日：2024-08-01

申请号：US18332652

申请日：2023-06-09

Applicant: ORCA Computing Limited

Inventor： Alex NEVILLE ,  Brendan PANKOVICH

IPC: G06N10/40

CPC classification number: G06N10/40

Abstract: An apparatus includes an optical circuit with an interferometer and a detector arrangement. The interferometer is arranged to receive, as 2N input optical modes, N dual-rail encoded photonic qubits, each photonic qubit encoded as probability amplitudes corresponding to the photon occupation of two orthogonal optical modes, where N>2. The interferometer is arranged to interfere the N dual-rail encoded photonic qubits such that (i) a beamsplitter interaction is performed on the first mode of the first qubit and the second mode of the Nth qubit, and (ii) a beamsplitter interaction is performed on the second mode of the jth qubit and the first mode of the (j+1)th qubit for all j between 1 and N−1. The interferometer is arranged to output 2N optical modes. The detector arrangement includes one or more photodetectors to measure a photon occupation of each of the 2N output optical modes.