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ORCA Computing Limited (20240256935). Multi-Qubit Entangling Measurements in Linear Optics

From WikiPatents

Multi-Qubit Entangling Measurements in Linear Optics

Organization Name

ORCA Computing Limited

Inventor(s)

Alex Neville of London GB

Brendan Pankovich of Toronto CA

Multi-Qubit Entangling Measurements in Linear Optics

This abstract first appeared for US patent application 20240256935 titled 'Multi-Qubit Entangling Measurements in Linear Optics

Original Abstract Submitted

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 nqubit, and (ii) a beamsplitter interaction is performed on the second mode of the jqubit and the first mode of the (j+1)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.

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