Reconfigurable controlled two-qubit operation on a quantum photonic chip

H. W. Li; S. Przeslak; A. O. Niskanen; J. C.F. Matthews; A. Politi; P. Shadbolt; A. Laing; M. Lobino; M. G. Thompson; J. L. O'Brien

doi:10.1088/1367-2630/13/11/115009

Reconfigurable controlled two-qubit operation on a quantum photonic chip

H. W. Li, S. Przeslak, A. O. Niskanen, J. C.F. Matthews, A. Politi, P. Shadbolt, A. Laing, M. Lobino, M. G. Thompson, J. L. O'Brien

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21 Citations (Scopus)

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Abstract

Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled twoqubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98 ± 0.02 average similarity between measured and ideal operations.

Original language	English
Article number	115009
Journal	New Journal of Physics
Volume	13
DOIs	https://doi.org/10.1088/1367-2630/13/11/115009
Publication status	Published - 1 Nov 2011
Externally published	Yes

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Final version_Reconfiguable controlled two-qubitFinal published version, 1.02 MB

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abstract = "Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled twoqubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98 ± 0.02 average similarity between measured and ideal operations.",

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AU - Przeslak, S.

AU - Niskanen, A. O.

AU - Matthews, J. C.F.

AU - Politi, A.

AU - Shadbolt, P.

AU - Laing, A.

AU - Lobino, M.

AU - Thompson, M. G.

AU - O'Brien, J. L.

PY - 2011/11/1

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N2 - Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled twoqubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98 ± 0.02 average similarity between measured and ideal operations.

AB - Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled twoqubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98 ± 0.02 average similarity between measured and ideal operations.

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Reconfigurable controlled two-qubit operation on a quantum photonic chip

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