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Photonic Quantum Computing

Time-reversed two-photon interferometry for phase super-resolution

arXiv
Authors: Kazuhisa Ogawa, Shuhei Tamate, Hirokazu Kobayashi, Toshihiro Nakanishi, Masao Kitano

Year

2013

Paper ID

31830

Status

Preprint

Abstract Read

~2 min

Abstract Words

78

Citations

N/A

Abstract

We observed two-photon phase super-resolution in an unbalanced Michelson interferometer with classical Gaussian laser pulses. Our work is a time-reversed version of a two-photon interference experiment using an unbalanced Michelson interferometer. A measured interferogram exhibits two-photon phase super-resolution with a high visibility of 97.9% \pm 0.4%. Its coherence length is about 22 times longer than that of the input laser pulses. It is a classical analogue to the large difference between the one- and two-photon coherence lengths of entangled photon pairs.

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  • This paper contributes to the Photonic Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2013 reference point for readers tracking recent quantum research.
  • We observed two-photon phase super-resolution in an unbalanced Michelson interferometer with classical Gaussian laser pulses.

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