Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states

Xiaoping Ma; Chenglong You; Sushovit Adhikari; Elisha S. Matekole; Hwang Lee; Jonathan P. Dowling

doi:10.1364/OE.26.018492

Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states

Quantum Physics 2020-03-09 v1

Authors: Xiaoping Ma , Chenglong You , Sushovit Adhikari , Elisha S. Matekole , Hwang Lee , Jonathan P. Dowling

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Abstract

We theoretically study the phase sensitivity of an SU(1,1) interferometer with a thermal state and squeezed vacuum state as inputs and parity detection as measurement. We find that phase sensitivity can beat the shot-noise limit and approaches the Heisenberg limit with increasing input photon number.

Keywords

phase estimation su(1,1) interferometer thermal state squeezed vacuum parity detection shot-noise limit heisenberg limit

Cite

@article{arxiv.1711.03635,
  title  = {Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states},
  author = {Xiaoping Ma and Chenglong You and Sushovit Adhikari and Elisha S. Matekole and Hwang Lee and Jonathan P. Dowling},
  journal= {arXiv preprint arXiv:1711.03635},
  year   = {2020}
}

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7 pages, 6 figures

Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states

Abstract

Keywords

Cite

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