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

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

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...

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Veröffentlicht in:arXiv.org 2017-11
Hauptverfasser: Ma, Xiaoping, You, Chenglong, Adhikari, Sushovit, Matekole, Elisha S, Hwang, Lee, Dowling, Jonathan P
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creator Ma, Xiaoping
You, Chenglong
Adhikari, Sushovit
Matekole, Elisha S
Hwang, Lee
Dowling, Jonathan P
description 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.
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Sensitivity
Shot
title Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states
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