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Phase sensing beyond standard quantum limit with a truncated SU(1,1) interferometer

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Author
P. Gupta
B. Anderson
B. Schmittberger
T. Horrom
C. Hermann-Avigliano
K. Jones
P. Lett
Abstract

We present an SU(1,1) interferometer variation where the second nonlinear interaction is replaced with homodyne detection. Sensitivity measurements as a function of phase demonstrate that our device beats the standard quantum limit by 4dB.

Year of Publication
2017
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Group
JQI