#7800. Phase sensitivity of an SU (1 , 1) interferometer via product detection

September 2026publication date
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Journal’s subject area:
Condensed Matter Physics;
Electrical and Electronic Engineering;
Atomic and Molecular Physics, and Optics;
Control and Systems Engineering;
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Abstract:
We theoretically analyze the phase sensitivity of an SU (1 , 1) interferometer with various input states by product detection in this paper. This interferometer consists of two parametric amplifiers that play the role of beam splitters in a traditional Mach–Zehnder interferometer. The product of the amplitude quadrature of one output mode and the momentum quadrature of the other output mode is measured via balanced homodyne detection.
Keywords:
Phase sensitivity; Product detection; SU (1 , 1) interferometer

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