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
Format: Artikel
Sprache:eng
Schlagworte:
Physics - Quantum Physics
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Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1711.03635