11 February 2011 Heisenberg-limited quantum sensing and metrology with superpositions of twin-Fock states
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Abstract
We discuss the prospects of performing Heisenberg-limited quantum sensing and metrology using a Mach-Zehnder interferometer with input states that are superpositions of twin-Fock states and where photon number parity measurements are made on one of the output beams of the interferometer. This study is motivated by the experimental challenge of producing twin-Fock states on opposite sides of a beam splitter. We focus on the use of the so-called pair coherent states for this purpose and discuss a possible mechanism for generating them. We also discuss the prospect of using other superstitions of twin-Fock states, for the purpose of interferometry.
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Christopher C. Gerry, Jihane Mimih, "Heisenberg-limited quantum sensing and metrology with superpositions of twin-Fock states", Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 79480D (11 February 2011); doi: 10.1117/12.873201; https://doi.org/10.1117/12.873201
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