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- W1987408033 abstract "We give a detailed discussion of optimal quantum states for optical two-mode interferometry in the presence of photon losses. We derive analytical formulae for the precision of phase estimation obtainable using quantum states of light with a definite photon number and prove that maximization of the precision is a convex optimization problem. The corresponding optimal precision, i.e. the lowest possible uncertainty, is shown to beat the standard quantum limit thus outperforming classical interferometry. Furthermore, we discuss more general inputs: states with indefinite photon number and states with photons distributed between distinguishable time bins. We prove that neither of these is helpful in improving phase estimation precision." @default.
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- W1987408033 date "2009-07-24" @default.
- W1987408033 modified "2023-10-13" @default.
- W1987408033 title "Quantum phase estimation with lossy interferometers" @default.
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- W1987408033 doi "https://doi.org/10.1103/physreva.80.013825" @default.
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