Noise-free quantum-nondemolition measurement using optical solitons

Courty, JM; Spalter, S; Konig, F; Sizmann, A; Leuchs, Gerd

doi:10.1103/PhysRevA.58.1501

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Noise-free quantum-nondemolition measurement using optical solitons

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Courty, J., Spalter, S., Konig, F., Sizmann, A., & Leuchs, G. (1998). Noise-free quantum-nondemolition measurement using optical solitons. PHYSICAL REVIEW A, 58(2), 1501-1508. doi:10.1103/PhysRevA.58.1501.

Cite as: https://hdl.handle.net/21.11116/0000-0002-97FB-9

Abstract

The collision of solitons in optical fibers is a promising scheme for
the quantum-nondemolition measurement of the photon number using the
cross Kerr effect. In a realistic experimental situation, the
sensitivity of the measurement is limited not only by
self-phase-modulation noise of the probe but also by the phase noise
added due to the vibrational excitations of the fiber. Former schemes
proposed to overcome either of these problems are not compatible with
each other. In this paper the sensitivity of different type of detection
is carefully studied. We propose a solution based on the use of a
phase-shifting cavity. We show that this provides a conceptually and
practically simple solution eliminating simultaneously both sources of
excess noise. [S1050-2947(98)04406-0].