E. M. Dianov, O. G. Okhotnikov, A. M. Prokhorov, V. A. Chernykh, E. A. Shcherbakov, “Autoheterodyne method for nondestructive determination of the number of photons”, Kvantovaya Elektronika, 1989, Volume 16, Number 4,Pages <nobr>864

Fiber and integrated optics, laser applications and other topics in quantum electronics

Autoheterodyne method for nondestructive determination of the number of photons

E. M. Dianov, O. G. Okhotnikov, A. M. Prokhorov, V. A. Chernykh, E. A. Shcherbakov

Abstract: A probe wave (λ = 1.28 μm) experienced a phase shift due to the interaction with a signal wave (λ = 1.55 μm) in a nonlinear fiber interferometer with arms differing by 5.7 km. Measurements showed that for a signal wave of 70 μW power this phase shift amounted to 5 X 10 ^– 2. Such a shift measurement method should be suitable for nondestructive determination of the number of photons.

UDC: 681.7.068

PACS: 42.50.Dv, 42.81.Wg, 07.60.Ly, 42.55.Px, 42.65.Hw

Received: 14.07.1988