2021•International Journal of Physical ResearchOpen access

Quantum non-demolition measurement in the interferometer

D. L. Khokhlov

Abstract

The schemes of the arrangements based on the Mach-Zehnder interferometer and the interferometer with two polarizing beam splitters are considered. The interferometers in both the schemes are equipped with some devices, creating a Kerr medium, to perform the quantum non-demolition measurement of a single photon. Such a device gives which way information of the photon while preserving the work of the interferometer.

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Key concepts: Interferometry, Mach–Zehnder interferometer, Astronomical interferometer, Beam splitter, Optics, Physics, Demolition, Photon