Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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The Phase-sensitivity of a Mach-Zehnder Interferometer for Coherent Light

  • Received : 1999.01.04
  • Published : 1999.03.01
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Abstract

We have studied the sensitivity of four different phase shift measurement schemes with a Mach-Zehnder interferometer. The input light is considered to be in a coherent state and the detectors are assumed to be ideal with the quantum efficiency of unity. It is shown by direct calculation of the operators corresponding to the measurement schemes that the uncertainty of the phase-shift measurement is limited to the classical one $\frac{1}{\sqrt{m}}$(m is the average number of the photons in the input state) regardless of the phase-shift measurement schemes.

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Cited by

  1. Phase sensitivity of a Mach-Zehnder interferometer with single-intensity and difference-intensity detection vol.98, pp.4, 2018, https://doi.org/10.1103/PhysRevA.98.043856