Abstract
We propose the use of a balanced -port as a technique to measure the pure quantum state of a single-mode light field. In our scheme the coincidence signals of simple, realistic photodetectors are recorded at the output of the -port. We show that applying different arrangements both the modulus and the phase of the coefficients in a finite superposition state can be measured. In particular, the photon statistics can be so measured with currently available devices.
- Received 29 August 1995
DOI:https://doi.org/10.1103/PhysRevLett.76.2464
©1996 American Physical Society