Unbalanced homodyning for quantum state measurements.

摘要: We propose the reconstruction of quantum state light from homodyne photocounting statistics a single, realistic photodetector. Contrary to development homodyning over last decade, our approach is based on unbalanced detection with weak local oscillator. Representing in terms s-parametrized quasiprobability distributions, method even allows one determine Wigner function provided efficiency detector sufficiently large. show that perturbing effects due classical noise oscillator are small. \textcopyright{} 1996 The American Physical Society.