Optical interferometry in the presence of large phase diffusion
2012; American Physical Society; Volume: 85; Issue: 4 Linguagem: Inglês
10.1103/physreva.85.043817
ISSN1538-4446
AutoresMarco G. Genoni, Stefano Olivares, Davide Brivio, S. Cialdi, Daniele Cipriani, Alberto Santamato, Stefano Vezzoli, Matteo G. A. Paris,
Tópico(s)Photonic and Optical Devices
ResumoPhase diffusion represents a crucial obstacle towards the implementation of high precision interferometric measurements and phase shift based communication channels. Here we present a nearly optimal interferometric scheme based on homodyne detection and coherent signals for the detection of a phase shift in the presence of large phase diffusion. In our scheme the ultimate bound to interferometric sensitivity is achieved already for a small number of measurements, of the order of hundreds, without using nonclassical light.
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