Phase diffusion represents a crucial obstacle toward 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.
Optical interferometry in the presence of large phase diffusion / M. Genoni, S. Olivares, D. Brivio, S. Cialdi, D.E. Cipriani, A. Santamato, S. Vezzoli, M. Paris. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 85:4(2012 Apr 10), pp. 043817.043817.1-043817.043817.5.
Titolo: | Optical interferometry in the presence of large phase diffusion |
Autori: | OLIVARES, STEFANO (Secondo) VEZZOLI, STEFANO (Penultimo) PARIS, MATTEO (Ultimo) |
Parole Chiave: | standard quantum limit; enhanced measurements |
Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica della Materia |
Data di pubblicazione: | 10-apr-2012 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevA.85.043817 |
Appare nelle tipologie: | 01 - Articolo su periodico |
File in questo prodotto:
File | Descrizione | Tipologia | Licenza | |
---|---|---|---|---|
PhysRevA.85.043817.pdf | Publisher's version/PDF | Open Access Visualizza/Apri |