Title :
Enhanced resolution of lossy interferometry by coherent amplification
Author :
Vitelli, C. ; Spagnolo, N. ; Toffoli, L. ; De Martini, F. ; Sciarrino, F.
Author_Institution :
Dipt. di Fis., Sapienza Univ. di Roma, Rome, Italy
Abstract :
We present a strategy to perform phase estimation protocols in the presence of noisy detectors. This approach involves coherent and single photon states as input signals, and phase sensitive amplification after the interaction with the sample and before detection losses. By adopting the amplification stage, the accuracy of the protocol can reach the performances of a lossless probe state even in presence of imperfect detectors.
Keywords :
light coherence; light interferometry; optical parametric amplifiers; phase estimation; quantum optics; coherent amplification; lossy interferometry; noisy detectors; optical parametric amplifier; phase estimation protocols; phase sensitive amplification; single photon states; Metrology; Optical losses; Optical sensors; Photonics; Probes; Protocols;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
