Enhanced Resolution of Lossy Interferometry by Coherent Amplification of Single Photons

Autor:	Vitelli, C., Spagnolo, N., Toffoli, L., Sciarrino, F., De Martini, F.
Rok vydání:	2010
Předmět:	Quantum Physics Physics - Atomic Physics Physics - Optics
Zdroj:	Phys. Rev. Lett. 105, 113602 (2010)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.105.113602
Popis:	In the quantum sensing context most of the efforts to design novel quantum techniques of sensing have been constrained to idealized, noise-free scenarios, in which effects of environmental disturbances could be neglected. In this work, we propose to exploit optical parametric amplification to boost interferometry sensitivity in the presence of losses in a minimally invasive scenario. By performing the amplification process on the microscopic probe after the interaction with the sample, we can beat the losses detrimental effect on the phase measurement which affects the single-photon state after its interaction with the sample, and thus improve the achievable sensitivity. Comment: 4 + 3 pages, 3 + 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1004.2361 Zobrazit plný text záznamu View this record from Arxiv