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Proceedings Paper

Enhanced resolution in lossy phase estimation by optical parametric amplification
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Paper Abstract

In the optical sensing context one of the main challenge is to design and implement novel techniques of sensing optimized to work in a lossy scenario, in which effects of environmental disturbances can destroy the benefits deriving from the adoption of quantum resources. Here we describe the experimental implementation of a protocol based on the process of optical parametric amplification to boost interferometry sensitivity in the presence of losses in a minimally invasive scenario. By performing the amplification process on a 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.

Paper Details

Date Published: 6 May 2011
PDF: 7 pages
Proc. SPIE 8072, Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing III, 80720M (6 May 2011); doi: 10.1117/12.886457
Show Author Affiliations
Nicolò Spagnolo, Univ. degli Studi di Roma La Sapienza (Italy)
Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia (Italy)
Chiara Vitelli, Univ. degli Studi di Roma La Sapienza (Italy)
Lorenzo Toffoli, Univ. degli Studi di Roma La Sapienza (Italy)
Francesco De Martini, Univ. degli Studi di Roma La Sapienza (Italy)
Accademia Nazionale dei Lincei (Italy)
Fabio Sciarrino, Univ. degli Studi di Roma La Sapienza (Italy)
Istituto Nazionale di Ottica, CNR (Italy)


Published in SPIE Proceedings Vol. 8072:
Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing III
Jaromír Fiurásek; Ivan Prochazka, Editor(s)

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