We implement a direct detection scheme based on hybrid photodetectors to experimentally investigate high- order correlations for detected photons by means of experimentally accessible quantities. The scheme is self- consistent, allowing the estimation of all the involved parameters (quantum efficiency, number of modes, and average energy). In particular, we show how high-order correlation functions can be exploited to fully characterize bipartite multimode states in regimes realistic for quantum technology, that is, in the mesoscopic photon-number domain and with limited quantum efficiency. Furthermore, we introduce a nonclassicality criterion based on a simple linear combination of high-order correlation functions.

Measuring high-order photon-number correlations in experiments with multimode pulsed quantum states / A. Allevi, S. Olivares, M. Bondani. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 85:6(2012 Jun 25), pp. 063835.063835.1-063835.063835.5.

Measuring high-order photon-number correlations in experiments with multimode pulsed quantum states

S. Olivares
Secondo
;
2012

Abstract

We implement a direct detection scheme based on hybrid photodetectors to experimentally investigate high- order correlations for detected photons by means of experimentally accessible quantities. The scheme is self- consistent, allowing the estimation of all the involved parameters (quantum efficiency, number of modes, and average energy). In particular, we show how high-order correlation functions can be exploited to fully characterize bipartite multimode states in regimes realistic for quantum technology, that is, in the mesoscopic photon-number domain and with limited quantum efficiency. Furthermore, we introduce a nonclassicality criterion based on a simple linear combination of high-order correlation functions.
classical and quantum correlations ; hybrid photodetectors ; nonclassicality
Settore FIS/03 - Fisica della Materia
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/178055
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