Pulsed homodyne Gaussian quantum tomography with low detection efficiency

Esposito M, Benatti F, Floreanini R, Olivares S, Randi F, Titimbo K, Pividori M, Novelli F, Cilento F, Parmigiani F, Fausti D (2014)

Publication Type: Journal article

Publication year: 2014

Journal

New Journal of Physics Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

Book Volume: 16

Article Number: 043004

DOI: 10.1088/1367-2630/16/4/043004

Abstract

Pulsed homodyne quantum tomography usually requires a high detection efficiency, limiting its applicability in quantum optics. Here, it is shown that the presence of low detection efficiency (<50%) does not prevent the tomographic reconstruction of quantum states of light, specifically, of Gaussian states. This result is obtained by applying the so-called minimax adaptive reconstruction of the Wigner function to pulsed homodyne detection. In particular, we prove, by both numerical and real experiments, that an effective discrimination of different Gaussian quantum states can be achieved. Our finding paves the way to a more extensive use of quantum tomographic methods, even in physical situations in which high detection efficiency is unattainable. © 2014 IOP Publishing Ltd.

Authors with CRIS profile

Daniele Fausti

Involved external institutions

Università degli Studi di Trieste IT Italy (IT) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) IT Italy (IT) Università degli studi di Milano IT Italy (IT) Elettra Sincrotrone Trieste S.C.p.A. IT Italy (IT)

How to cite

APA:

Esposito, M., Benatti, F., Floreanini, R., Olivares, S., Randi, F., Titimbo, K.,... Fausti, D. (2014). Pulsed homodyne Gaussian quantum tomography with low detection efficiency. New Journal of Physics, 16. https://doi.org/10.1088/1367-2630/16/4/043004

MLA:

Esposito, Martina, et al. "Pulsed homodyne Gaussian quantum tomography with low detection efficiency." New Journal of Physics 16 (2014).

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