Nonclassical readout of optical memories under local energy constraint

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Nonclassical readout of optical memories under local energy constraint. / Spedalieri, Gaetana; Lupo, Cosmo; Pirandola, Stefano.

2015. 1-11.

Research output: Contribution to conferencePaper

Harvard

Spedalieri, G, Lupo, C & Pirandola, S 2015, 'Nonclassical readout of optical memories under local energy constraint' pp. 1-11.

APA

Spedalieri, G., Lupo, C., & Pirandola, S. (2015). Nonclassical readout of optical memories under local energy constraint. 1-11.

Vancouver

Spedalieri G, Lupo C, Pirandola S. Nonclassical readout of optical memories under local energy constraint. 2015.

Author

Spedalieri, Gaetana ; Lupo, Cosmo ; Pirandola, Stefano. / Nonclassical readout of optical memories under local energy constraint. 11 p.

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@conference{b92b48b99cb04701aad53541bace46e0,
title = "Nonclassical readout of optical memories under local energy constraint",
abstract = "Nonclassical states of light play a central role in many quantum information protocols. Their quantum features have been exploited to improve the readout of information from digital memories, modelled as arrays of microscopic beam splitters [S. Pirandola, Phys. Rev. Lett. 106, 090504 (2011)]. In this model of {"}quantum reading{"}, a nonclassical source of light with Einstein-Podolski-Rosen correlations has been proven to retrieve more information than any classical source. In particular, the quantum-classical comparison has been performed under a global energy constraint, i.e., by fixing the mean total number of photons irradiated over each memory cell. In this paper we provide an alternative analysis which is based on a local energy constraint, meaning that we fix the mean number of photons per signal mode irradiated over the memory cell. Under this assumption, we investigate the critical number of signal modes after which a nonclassical source of light is able to beat any classical source irradiating the same number of signals.",
keywords = "quant-ph",
author = "Gaetana Spedalieri and Cosmo Lupo and Stefano Pirandola",
note = "Combined Pre-proceedings of the 4th International Workshop on Physics and Computation (PC 2011) and the 3rd International Hypercomputation Workshop (HyperNet 11), Turku, Finland, 6-10 June 2011, pp 79-90",
year = "2015",
month = "9",
day = "3",
language = "English",
pages = "1--11",

}

RIS (suitable for import to EndNote) - Download

TY - CONF

T1 - Nonclassical readout of optical memories under local energy constraint

AU - Spedalieri, Gaetana

AU - Lupo, Cosmo

AU - Pirandola, Stefano

N1 - Combined Pre-proceedings of the 4th International Workshop on Physics and Computation (PC 2011) and the 3rd International Hypercomputation Workshop (HyperNet 11), Turku, Finland, 6-10 June 2011, pp 79-90

PY - 2015/9/3

Y1 - 2015/9/3

N2 - Nonclassical states of light play a central role in many quantum information protocols. Their quantum features have been exploited to improve the readout of information from digital memories, modelled as arrays of microscopic beam splitters [S. Pirandola, Phys. Rev. Lett. 106, 090504 (2011)]. In this model of "quantum reading", a nonclassical source of light with Einstein-Podolski-Rosen correlations has been proven to retrieve more information than any classical source. In particular, the quantum-classical comparison has been performed under a global energy constraint, i.e., by fixing the mean total number of photons irradiated over each memory cell. In this paper we provide an alternative analysis which is based on a local energy constraint, meaning that we fix the mean number of photons per signal mode irradiated over the memory cell. Under this assumption, we investigate the critical number of signal modes after which a nonclassical source of light is able to beat any classical source irradiating the same number of signals.

AB - Nonclassical states of light play a central role in many quantum information protocols. Their quantum features have been exploited to improve the readout of information from digital memories, modelled as arrays of microscopic beam splitters [S. Pirandola, Phys. Rev. Lett. 106, 090504 (2011)]. In this model of "quantum reading", a nonclassical source of light with Einstein-Podolski-Rosen correlations has been proven to retrieve more information than any classical source. In particular, the quantum-classical comparison has been performed under a global energy constraint, i.e., by fixing the mean total number of photons irradiated over each memory cell. In this paper we provide an alternative analysis which is based on a local energy constraint, meaning that we fix the mean number of photons per signal mode irradiated over the memory cell. Under this assumption, we investigate the critical number of signal modes after which a nonclassical source of light is able to beat any classical source irradiating the same number of signals.

KW - quant-ph

M3 - Paper

SP - 1

EP - 11

ER -