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Photon-added and photon-depleted “semi”-coherent field: Non-classical properties

Alireza Dehghani, B. Mojaveri

The European Physical Journal PlusNov 1, 20175 citations

Non-classicality and Non-Gaussianity of Photons Added and Subtracted Multi-Coherent States

Y. Oulouda, Mohammed El Falaki, Mohammed Daoud A

International Journal of Theoretical PhysicsMay 21, 20215 citations

Nonclassical effects in the photon-added thermal state

G Nelson Jones, Jeffrey Haight, Ching Tsung Lee

It was shown recently by Lee that, if a radiation state has zero probability of having zero photon, then the state is as nonclassical as possible. This suggests that one can convert any classical state into one of the most nonclassical states simply by adding one photon to it, which can be achieved by passing an excited atom through the cavity containing the classical radiation and accepting the resultant only if the exit atom is found to be in its ground state. This concept is applied to the thermal state as an illustration.It was shown recently by Lee that, if a radiation state has zero probability of having zero photon, then the state is as nonclassical as possible. This suggests that one can convert any classical state into one of the most nonclassical states simply by adding one photon to it, which can be achieved by passing an excited atom through the cavity containing the classical radiation and accepting the resultant only if the exit atom is found to be in its ground state. This concept is applied to the thermal state as an illustration.

Quantum and Semiclassical Optics Journal of the European Optical Society Part BJun 1, 199762 citations

Laser Plasma Interaction and Non-classical Properties of Radiation Field

Aabhaas Vineet Mallik, Pratyay Ghosh, Ananda Dasgupta

We show by explicit calculations that non-classical states of the radiation field can be produced by allowing short term interaction between a coherent state of the radiation field with plasma. Whereas, long term interaction, which thermalizes the radiation field, can produce non-classical states of the radiation field only at sufficiently small temperatures. A measure of k-th order squeezing, stricter than the one proposed by Zhang et al, is used to check the emergence of squeezing. It is also shown that photons in the considered thermalized field would follow super-Poissonian statistics.We show by explicit calculations that non-classical states of the radiation field can be produced by allowing short term interaction between a coherent state of the radiation field with plasma. Whereas, long term interaction, which thermalizes the radiation field, can produce non-classical states of the radiation field only at sufficiently small temperatures. A measure of k-th order squeezing, stricter than the one proposed by Zhang et al, is used to check the emergence of squeezing. It is also shown that photons in the considered thermalized field would follow super-Poissonian statistics.

arXiv:1105.4831May 24, 20110 citations

Construction of Classical and Non-classical Coherent Photon States

Reinhard Honegger, Alfred Rieckers

Annals of PhysicsMay 1, 20016 citations

Quantum interference and non-locality of independent photons from disparate sources

Ralph Wiegner, Joachim von Zanthier, G. S. Agarwal

We quantitatively investigate the non-classicality and non-locality of a whole new class of mixed disparate quantum and semiquantum photon sources at the quantum-classical boundary. The latter include photon added thermal and photon added coherent sources, experimentally investigated recently by Zavatta et al. [Phys. Rev. Lett. 103, 140406 (2009)]. The key quantity in our investigations is the visibility of the corresponding photon-photon correlation function. We present explicit results on the violations of the Cauchy-Schwarz inequality - which is a measure of nonclassicality - as well as of Bell-type inequalities.We quantitatively investigate the non-classicality and non-locality of a whole new class of mixed disparate quantum and semiquantum photon sources at the quantum-classical boundary. The latter include photon added thermal and photon added coherent sources, experimentally investigated recently by Zavatta et al. [Phys. Rev. Lett. 103, 140406 (2009)]. The key quantity in our investigations is the visibility of the corresponding photon-photon correlation function. We present explicit results on the violations of the Cauchy-Schwarz inequality - which is a measure of nonclassicality - as well as of Bell-type inequalities.

arXiv:1005.4176Journal of Physics B Atomic Molecular and Optical PhysicsFeb 15, 201110 citations

Non-classicality of photon added coherent and thermal radiations

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