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200 papers

Extra-galactic sources of photons have been used to constrain space-time quantum fluctuations in the Universe. In these proposals, the fundamental "fuzziness" of distance caused by space-time quantum fluctuations has been directly…

High Energy Astrophysical Phenomena · Physics 2015-06-24 Yanbei Chen , Linqing Wen , Yiqiu Ma

Using spontaneous parametric down-conversion, photon pairs entangled in frequency and polarization were generated. After frequency resolving the photon pairs, the polarization correlations were measured on several polarization basis, and it…

Quantum Physics · Physics 2007-05-23 Atsushi Yabushita , Takayoshi Kobayashi

The orbital angular momentum of photons, being defined in an infinitely dimensional discrete Hilbert space, offers a promising resource for high-dimensional quantum information protocols in quantum optics. The biggest obstacle to its wider…

Quantum Physics · Physics 2010-09-17 E. Nagali , F. Sciarrino , F. De Martini , B. Piccirillo , E. Karimi , L. Marrucci , E. Santamato

Cold atomic ensembles can mediate the generation of entanglement between pairs of photons. Photons with specific directions of propagation are detected, and the entanglement can reside in any of the degrees of freedom that describe the…

Quantum Physics · Physics 2009-11-13 Clara I. Osorio , Sergio Barreiro , Morgan W. Mitchell , Juan P. Torres

Quantum optics potentially offers an information channel from the Universe beyond the established ones of imaging and spectroscopy. All existing cameras and all spectrometers measure aspects of the first-order spatial and/or temporal…

Astrophysics · Physics 2015-06-24 Dainis Dravins

The question of the representation of quantum stationary partially polarized waves as random superpositions of different polarization ellipses is addressed. To this end, the Bohmian formulation of quantum mechanics is considered and…

Optics · Physics 2013-06-28 A. Luis , A. S. Sanz

When polarized electrons traverse a region where the laser light is focused their polarization varies even if their energy and direction of motion are not changed. This effect is due to interference of the incoming electron wave and an…

High Energy Physics - Phenomenology · Physics 2009-10-30 G. L. Kotkin , H. Perlt , V. G. Serbo

We consider the effect of spatial correlations on sources of polarized electromagnetic radiation. The sources, assumed to be monochromatic, are constructed out of dipoles aligned along a line such that their orientation is correlated with…

Optics · Physics 2007-05-23 Abhishek Agarwal , Pankaj Jain , Jagdish Rai

We have built an imaging system that uses a photon's position or time-of-flight information to image an object, while using the photon's polarization for security. This ability allows us to obtain an image which is secure against an attack…

Quantum Physics · Physics 2012-12-12 Mehul Malik , Omar S. Magaña-Loaiza , Robert W. Boyd

We derive an alternative representation of the leading-order contribution to the polarization operator in strong-field quantum electrodynamics with a plane-wave electromagnetic background field, which is manifestly symmetric with respect to…

High Energy Physics - Phenomenology · Physics 2015-03-20 S. Meuren , C. H. Keitel , A. Di Piazza

Hypothetical oscillations of probe photons into axion-like particles might be revealed by exploiting the strong fields of high-intensity laser pulses. Considering an arbitrary plane-wave background, we determine the polarization tensor…

High Energy Physics - Phenomenology · Physics 2017-04-26 Selym Villalba-Chávez , Tobias Podszus , Carsten Müller

Photonic crystal cavities can localize light into nanoscale volumes with high quality factors. This permits a strong interaction between light and matter, which is important for the construction of classical light sources with improved…

Quantum Physics · Physics 2009-11-11 Jelena Vuckovic , Dirk Englund , David Fattal , Edo Waks , Yoshihisa Yamamoto

Quantum theories of gravity help us to improve our insight into the gravitational interactions. Motivated by the interesting effect of gravity on the photon trajectory, we treat a quantum recipe concluding a classical interaction of light…

High Energy Physics - Theory · Physics 2017-10-30 Azizollah Azizi , Soudabe Nasirimoghadam

Non-classical correlations in quantum optics as resources for quantum computation are important in the quest for highly-specialized quantum devices. The standard way to investigate such effects relies on either the characterization of the…

High-order quantum coherence reveals the statistical correlation of quantum particles. Manipulation of quantum coherence of light in temporal domain enables to produce single-photon source, which has become one of the most important quantum…

We present a theoretical analysis of the connection between classical polarization optics and quantum mechanics of two-level systems. First, we review the matrix formalism of classical polarization optics from a quantum information…

Quantum Physics · Physics 2009-11-13 A. Aiello , G. Puentes , J. P. Woerdman

We show that any pure, two-mode, $N$-photon state with $N$ odd or equal to two can be transformed into an orthogonal state using only linear optics. According to a recently suggested definition of polarization degree, this implies that all…

Photon-photon interactions mediated by the neutral hydrogen background can transform plane polarization into circular polarization, through completely forward processes, [gamma+gamma+atom-> gamma+ gamma+atom], in which only the photon…

Cosmology and Nongalactic Astrophysics · Physics 2013-04-04 R. F. Sawyer

We show that there is only one operator having some minimal properties enabling it to be a one photon position operator. These proerties are stated, and the solution is shown to be the photon position operator proposed by Pryce. This…

High Energy Physics - Theory · Physics 2009-10-22 J. Mourad

We use the polarized Fock states to describe the coupled molecule-cavity hybrid system in quantum electrodynamics. The molecular permanent dipoles polarize the photon field by displacing its vector potential, leading to non-orthogonality…

Quantum Physics · Physics 2020-05-04 Arkajit Mandal , Sebastian Montillo Vega , Pengfei Huo