English
Related papers

Related papers: Carrier trapping and luminescence polarization in …

200 papers

A quantum emitter placed in a nanophotonic structure can result in non-reciprocal phenomena like chiral light excitation. Here, we present a theoretical model to couple circularly polarized emitters described by the density matrix formalism…

We show theoretically that polariton pairs with a high degree of polarization entanglement can be produced through parametric scattering. We demonstrate that it can emerge in coincidence experiments, even at low excitation densities where…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 S. Portolan , O. Di Stefano , S. Savasta , V. Savona

We report on our theoretical studies of the luminescence spectra of a quantum cascade laser where the quantum wells in the active regions are replaced by parabolic quantum dots. We analyze the influence of shape and size of the dots on the…

Strongly Correlated Electrons · Physics 2015-06-24 V. M. Apalkov , Tapash Chakraborty

The first experimental realization of a photon Bose-Einstein condensate was demonstrated more than a decade ago. However, the polarization of the condensate has not been fully understood and measured in this weakly driven-dissipative…

We experimentally investigate the back-scattering properties of an array of atoms that is evanescently coupled to an optical nanofiber in the strongly non-paraxial regime. We observe that the power and the polarization of the back-scattered…

Atomic Physics · Physics 2014-04-01 D. Reitz , C. Sayrin , B. Albrecht , I. Mazets , R. Mitsch , P. Schneeweiss , A. Rauschenbeutel

A spherical quantum dot (QD) heterosystem CdS/SiO$_2$ has been studied. Each QD has a hydrogen-like impurity in its center. Besides that, it has been accounted that a polarization trap for electron exists at the interfaces due to the…

Mesoscale and Nanoscale Physics · Physics 2017-12-15 V. I. Boichuk , R. Ya. Leshko , D. S. Karpyn

The decay time of the linear polarization degree of the luminescence in strongly confined semiconductor quantum dots with asymmetrical shape is calculated in the frame of second-order quasielastic interaction between quantum dot charge…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 E. Tsitsishvili , R. v. Baltz , H. Kalt

Recent spectropolarimetric observations of Herbig AeBe stellar systems show linear polarization variability with wavelength and epoch near their obscured H-alpha emission. Surprisingly, this polarization is not coincident with the H-alpha…

Astrophysics · Physics 2009-11-13 J. R. Kuhn , S. V. Berdyugina , D. M. Fluri , D. M. Harrington , J. O. Stenflo

Polarization of light signifies transversal, anisotropic and asymmetrical statistical property of electromagnetic radiation about direction of propagation. Traditionally, optical-polarization is characterized by Stokes theory susceptible to…

Optics · Physics 2015-06-15 Ravi S. Singh , Hari Prakash

Within the new description of the polarization structure of quantum light (given in Part I) some types of generalized coherent states related to the polarization SU(2) group are examined. With their help we give a quasiclassical description…

Quantum Physics · Physics 2008-02-03 V. P. Karassiov

Based upon standard angular momentum theory, we develop a framework to investigate polarization squeezing and multipartite entanglement of a quantum light field. Both mean polarization and variances of the Stokes parameters are obtained…

Quantum Physics · Physics 2016-04-27 G. R. Jin , S. Luo , Y. C. Liu , H. Jing , W. M. Liu

We experimentally study the heating of trapped atomic ions during measurement of their internal qubit states. During measurement, ions are projected into one of two basis states and discriminated by their state-dependent fluorescence. We…

Quantum Physics · Physics 2024-10-16 A. J. Rasmusson , Ilyoung Jung , Frank G. Schroer , Antonis Kyprianidis , Philip Richerme

Light-induced quantum phases offer the potential for simple and powerful tuning of material properties. For example, simply illuminating 2D materials in the integer quantum Hall regime with polarized light is predicted to drive quantum…

Quantum Gases · Physics 2025-12-09 Yifei Bai , Anna R. Dardia , Toshihiko Shimasaki , David M. Weld

Recent experiments on two-dimensional exciton systems have shown the excitons collect in shallow in-plane traps. We find that Bose condensation in a trap results in a dramatic change of the exciton photoluminescence (PL) angular…

Condensed Matter · Physics 2007-05-23 Jonathan Keeling , L. S. Levitov , P. B. Littlewood

Observations of polariton condensation in semiconductor microcavities suggest that polaritons can be exploited as a novel type of laser with low input-power requirements. The low-excitation regime is approximately equivalent to thermal…

Mesoscale and Nanoscale Physics · Physics 2013-07-16 Tomoyuki Horikiri , Yasuhiro Matsuo , Yutaka Shikano , Andreas Loeffler , Sven Hoefling , Alfred Forchel , Yoshihisa Yamamoto

The interaction of matter with quantum light leads to phenomena which cannot be explained by semiclassical approaches. Of particular interest are states with broad photon number distributions which allow processes with high-order Fock…

Quantum Physics · Physics 2021-01-13 H. Rose , D. V. Popolitova , O. V. Tikhonova , T. Meier , P. R. Sharapova

A mechanically compliant element can be set into motion by the interaction with light. In turn, this light-driven motion can give rise to ponderomotive correlations in the electromagnetic field. In optomechanical systems, cavities are often…

Optical trapping is having ever-increasing impact in science $-$ particularly biophysics, photonics and most recently in quantum optomechanics $-$ owing to its superior capability for manipulating nanoscale structures and materials.…

The changes in excitation dependence of efficiency with temperature is modeled for a wurtzite InGaN light-emitting diode. The model incorporates bandstructure changes with carrier density arising from screening of quantum-confined Stark…

Optics · Physics 2015-06-16 Weng W. Chow

We theoretically investigate trapping conditions for ultracold polar molecules in optical lattices, when external magnetic and electric fields are simultaneously applied. Our results are based on an accurate electronic-structure calculation…

Quantum Physics · Physics 2017-08-29 Ming Li , Alexander Petrov , Constantinos Makrides , Eite Tiesinga , Svetlana Kotochigova