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Related papers: Quantum Maxwell-Bloch equations for spontaneous em…

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From the microscopic quantum Langevin equations (QLEs) we derive the effective semiconductor QLEs and the associated noise correlations which are valid at a low-injection level and in real devices. Applying the semiconductor QLEs to…

Quantum Physics · Physics 2009-10-31 Hiroshi Fujisaki , Akira Shimizu

A quantum kinetic equation coupled with Maxwell's equation is used to estimate the laser power required at an XFEL facility to expose intrinsically quantum effects in the process of QED vacuum decay via spontaneous pair production. A 9…

Nuclear Theory · Physics 2010-03-04 C. D. Roberts , S. M. Schmidt , D. V. Vinnik

The nonlinear optical properties of semiconductors near an excitonic resonance are theoretically investigated by using the macroscopic J-model [Th. Oestreich and A. Knorr, Phys. Rev. B 48, 17811 (1993); ibid. 50, 5717 (1994)] based on the…

Materials Science · Physics 2012-02-07 Oleksii A. Smyrnov , Fabio Biancalana

We report on the observation of spontaneous bursts of coherent radiation from a quantum-degenerate gas of nonequilibrium electron-hole pairs in semiconductor quantum wells. Unlike typical spontaneous emission from semiconductors, which…

Mesoscale and Nanoscale Physics · Physics 2013-12-17 J. -H. Kim , G. T. Noe , S. A. McGill , Y. Wang , A. K. Wojcik , A. A. Belyanin , J. Kono

The paper studies Bloch oscillations of cold neutral atoms in the optical lattice. The effect of spontaneous emission on the dynamics of the system is analyzed both analytically and numerically. The spontaneous emission is shown to cause…

Quantum Physics · Physics 2009-11-07 A. R. Kolovsky , A. V. Ponomarev , H. J. Korsch

We present a fully quantum-electrodynamical formalism suitable to evaluate the spontaneous emission rate and pattern from a dipole embedded in a non-absorbing and lossless multilayer dielectric structure. In the model here developed the…

Other Condensed Matter · Physics 2008-12-26 Celestino Creatore , Lucio Claudio Andreani

The ability to perform fast, high-fidelity readout of quantum bits (qubits) is essential to the goal of building a quantum computer. However, coupling a fast measurement channel to a superconducting qubit typically also speeds up its…

We present an implementation of the Maxwell-Bloch (MB) formalism for the study of x-ray emission dynamics from periodic multilayer materials whether they are artificial or natural. The treatment is based on a direct…

Optics · Physics 2021-04-14 O. Peyrusse , P. Jonnard , J. -M. André

This paper describes a calculation of the spontaneous emission limited linewidth of a semiconductor laser consisting of hybrid or heterogeneously integrated, silicon and III-V intracavity components. Central to the approach are a)…

Optics · Physics 2021-12-22 Weng W. Chow , Yating Wan , John E. Bowers , Frédéric Grillot

We study theoretically the spontaneous emission from an inhomogeneous ensemble of quantum dots in the weak excitation limit. We show that collective, superradiance-like effects lead to an enhanced emission rate in the presence of…

Mesoscale and Nanoscale Physics · Physics 2012-09-24 Michał Kozub , Łukasz Pawicki , Paweł Machnikowski

It is shown that the interference between spontaneous emission into the non-lasing supermode and the laser field of a semiconductor laser array causes spatial holeburning which couples the dynamics of the spontaneous emission with the laser…

Optics · Physics 2009-10-30 Holger F. Hofmann , Ortwin Hess

We examine the experimental requirements for realizing a high-gain Quantum free-electron laser (Quantum FEL). Beyond fundamental constraints on electron beam and undulator, we discuss optimized interaction geometries, include coherence…

Accelerator Physics · Physics 2019-05-22 Alexander Debus , Klaus Steiniger , Peter Kling , Moritz Carmesin , Roland Sauerbrey

The spontaneous emission rate of dipole emitters close to plasmonic dimers are theoretically studied within a nonlocal hydrodynamic model. A nonlocal model has to be used since quantum emitters in the immediate environment of a metallic…

Cooperative spontaneous recombination (superfluorescence) of electron-hole plasmas in semiconductors has been a challenge to observe due to ultrafast decoherence. We argue that superfluorescence can be achieved in quantum-confined…

Mesoscale and Nanoscale Physics · Physics 2009-07-28 Y. D. Jho , X. Wang , J. Kono , D. H. Reitze , A. A. Belyanin , V. V. Kocharovsky , Vl. V. Kocharovsky , G. S. Solomon

We report a self-consistent quasinormal mode theory for nanometer scale electromagnetism where the possible nonlocal and quantum effects are treated through quantum surface responses. With Feibelman's frequency-dependent \textit{d}…

Optics · Physics 2022-04-05 Qiang Zhou , Pu Zhang , Xue-Wen Chen

Efficient generation of radiation in the mid- and far- infrared relies primarily on lasers and coherent nonlinear optical phenomena driven by lasers. This wavelength range lacks of luminescent devices because the spontaneous emission rate…

We calculate the near-field optical spectra of excitons and biexcitons in semiconductor quantum dots naturally occurring at interface fluctuations in GaAs-based quantum wells, using a non-local description of the response function to a…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Ulrich Hohenester , Guido Goldoni , Elisa Molinari

Membrane external-cavity surface-emitting lasers (MECSELs) are at the forefront of pushing the performance limits of vertically emitting semiconductor lasers. Their simple idea of using just a very thin (hundreds of nanometers to few…

Applying the Floquet theory, we developed the method to control excitonic properties of semiconductor quantum wells by a high-frequency electromagnetic field. It is demonstrated, particularly, that the field induces the blue shift of…

Mesoscale and Nanoscale Physics · Physics 2022-04-05 V. M. Kovalev , M. V. Boev , O. V. Kibis

We present a full-wave Maxwell-density matrix simulation tool including c-number stochastic noise terms for the modeling of the spatiotemporal dynamics in active photonic devices, such as quantum cascade lasers (QCLs) and quantum dot (QD)…