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Interference effects in quantum transitions, giving rise to amplification without inversion, optical transparency and to enhancements in nonlinear optical frequency conversions are considered. Review of the relevant early theoretical and…

Quantum Physics · Physics 2015-06-26 A. K. Popov , S. G. Rautian

The physics of intense laser-matter interactions is described by treating the light pulses classically, anticipating no need to access optical measurements beyond the classical limit. However, the quantum nature of the electromagnetic…

Coherent population transfer between nuclear states using x-ray laser pulses is studied. The laser pulses drive two nuclear transitions between three nuclear states in a setup reminding of stimulated Raman adiabatic passage used for atomic…

Quantum Physics · Physics 2011-10-26 Wen-Te Liao , Adriana Pálffy , Christoph H. Keitel

We have constructed an automated learning apparatus to control quantum systems. By directing intense shaped ultrafast laser pulses into a variety of samples and using a measurement of the system as a feedback signal, we are able to reshape…

Quantum Physics · Physics 2009-11-06 B. J. Pearson , J. L. White , T. C. Weinacht , P. H. Bucksbaum

The coherent manipulation of the atomic matter waves is of great interest both in science and technology. In order to study how an atom optic device alters the coherence of an atomic beam, we consider the quantum lens proposed by Averbukh…

Quantum Physics · Physics 2014-06-18 I. G. da Paz , H. M. Frazão , M. C. Nemes , J. G. Peixoto de Faria

A new perspective on how to manipulate molecules by means of very strong laser pulses is emerging with insights from the so-called light-induced potentials, which are the adiabatic potential energy surfaces of molecules severely distorted…

Chemical Physics · Physics 2016-03-03 Bo Y. Chang , Ignacio R. Sola , Seokmin Shin

The effects of coherence of quantum transitions and the interference of resonant nonlinear optical processes on the spectra of absorption, amplification, and nonlinear-optical generation are considered. The most favorable conditions are…

Quantum Physics · Physics 2007-05-23 A. K. Popov

Recent technological advances allowed the coherent optical manipulation of high-energy electron wavepackets with attosecond precision. Here we theoretically investigate the collision of optically-modulated pulsed electron beams with atomic…

Atomic Physics · Physics 2021-04-21 Yuya Morimoto , Peter Hommelhoff , Lars Bojer Madsen

A recent discussion of quantum limitations to the fidelity with which superpositions of internal atomic energy levels can be generated by an applied, quantized, laser pulse is shown to be based on unrealistic physical assumptions. This…

Quantum Physics · Physics 2009-11-07 W. M. Itano

The local interaction of charges and light in organic solids is the basis of distinct and fundamental effects. We here observe, at the single molecule scale, how a focused laser beam can locally shift by hundreds-time their natural…

We study the optomechanically induced amplification and perfect transparency in a double-cavity optomechanical system. We find if two control lasers with appropriate amplitudes and detunings are applied to drive the system, the phenomenon…

Quantum Physics · Physics 2018-03-06 Xiao-Bo Yan , W. Z. Jia , Yong Li , Jin-Hui Wu

We report generation of a new quantum interference effect in spontaneous emission from a resonantly driven system of two identical two-level atoms due to the spatial variation of the laser phase at the positions of the atoms. This…

Quantum Physics · Physics 2008-10-06 Sumanta Das , G. S. Agarwal , Marlan O. Scully

Coherent and reversible mapping of quantum information between light and matter is an important experimental challenge in quantum information science. In particular, it is a decisive milestone for the implementation of quantum networks and…

Quantum Physics · Physics 2010-02-15 Hugues de Riedmatten , Mikael Afzelius , Matthias Staudt , Christoph Simon , Nicolas Gisin

We show that radiative coupling between two multilevel atoms having near-degenerate states can produce new interference effects in spontaneous emission. We explicitly demonstrate this possibility by considering two identical V systems each…

Quantum Physics · Physics 2009-11-06 G. S. Agarwal , Anil K. Patnaik

Quantum information science and intense laser matter interaction are two apparently unrelated fields. Here, we introduce the notion of quantum information theory to intense laser driven processes by providing the quantum mechanical…

Quantum Physics · Physics 2022-12-12 Philipp Stammer

Analytic solutions for steady-state expectation values of atomic quantities and second order correlations are obtained for a fully quantum treatment of two stationary dipole-coupled atoms driven in a standard geometric configuration by a…

Quantum Gases · Physics 2020-02-05 Petra Fersterer , R. J. Ballagh

We demonstrate that laser excitations can coherently induce a novel Kondo effect in ultracold atoms in optical lattices. Using a model of alkaline-earth fermions with two orbitals, it is shown that the optically coupled two internal states…

Quantum Gases · Physics 2015-10-20 Masaya Nakagawa , Norio Kawakami

It is shown that two fundamentally different phenomena, the bound states in continuum and the spectral singularity (or time-reversed spectral singularity), can occur simultaneously. This can be achieved, in particular, in a rectangular core…

Optics · Physics 2018-02-02 Bikashkali Midya , Vladimir V. Konotop

Genuine quantum interference between independent nonlinear processes of different order provides a route to coherent control that cannot be reduced to a classical field interference. Here we present an all-optical analogue of coherent…

Optics · Physics 2026-01-27 Alessia Stefano , Samuel E. Fontaine , J. E. Sipe , Marco Liscidini

We study the spontaneous emission, the absorption and dispersion properties of a ${\bf \Lambda}$-type atom where one transition interacts near resonantly with a double-band photonic crystal. Assuming an isotropic dispersion relation near…

Quantum Physics · Physics 2009-11-06 D. G. Angelakis , E. Paspalakis , P. L. Knight