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In this paper we study controllability of a $d$-level atom interacting with the electromagnetic field in a cavity. The system is modelled by an ordered graph $\Gamma$. The vertices of $\Gamma$ describe the energy levels and the edges…

量子物理 · 物理学 2017-12-21 Thomas Hofmann , Michael Keyl

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…

量子气体 · 物理学 2020-02-05 Petra Fersterer , R. J. Ballagh

We study the dynamics of a micromaser where the pumping atoms are strongly driven by a resonant classical field during their transit through the cavity mode. We derive a master equation for this strongly-driven micromaser, involving the…

量子物理 · 物理学 2009-11-10 P. Lougovski , F. Casagrande , A. Lulli , B. -G. Englert , E. Solano , H. Walther

A detailed derivation of the master equation of the cavity radiation of a coherently prepared $Y$-shaped four-level correlated emission laser is presented. The outline of the procedures that can be employed in analytically solving the…

量子物理 · 物理学 2015-05-28 Sintayehu Tesfa

The coherent control of multi-partite quantum systems presents one of the central prerequisites in state-of-the-art quantum information processing. With the added benefit of inherent high-fidelity detection capability, atomic quantum…

量子物理 · 物理学 2022-12-07 Jan Schütz , Alexander Martin , Sanah Laschinger , Gerhard Birkl

We study the quantum dynamics of an ultracold atomic gas in a deep optical lattice within an optical high-$Q$ resonator. The atoms are coherently illuminated with the cavity resonance tuned to a blue vibrational sideband, so that photon…

量子物理 · 物理学 2007-12-18 Thomas Salzburger , Helmut Ritsch

The cause of decoherence in a quantum system can be traced back to the interaction with the environment. As it has been pointed out first by Dicke, in a system of N two-level atoms where each of the atoms is individually dipole coupled to…

量子物理 · 物理学 2009-11-07 Peter Foldi , Mihaly G. Benedict , Attila Czirjak

We study the scattering of two-level atoms at narrow laser fields, modeled by a $\delta$-shape intensity profile. The unique properties of these potentials allow us to give simple analytic solutions for one or two field zones. Several…

量子物理 · 物理学 2009-11-13 D. Seidel , J. G. Muga , G. C. Hegerfeldt

The implementation of a three-level Lambda System in artificial atoms would allow to perform advanced control tasks typical of quantum optics in the solid state realm, with photons in the $\mathrm{\mu m}$/mm range. However hardware…

量子物理 · 物理学 2015-03-05 P. G. Di Stefano , E. Paladino , A. D'Arrigo , B. Spagnolo , G. Falci

We present new photonics and electronics packages recently developed by M Squared Lasers specifically tailored for scalable neutral atom quantum computing; a high power 1064 nm system for scalable qubit number, a phase locked system for…

We investigate the optical detection of single atoms held in a microscopic atom trap close to a surface. Laser light is guided by optical fibers or optical micro-structures via the atom to a photo-detector. Our results suggest that with…

We study the coherence properties of an atom laser, which operates by extracting atoms from a gaseous Bose-Einstein condensate via a two-photon Raman process, by analyzing a recent experiment. We obtain good agreement with the experimental…

凝聚态物理 · 物理学 2009-10-31 M. Trippenbach , Y. B. Band , M. Edwards , M. Doery , P. S. Julienne

We consider a single Rydberg atom having two degenerate levels interacting with the radiation field in a single-mode ideal cavity. The transition between the levels is carried out by a $\Lambda$-type degenerate two-photon process via a…

atom-ph · 物理学 2008-02-03 N. Nayak , S. S. Hassan , T. Biswas

Cavity-mediated cooling of the center--of--mass motion of a transversally, coherently pumped atom along the axis of a high--Q cavity is studied. The internal dynamics of the atomic dipole strongly coupled to the cavity field is treated by a…

量子物理 · 物理学 2007-05-23 Peter Domokos , Thomas Salzburger , Helmut Ritsch

Recently, intensely driven laser-matter interactions have been used to connect the fields of strong laser field physics with quantum optics by generating non-classical states of light. Here, we make a further key step and show the potential…

We consider a system composed of a single artificial atom coupled to a cavity mode. The artificial atom is biased such that the most dominant relaxation process in the system takes the atom from its ground state to its excited state, thus…

超导电性 · 物理学 2009-02-18 S. Ashhab , J. R. Johansson , A. M. Zagoskin , Franco Nori

A coupled array of $N$ identical cavities, each of which contains a five-level atom is investigated. The results show that the atoms via the exchange of virtual photons can be effectively equal to spin 1 Heisenberg model under certain…

量子物理 · 物理学 2015-05-13 Ling Zhou , Wei Bin Yan , Xin Yu Zhao

Observation of internal quantum dynamics relies on correlations between the system being observed and the measurement apparatus. We propose using the center-of-mass (c.m.) degrees of freedom of atoms and molecules as a "built-in" monitoring…

原子物理 · 物理学 2020-07-01 A. W. Bray , U. Eichmann , S. Patchkovskii

We introduce a complete Bell measurement on atomic qubits based on two photon interactions with optical cavities and discrimination of coherent states of light. The dynamical system is described by the Dicke model for two three-level atoms…

量子物理 · 物理学 2019-02-27 Carlos A. González-Gutiérrez , Juan Mauricio Torres

Based on a plausible requirement for the ground state density, we introduce a novel one-dimensional (1D) atomic model potential for the 1D simulation of the quantum dynamics of a single active electron atom driven by a strong, linearly…

原子物理 · 物理学 2018-08-08 Szilárd Majorosi , Mihály G. Benedict , Attila Czirják