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Within the framework of exact quantum electrodynamics in dispersing and absorbing media, we have studied the quantum state of the radiation emitted from an initially in the upper state prepared two-level atom in a high-$Q$ cavity, including…

Quantum Physics · Physics 2009-11-13 M. Khanbekyan , D. -G. Welsch , C. Di Fidio , W. Vogel

In this paper we analyze the behavior of quantum random walks. In particular we present several new results for the absorption probabilities in systems with both one and two absorbing walls for the one-dimensional case. We compute these…

Quantum Physics · Physics 2007-05-23 Eric Bach , Susan Coppersmith , Marcel Paz Goldschen , Robert Joynt , John Watrous

We use a non-Markovian master equation to describe the transport of Coulomb interacting electrons through an electromagnetic cavity with one quantized photon mode. The central system is a finite parabolic quantum wire that is coupled weakly…

Mesoscale and Nanoscale Physics · Physics 2012-03-15 Vidar Gudmundsson , Olafur Jonasson , Chi-Shung Tang , Hsi-Sheng Goan , Andrei Manolescu

Understanding the interaction between cavity photons and electronic nanocircuits is crucial for the development of Mesoscopic Quantum Electrodynamics (QED). One has to combine ingredients from atomic Cavity QED, like orbital degrees of…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Audrey Cottet , Takis Kontos , Benoit Douçot

Intra and intersubband scattering rates and electron capture rates are considered when mediated by hybrid optical phonons in an AlAs/GaAs/AlAs double heterostructure confined between two outer metallic barriers. In evaluating scattering…

Mesoscale and Nanoscale Physics · Physics 2010-03-24 V. N. Stavrou , C. R. Bennett , O. M. M. Al-Dossary , M. Babiker

We propose a setup for quantum memory based on a single two-level atom in a half cavity with a moving mirror. We show that various temporal shapes of incident photon can be efficiently stored and readout by shaping the time-dependent decay…

Quantum Physics · Physics 2013-05-30 Yimin Wang , Jiří Minář , Gabriel Hétet , Valerio Scarani

We investigate atom-photon entangling gates based on cavity quantum electrodynamics (QED) for a finite photon-pulse duration, where not only the photon loss but also the temporal mode-mismatch of the photon pulse becomes a severe source of…

Quantum Physics · Physics 2025-01-22 Takeru Utsugi , Rui Asaoka , Yuuki Tokunaga , Takao Aoki

We investigate the time evolution of the photon-detection probability at various output ports of an all-fiber coupled cavity-quantum-electrodynamics (cavity-QED) system. The setup consists of two atoms trapped separately in the field of two…

Quantum Physics · Physics 2019-08-23 Ross Shillito , Nikolett Német , Scott Parkins

We consider effects of motion in cavity quantum electrodynamics experiments where single cold atoms can now be observed inside the cavity for many Rabi cycles. We discuss the timescales involved in the problem and the need for good control…

Quantum Physics · Physics 2009-10-31 A. C. Doherty , A. S. Parkins , S. M. Tan , D. F. Walls

Leveraging the quantum information processing ability of superconducting circuits and long-distance distribution ability of optical photons promises the realization of complex and large-scale quantum networks. In such a scheme, a coherent…

We study cavity quantum electrodynamics of Bose-condensed atoms that are subjected to continuous monitoring of the light leaking out of the cavity. Due to a given detection record of each stochastic realization, individual runs…

Quantum Physics · Physics 2015-11-02 Mark D. Lee , Janne Ruostekoski

Cavity quantum electrodynamics describes the fundamental interactions between light and matter, and how they can be controlled by shaping the local environment. For example, optical microcavities allow high-efficiency detection and…

Quantum Physics · Physics 2011-09-15 J. Goldwin , M. Trupke , J. Kenner , A. Ratnapala , E. A. Hinds

We explore the quantum dynamics of photoassociation of Bose-Einstein condensed atoms into molecules using an optical cavity field. Inside of an optical resonator, photoassociation of quantum degenerate atoms involves the interaction of…

Quantum Gases · Physics 2015-05-13 Christopher P. Search , J. Mauricio Campuzano , Marko Zivkovic

We propose a driven optical cavity quantum electrodynamics (QED) set up aimed at directly probing energy transport dynamics in photosynthetic biomolecules. We show that detailed information concerning energy transfer paths and…

The impact of the leading quantum gravity effects on the dynamics of the Hawking evaporation process of a black hole is investigated. Its spacetime structure is described by a renormalization group improved Vaidya metric. Its event horizon,…

High Energy Physics - Theory · Physics 2008-11-26 A. Bonanno , M. Reuter

The mechanism of extraction of information stored in a quantum memory is studied here in detail. We consider memories containing a single excitation of a collective atomic state, which is mapped into a single photon during the reading…

Quantum Physics · Physics 2013-09-16 Milrian S. Mendes , Pablo L. Saldanha , José W. R. Tabosa , Daniel Felinto

We give a quantum circuit interpretation of evaporating black hole geometry. We make an analogy between the appearance of island for evaporating black hole and the transition from two-sided to one-sided black hole in the familiar example of…

High Energy Physics - Theory · Physics 2020-08-11 Ying Zhao

Cavity quantum electrodynamics (QED), the study of the interaction between quantized emitters and photons confined in an optical cavity, is an important tool for quantum science in computing, networking, and synthetic matter. In atomic…

Cavity electrodynamics is emerging as a promising tool to control chemical processes and quantum material properties. In this work we develop a formalism to describe the cavity mediated energy exchange between a material and its…

Optics · Physics 2024-03-05 Francesca Fassioli , Jerome Faist , Martin Eckstein , Daniele Fausti

Effective models to describe the dynamics of an open cavity have been extensively discussed in the literature. In many of these models the cavity leakage to the outside is treated as a loss introduced phenomenologically. In contrast to…

Quantum Physics · Physics 2024-10-10 Astghik Saharyan , Juan-Rafael Álvarez , Axel Kuhn , Stéphane Guérin