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We show that coherent control of the steady-state long-distance entanglement between pairs of cavity-atom systems in an array of lossy and driven coupled resonators is possible. The cavities are doped with atoms and are connected through…

Quantum Physics · Physics 2010-08-27 Dimitris G. Angelakis , Li Dai , Leong-Chuan Kwek

We experimentally perform the simulation of open quantum dynamics in single-qudit systems. Using a spatial light modulator as a dissipative optical device, we implement dissipative-dynamical maps onto qudits encoded in the transverse…

Quantum Physics · Physics 2015-11-10 B. Marques , A. A. Matoso , W. M. Pimenta , A. J. Gutiérrez-Esparza , M. F. Santos , S. Pádua

Multiparticle entanglement is of great significance for quantum metrology and quantum information processing. We here present an efficient scheme to generate stable multiparticle entanglement in a solid state setup, where an array of…

Quantum Physics · Physics 2020-04-22 Yi-Fan Qiao , Hong-Zhen Li , Xing-Liang Dong , Jia-Qiang Chen , Yuan Zhou , Peng-Bo Li

We discuss the generation of entangled states of two two-level atoms inside an optical resonator. When the cavity decay is continuously monitored, the absence of photon-counts is associated with the presence of an atomic entangled state. In…

Quantum Physics · Physics 2009-10-31 M. B. Plenio , S. F. Huelga , A. Beige , P. L. Knight

An excited emitter decays by radiating a photon into a quantized mode of the electromagnetic field, a process known as spontaneous emission. If the emitter is driven to a higher excited state, it radiates multiple photons in a cascade…

The current study is motivated by a difficulty to reconcile between particle number conservation and superconductivity. An alternative modeling, which is based on the hypothesis that disentanglement spontaneously ocuurs in quantum systems,…

Quantum Physics · Physics 2025-05-28 Eyal Buks

We propose a protocol for generating multi-particle entangled states using coherent manipulation of atoms trapped in an optical cavity. We show how entanglement can be adiabatically produced with two control beams and by exploiting…

Quantum Physics · Physics 2023-05-31 Rahul Sawant

We propose a scheme to unconditionally entangle the internal states of atoms trapped in separate high finesse optical cavities. The scheme uses the technique of quantum reservoir engineering in a cascaded cavity QED setting, and for ideal…

Quantum Physics · Physics 2009-11-10 Stephen Clark , Amy Peng , Mile Gu , Scott Parkins

Quantum entanglement of mechanical systems emerges when distinct objects move with such a high degree of correlation that they can no longer be described separately. Although quantum mechanics presumably applies to objects of all sizes,…

We show that entanglement between two solitary qubits in quasi-one-dimensional Bose-Einstein condensates can be spontaneously generated due to quantum fluctuations. Recently we have shown that dark solitons are an appealing platform for…

Quantum Physics · Physics 2019-04-24 Muzzamal I. Shaukat , Eduardo. V. Castro , Hugo Terças

Within the frame of quantum optics we analyze the properties of spontaneous emission of two-level atom in media with indefinite permittivity tensor where the geometry of the dispersion relation is characterized by an ellipsoid or a…

Optics · Physics 2012-03-06 Zheng Liu , Wei Li , Xunya Jiang

We study the physics of ultracold dipolar bosons in optical lattices. We show that dipole-dipole interactions lead to the appearance of many insulating metastable states. We study the stability and lifetime of these states using a…

Other Condensed Matter · Physics 2010-08-10 C. Trefzger , C. Menotti , M. Lewenstein

We consider a system comprising two groups of quantum dimers placed in a common electromagnetic cavity, and controlled by selectively applying a static external potential to one of the groups. We show that in the regime of deep strong…

Mesoscale and Nanoscale Physics · Physics 2023-08-21 Andrey Kudlis , Denis Novokreschenov , Ivan Iorsh , Ilya Tokatly

The radiation pressure induced coupling between an optical cavity field and a mechanical oscillator can create entanglement between them. In previous works this entanglement was treated as that of the quantum fluctuations of the cavity and…

Quantum Physics · Physics 2014-08-14 Qing Lin , Bing He , R. Ghobadi , Christoph Simon

We propose the implementation of a light source, which can deterministically generate a rich variety of multi-mode quantum states. The desired states are encoded in the collective population of different ground hyperfine states of an atomic…

Quantum Physics · Physics 2010-04-16 Anne E. B. Nielsen , Klaus Mølmer

We consider a pair of three - level atoms interacting with a common vacuum and analyze the process of entanglement production due to spontaneous emission. We show that in the case of closely separated atoms, collective damping can generate…

Quantum Physics · Physics 2009-11-13 L. Derkacz , L. Jakobczyk

In contrast to the general argument that the spontaneous decay is intrinsically incoherent in nature and detrimental to quantum entanglement, here, we show that nearly perfect entanglement between two bright pump fields can be realized via…

Quantum Physics · Physics 2025-05-05 Xihua Yang , Mingfei Cheng , Xiaodong Zeng , Zhenghong Li , Min Xiao

For two two-level atoms coupled to a single-mode cavity field that is driven and heavily damped, the steady-state can be entangled by shining an un-modulated driving laser on the system [S.Schneider, G. J. Milburn Phys. Rev A 65, 042107,…

Quantum Physics · Physics 2009-11-10 Jin Wang , H. M. Wiseman , G. J. Milburn

Spontaneous decay of an excited atomic state is a fundamental process that originates from the interaction between matter and vacuum modes of the electromagnetic field. The rate of decay can thus be engineered by modifying the density of…

Entanglement between macroscopically populated states can easily be created by combining a single photon and a bright coherent state on a beam-splitter. Motivated by the simplicity of this technique, we report on a method using displacement…