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We consider a cavity field state, which is created by the atom-cavity field's interaction in the presence of a driven field. The two-level atom passes through the cavity and is driven by a weak classical field. A photon number dependent…

Quantum Physics · Physics 2024-04-29 Naveen Kumar , Arpita Chatterjee

A method for generating entangled cat states of two modes of a microwave cavity field is proposed. Entanglement results from the interaction of the field with a beam of atoms crossing the microwave resonator, giving rise to non-unitary…

Quantum Physics · Physics 2015-06-15 Christian Arenz , Cecilia Cormick , David Vitali , Giovanna Morigi

We consider the interaction of two level ultracold atoms resonant with a sinusoidal mode of the electromagnetic field in a high Q cavity. We found that well resolved resonances appear in the transmission coefficients even for actual…

Quantum Physics · Physics 2009-10-31 J. C. Retamal , E. Solano , N. Zagury

It is shown that two circularly polarised Alfv\'en waves that propagate along the ambient magnetic field in an uniform plasma trigger non oscillating electromagnetic field components when they cross each other. The non-oscilliating field…

Earth and Planetary Astrophysics · Physics 2019-02-20 Fabrice Mottez

One-electron energy levels are studied for a configuration of two positive charges inside an octahedral cage, the vertices of the cage being occupied by atoms with a partially filled shell. Although ground states correspond to large…

Quantum Physics · Physics 2007-05-23 R. Vilela Mendes

In the Coulomb field of nucleus cut off on it size, besides usual atomic states, there are additional ones. These anomalous states are deep (in the range of $10\,MeV$) in the Dirac sea and can exist solely during a macroscopic acceleration…

General Physics · Physics 2024-01-18 B. Ivlev

Subradiance, i.e. the cooperative inhibition of spontaneous emission by destructive interatomic interference, can be realized in a cold atomic sample confined in a ring cavity and lightened by a two-frequency laser. The atoms, scattering…

Other Condensed Matter · Physics 2015-05-13 M. M. Cola , D. Bigerni , N. Piovella

The notion of broadcasting is extended to include the case where an arbitrary input density state of a two-mode radiation field gives rise to an output state with identical marginal states for the respective modes, albeit different from the…

Quantum Physics · Physics 2007-05-23 Moorad Alexanian

A free electron can temporarily gain a very significant amount of energy if it is overrun by an intense electromagnetic wave. In principle, this process would permit large enhancements in the center-of-mass energy of electron-electron,…

Accelerator Physics · Physics 2011-05-12 Kirk T. McDonald , Konstantine Shmakov

We demonstrate quantum bath engineering for a superconducting artificial atom coupled to a microwave cavity. By tailoring the spectrum of microwave photon shot noise in the cavity, we create a dissipative environment that autonomously…

Quantum Physics · Physics 2013-05-30 K. W. Murch , U. Vool , D. Zhou , S. J. Weber , S. M. Girvin , I. Siddiqi

Moving cavities promise to be a suitable system for relativistic quantum information processing. It has been shown that an inertial and a uniformly accelerated one-dimensional cavity can become entangled by letting an atom emit an…

Quantum Physics · Physics 2016-01-29 Bartosz Regula , Antony R. Lee , Andrzej Dragan , Ivette Fuentes

We report a study of the quantum dot emission in short photonic crystal waveguides. We observe that the quantum dot photoluminescence intensity and decay rate are strongly enhanced when the emission energy is in resonance with Fabry-Perot…

In this paper we investigate the ground-state properties and related quantum phase transitions for the two-component Bose-Einstein condensate in a single-mode optical cavity. Apart from the usual normal and superradiant phases multi-stable…

Quantum Gases · Physics 2017-04-26 Xiuqin Zhao , Ni Liu , J-Q Liang

We investigate steady state entanglement in an open quantum system, specifically a single atom in a driven optical cavity with cavity loss and spontaneous emission. The system reaches a steady pure state when driven very weakly. Under these…

Quantum Physics · Physics 2009-11-13 P. R. Rice , J. Gea-Banacloche , M. L. Terraciano , D. L. Freimund , L. A. Orozco

We present protocols for creating entangled states of two modes of the electromagnetic field, by using a beam of atoms crossing microwave resonators. The atoms are driven by a transverse, classical field and pump correlated photons into (i)…

Quantum Physics · Physics 2015-05-18 Susanne Pielawa , Luiz Davidovich , David Vitali , Giovanna Morigi

A scheme of generating recently introduced fan-states | \alpha, 2k>_F (\alpha is complex, k=1,2,3,...) is proposed basing on a \Lambda-type atom-cavity field interaction. We show that with suitable atomic preparations and measurements a…

Quantum Physics · Physics 2007-05-23 Nguyen Ba An , Truong Minh Duc

We investigate the interaction of two two-level qubits with a single mode quantum field in a cavity without rotating wave approximation and considering that qubits can be located at an arbitrary distance from each other. We demonstrate that…

Quantum Physics · Physics 2020-10-14 I. D. Feranchuk , N. Q. San , A. U. Leonau , O. D. Skoromnik

The radiative acceleration of particles and the electrostatic potential fields that arise in low density plasmas hit by radiation produced by a transient, compact source are investigated. We calculate the dynamical evolution and asymptotic…

Astrophysics · Physics 2009-11-07 L. Zampieri , R. Turolla , L. Foschini , A. Treves

The striking nonlinear effects exhibited by cavity QED systems make them a powerful tool in modern condensed matter and atomic physics. A recently discovered example is the quantized pumping of energy into a cavity by a strongly-coupled,…

Quantum Physics · Physics 2022-05-05 David M. Long , Philip J. D. Crowley , Alicia J. Kollár , Anushya Chandran

We develop a general technique to analyse the quantum effects of acceleration on realistic spatially-localised electromagnetic field states entangled in the polarization degree of freedom. We show that for this setting, quantum entanglement…

Quantum Physics · Physics 2012-08-21 Miguel Montero , Marco del Rey , Eduardo Martin-Martinez