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We propose a method to implement cavity QED and quantum information processing in high-Q cavities with a single trapped but non-localized atom. The system is beyond the Lamb-Dick limit due to the atomic thermal motion. Our method is based…

Quantum Physics · Physics 2009-11-07 L. -M. Duan , A. Kuzmich , H. J. Kimble

We investigate the relationship between stability, adiabaticity and transfer efficiency in a \Lambda-type atom-molecule coupling system via a nonlinear stimulated Raman adiabatic passage. We find that only when the pump and control lasers…

Quantum Physics · Physics 2011-12-19 Ning Jia , Jing Qian , Guangjiong Dong , Weiping Zhang

We study electromagnetically induced interference at superconducting qubits. The interaction between qubits and electromagnetic fields can provide additional coupling channels to qubit states, leading to quantum interference in a microwave…

Quantum Physics · Physics 2013-06-04 Lingjie Du , Yang Yu

We experimentally study a circuit quantum acoustodynamics system, which consists of a superconducting artificial atom, coupled to both a two-dimensional surface acoustic wave resonator and a one-dimensional microwave transmission line. The…

We show how the dynamics of collisions between cold atoms can be manipulated by a modification of spontaneous emission times. This is achieved by placing the atomic sample in a resonant optical cavity. Spontaneous emission is enhanced by a…

Quantum Physics · Physics 2007-05-23 J. I. Kim , R. B. B. Santos , P. Nussenzveig.

The dynamics of a vibronic system in a lossy two-mode cavity is studied, with the first mode being resonant to the electronic transition and the second one being nearly resonant due to Raman transitions. We derive analytical solutions for…

Quantum Physics · Physics 2011-06-13 P. Grünwald , S. K. Singh , W. Vogel

Hybrid quantum systems consisting of an ensemble of two--level systems interacting with a single--mode electromagnetic field are important for the development of quantum information processors and other quantum devices. These systems are…

Quantum Physics · Physics 2022-01-04 Andrew Stasiuk , Lane G. Gunderman , Mohamed El Mandouh , Troy W. Borneman , David G. Cory

Cavity quantum electrodynamics systems using atoms in resonant optical cavities are central elements of many applications such as quantum networks and quantum-enhanced sensing. We present a novel experimental setup that achieves strong…

Atomic Physics · Physics 2025-03-25 T. Olney , V. Naniyil , V. Boyer , J. Goldwin , A. B. Deb

We realize a device allowing for tunable and switchable coupling between two superconducting resonators mediated by an artificial atom. For the latter, we utilize a persistent current flux qubit. We characterize the tunable and switchable…

We propose to implement tunable interaction of superconducting flux qubits with cavity-assisted interaction and strong driving. The qubits have a three-level Lambda configuration, and the decay of the excited state will be greatly…

Quantum Physics · Physics 2016-01-26 Zheng-Yuan Xue , Ya-Fei Li , Jian Zhou , Yu-Mei Gao , Gang Zhang

We consider the superradiant transition of a generalized Tavis-Cummings model, where a number of two-level qubits are coupled to a dissipative cavity. The cavity is coherently driven through a parametric medium, and all-to-all interactions…

Quantum Gases · Physics 2025-09-03 Wen-Jie Geng , Yiwen Han , Wei Yi

We investigate atomic chains with different spatial configurations coupled to a ring cavity comprising two counterpropagating traveling modes. We describe the collective atom-light scattering effect with a structure factor of the atomic…

Quantum Physics · Physics 2024-04-22 Xinwei Li , Yijia Zhou , Hao Zhang

We show how a pair of superconducting qubits coupled to a microwave cavity mode can be used to engineer a single-atom laser that emits light into a non-classical state. Our scheme relies on the dressing of the qubit-field coupling by…

Quantum Physics · Physics 2014-11-11 Carlos Navarrete-Benlloch , Juan José García-Ripoll , Diego Porras

Vibronic coupling effects usually manifest themselves in molecules and crystals rather than in an unbound atoms. We theoretically demonstrate the existence of vibronic states in a moving two-level atom exposed to a strong electromagnetic…

Quantum Physics · Physics 2020-10-28 Andrei Ivanov , Evgeniy Perlin

The coherent process that a single photon simultaneously excites two qubits has recently been theoretically predicted by [https://link.aps.org/doi/10.1103/PhysRevLett.117.043601 {Phys. Rev. Lett. 117, 043601 (2016)}]. We propose a different…

Quantum Physics · Physics 2017-12-20 Xin Wang , Adam Miranowicz , Hong-Rong Li , Franco Nori

By adiabatically manipulating tunneling amplitudes of cold atoms in a periodic potential with a multiple sublattice structure, we are able to coherently transfer atoms from a sublattice to another without populating the intermediate…

Quantum Gases · Physics 2020-01-20 Shintaro Taie , Tomohiro Ichinose , Hideki Ozawa , Yoshiro Takahashi

We propose a realizable architecture using one-dimensional transmission line resonators to reach the strong coupling limit of cavity quantum electrodynamics in superconducting electrical circuits. The vacuum Rabi frequency for the coupling…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Alexandre Blais , Ren-Shou Huang , Andreas Wallraff , S. M. Girvin , R. J. Schoelkopf

We revisit the topic of atomic center of mass motion of a three level atom Raman coupled strongly to an external laser field and the quantum field of a high Q optical cavity. We focus on the motion related nonadiabatic effects of the atomic…

Quantum Physics · Physics 2009-11-10 P. Zhang , Y. Li , C. P. Sun , L. You

We explore the dynamics and the steady state of a driven quantum spin coupled to a bath of fermions, which can be realized with a strongly imbalanced mixture of ultracold atoms using currently available experimental tools. Radio-frequency…

Quantum Gases · Physics 2014-01-06 Michael Knap , Dmitry A. Abanin , Eugene Demler

We study the Lamb shift of both freely-falling and static two-level atoms in interaction with quantized conformally coupled massless scalar fields in the de Sitter-invariant vacuum. We find that the Lamb shifts of both freely-falling and…

High Energy Physics - Theory · Physics 2011-01-28 Wenting Zhou , Hongwei Yu
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