Volume 126, Number 3, May 2019
|Number of page(s)||7|
|Published online||29 May 2019|
Auxiliary-qubit-driving–induced entanglement and logic gate
1 School of Physics and Engineering, Zhengzhou University - Zhengzhou 450001, China
2 Department of Physics, Harbin Institute of Technology - Harbin 150001, China
Received: 22 April 2019
Accepted: 15 May 2019
A one-step scheme to remotely create a two-atom Einstein-Podolsky-Rosen (EPR) entangled state and a quantum logic gate via exchanging the virtual photon is proposed. Two systematic atoms require no laser driving but get entangled, while the state of the auxiliary atom requiring laser driving always remains invariant. The scheme may have applications in the remote quantum information processing (QIP) tasks and quantum computation. The robustness against decoherence is demonstrated numerically and discussed in theory. In addition, the experimental issues and improvement of the scheme are also discussed.
PACS: 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) / 03.67.Lx – Quantum computation architectures and implementations / 03.67.Mn – Entanglement measures, witnesses, and other characterizations
© EPLA, 2019
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