Adiabatic entanglement in two-atom cavity QED

Lazarou, C and Garraway, B M (2008) Adiabatic entanglement in two-atom cavity QED. Physical Review A, 77 (2). 023818. ISSN 1050-2947

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We analyze the problem of a single mode field interacting with a pair of two level atoms. The atoms enter and exit the cavity at different times. Instead of using constant coupling, we use time-dependent couplings which represent the spatial dependence of the mode. Although the system evolution is adiabatic for most of the time, a previously unstudied energy crossing plays a key role in the system dynamics when the atoms have a time delay. We show that conditional atom-cavity entanglement can be generated, while for large photon numbers the entangled system has a behavior which can be mapped onto the single atom Jaynes-Cummings model. Exploring the main features of this system we propose simple and fairly robust methods for entangling atoms independently of the cavity, for quantum state mapping, and for implementing SWAP and controlled-NOT (CNOT) gates with atomic qubits.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Constantinos Lazarou
Date Deposited: 06 Feb 2012 19:14
Last Modified: 03 Jul 2019 01:32

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