Coherently manipulating two-qubit quantum information using a pair of simultaneous laser pulses

Details Coherently manipulating two-qubit quantum information using a pair of simultaneous laser pulses Coherently manipulating two-qubit quantum information using a pair of simultaneous laser pulses

2004-11-18

arxiv.org/abs/quant-ph/0411132v2

Europhys. Lett., 65(1), 1 (2004)

Physics

Quantum Physics

Scientific paper

10.1209/epl/i2003-10053-y

Several sequential operations are usually needed for implementing controlled quantum gates and generating entanglement between a pair of quantum bits. Based on the conditional quantum dynamics for a two-ion system beyond the Lamb-Dicke limit, here we propose a theoretical scheme for manipulating two-qubit quantum information, i.e., implementing a universal two-qubit quantum gate and generating a two-qubit entangled state, by using a pair of simultaneous laser pulses. Neither the Lamb-Dicke approximation nor the auxiliary atomic level are required. The experimental realizability of this simple approach is also discussed.

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