Scheme for the implementation of a universal quantum cloning machine via cavity-assisted atomic collisions in cavity QED

Details Scheme for the implementation of a universal quantum cloning machine via cavity-assisted atomic collisions in cavity QED Scheme for the implementation of a universal quantum cloning machine via cavity-assisted atomic collisions in cavity QED

2003-01-08

arxiv.org/abs/quant-ph/0301029v1

Physics

Quantum Physics

to appear in PRA

Scientific paper

10.1103/PhysRevA.67.024304

We propose a scheme to implement the $1\to2$ universal quantum cloning machine of Buzek et.al [Phys. Rev.A 54, 1844(1996)] in the context of cavity QED. The scheme requires cavity-assisted collision processes between atoms, which cross through nonresonant cavity fields in the vacuum states. The cavity fields are only virtually excited to face the decoherence problem. That's why the requirements on the cavity quality factor can be loosened.

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