Conditional Quantum Dynamics and Logic Gates

Details Conditional Quantum Dynamics and Logic Gates Conditional Quantum Dynamics and Logic Gates

1995-03-24

arxiv.org/abs/quant-ph/9503017v1

Phys.Rev.Lett. 74 (1995) 4083-4086

Physics

Quantum Physics

5 pages, RevTeX, two figures in a uuencoded, compressed file

Scientific paper

10.1103/PhysRevLett.74.4083

Quantum logic gates provide fundamental examples of conditional quantum dynamics. They could form the building blocks of general quantum information processing systems which have recently been shown to have many interesting non--classical properties. We describe a simple quantum logic gate, the quantum controlled--NOT, and analyse some of its applications. We discuss two possible physical realisations of the gate; one based on Ramsey atomic interferometry and the other on the selective driving of optical resonances of two subsystems undergoing a dipole--dipole interaction.

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