Far-off resonance conditional phase-shifter using the ac-Stark shift

Details Far-off resonance conditional phase-shifter using the ac-Stark shift Far-off resonance conditional phase-shifter using the ac-Stark shift

2009-01-07

arxiv.org/abs/0901.0742v1

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

We propose a simple technique that achieves a conditional phase shift of pi radians between two weak lasers with energies at the 1000-photon level. The key idea is to set up a V-system with two far-off resonant lasers by coupling the ground state to two excited electronic states. The lasers interact through the ac Stark shift of the ground state and thereby acquire a large conditional phase shift.

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