Laser phase modulation approaches towards ensemble quantum computing

Details Laser phase modulation approaches towards ensemble quantum computing Laser phase modulation approaches towards ensemble quantum computing

2001-08-13

arxiv.org/abs/quant-ph/0108061v2

Physics

Quantum Physics

10 pages, 4 figures, PRL (accepted)

Scientific paper

10.1103/PhysRevLett.88.177901

Selective control of decoherence is demonstrated for a multilevel system by generalizing the instantaneous phase of any chirped pulse as individual terms of a Taylor series expansion. In the case of a simple two-level system, all odd terms in the series lead to population inversion while the even terms lead to self-induced transparency. These results also hold for multiphoton transitions that do not have any lower-order photon resonance or any intermediate virtual state dynamics within the laser pulse-width. Such results form the basis of a robustly implementable CNOT gate.

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