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Laser phase modulation approaches towards ensemble quantum computing

Debabrata Goswami
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Abstract

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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Debabrata Goswami. 2002-03-13. Laser phase modulation approaches towards ensemble quantum computing. https://doi.org/10.1103/physrevlett.88.177901

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