Control of Decoherence with Simple Chirped Pulses

Debabrata Goswami

Published Aug 13, 2001• 0 citations

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. Typeset using REVTEX 1 Minimizing decoherence is an important challenge towards the realization of quantum computing. Nuclear Magnetic Resonance (NMR) spectroscopy of molecules in liquid phase has become an important approach to quantum computing due to their long decoherence times [1]. But it suffers in terms of scalability to larger number of qubits [2], therefore, alternative approaches are being sought [3]. Optical spectroscopy of molecules and nanoparticles could potentially become a highly scalable approach, but for the intramolecular relaxation

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