Singlet-state creation and universal quantum computation in NMR using a genetic algorithm

Manu, VS and Kumar, Anil (2012) Singlet-state creation and universal quantum computation in NMR using a genetic algorithm. In: PHYSICAL REVIEW A, 86 (2).

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Abstract

The experimental implementation of a quantum algorithm requires the decomposition of unitary operators. Here we treat unitary-operator decomposition as an optimization problem, and use a genetic algorithm-a global-optimization method inspired by nature's evolutionary process-for operator decomposition. We apply this method to NMR quantum information processing, and find a probabilistic way of performing universal quantum computation using global hard pulses. We also demonstrate the efficient creation of the singlet state (a special type of Bell state) directly from thermal equilibrium, using an optimum sequence of pulses.

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW A
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copy right for this article belongs to Amer Physical Soc.USA.
Keywords:	FIELD;DESIGN;OPTIMIZATION;RESONANCE;PULSES
Department/Centre:	Division of Chemical Sciences > NMR Research Centre (Formerly Sophisticated Instruments Facility) Division of Physical & Mathematical Sciences > Physics
Date Deposited:	05 Oct 2012 12:14
Last Modified:	05 Oct 2012 12:14
URI:	http://eprints.iisc.ac.in/id/eprint/45084

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