Selective recoupling and stochastic dynamical decoupling

Details Selective recoupling and stochastic dynamical decoupling Selective recoupling and stochastic dynamical decoupling

2006-02-20

arxiv.org/abs/quant-ph/0602167v1

Phys. Rev. A 73, 062302 (2006)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.73.062302

An embedded selective recoupling method is proposed which is based on the idea of embedding the recently proposed deterministic selective recoupling scheme of Yamaguchi et al. [quant-ph/0411099] into a stochastic dynamical decoupling method, such as the recently proposed Pauli-random-error-correction-(PAREC) scheme [Eur. Phys. J. D 32, 153, quant-ph/0407262]. The recoupling scheme enables the implementation of elementary quantum gates in a quantum information processor by partial suppression of the unwanted interactions. The random dynamical decoupling method cancels a significant part of the residual interactions. Thus the time scale of reliable quantum computation is increased significantly. Numerical simulations are presented for a conditional two-qubit swap gate and for a complex iterative quantum algorithm.

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