alexa Approximate quantum Fourier transform and decoherence
Mathematics

Mathematics

Journal of Physical Mathematics

Author(s): Adriano Barenco, Artur Eker, KalleAntti Suominen, Pivi Trm

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We discuss the advantages of using the approximate quantum Fourier transform (AQFT) in algorithms which involve periodicity estimations. We analyze quantum networks performing AQFT in the presence of decoherence and show that extensive approximations can be made before the accuracy of AQFT (as compared with regular quantum Fourier transform) is compromised. We show that for some computations an approximation may imply a better performance. © 1996 The American Physical Society.

This article was published in Physical Review A and referenced in Journal of Physical Mathematics

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