Experimental application of decoherence-free subspaces in a quantum-computing algorithm
量子物理
2009-11-07 v1
摘要
For a practical quantum computer to operate, it will be essential to properly manage decoherence. One important technique for doing this is the use of "decoherence-free subspaces" (DFSs), which have recently been demonstrated. Here we present the first use of DFSs to improve the performance of a quantum algorithm. An optical implementation of the Deutsch-Jozsa algorithm can be made insensitive to a particular class of phase noise by encoding information in the appropriate subspaces; we observe a reduction of the error rate from 35% to essentially its pre-noise value of 8%.
引用
@article{arxiv.quant-ph/0212134,
title = {Experimental application of decoherence-free subspaces in a quantum-computing algorithm},
author = {Masoud Mohseni and Jeffrey S. Lundeen and Kevin J. Resch and Aephraim M. Steinberg},
journal= {arXiv preprint arXiv:quant-ph/0212134},
year = {2009}
}
备注
11 pages, 4 figures, submitted to PRL