A Decoherence-Free Quantum Memory Using Trapped Ions-Reference-Cited by-同舟云学术

A Decoherence-Free Quantum Memory Using Trapped Ions

Published:2001-02-09 Issue:5506 Volume:291 Page:1013-1015
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kielpinski D.¹,Meyer V.¹,Rowe M. A.¹,Sackett C. A.¹,Itano W. M.¹,Monroe C.²,Wineland D. J.¹

Affiliation:

1. Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO 80305, USA.

2. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA.

Abstract

We demonstrate a decoherence-free quantum memory of one qubit. By encoding the qubit into the decoherence-free subspace (DFS) of a pair of trapped 9 Be + ions, we protect the qubit from environment-induced dephasing that limits the storage time of a qubit composed of a single ion. We measured the storage time under ambient conditions and under interaction with an engineered noisy environment and observed that encoding into the DFS increases the storage time by up to an order of magnitude. The encoding reversibly transfers an arbitrary qubit stored in a single ion to the DFS of two ions.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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