Maurer, P. C. and Kucsko, G. and Latta, C. and Jiang, L. and Yao, N. Y. and Bennett, S. D. and Pastawski, F. and Hunger, D. and Chisholm, N. and Markham, M. and Twitchen, D. J. and Cirac, J. I. and Lukin, M. D. (2012) Room-Temperature Quantum Bit Memory Exceeding One Second. Science, 336 (6086). pp. 1283-1286. ISSN 0036-8075 http://resolver.caltech.edu/CaltechAUTHORS:20120622-113010978
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Stable quantum bits, capable both of storing quantum information for macroscopic time scales and of integration inside small portable devices, are an essential building block for an array of potential applications. We demonstrate high-fidelity control of a solid-state qubit, which preserves its polarization for several minutes and features coherence lifetimes exceeding 1 second at room temperature. The qubit consists of a single ^(13)C nuclear spin in the vicinity of a nitrogen-vacancy color center within an isotopically purified diamond crystal. The long qubit memory time was achieved via a technique involving dissipative decoupling of the single nuclear spin from its local environment. The versatility, robustness, and potential scalability of this system may allow for new applications in quantum information science.
|Additional Information:||© 2012 American Association for the Advancement of Science. 14 February 2012; accepted 17 April 2012. We thank F. Jelezko, P. Neumann, J. Wrachtrup, R. Walsworth, A. Zibrov, and P. Hemmer for stimulating discussions and experimental help. This work was supported in part by NSF, the Center for Ultracold Atoms, the Defense Advanced Research Projects Agency (QUEST and QUASAR programs), Air Force Office of Scientific Research (MURI program), Element 6, the Packard Foundation, the European Union (DIAMANT program), a Fulbright Science and Technology Award (P.C.M.), the Swiss National Science Foundation (C.L.), the Sherman Fairchild Foundation, and the National Basic Research Program of China (973 program), grant 2011CBA00300 (2011CBA00301) (L.J.), the Department of Energy (FG02-97ER25308) (Y.Y.N).|
|Group:||Institute for Quantum Information and Matter, IQIM|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||22 Jun 2012 20:15|
|Last Modified:||12 Jul 2012 21:37|
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