Journal
SCIENCE
Volume 336, Issue 6086, Pages 1283-1286Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1220513
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Funding
- NSF
- Center for Ultracold Atoms
- Defense Advanced Research Projects Agency (QUEST)
- Air Force Office of Scientific Research (MURI)
- Element 6
- Packard Foundation
- European Union (DIAMANT)
- Fulbright Science and Technology Award
- Swiss National Science Foundation
- Sherman Fairchild Foundation
- National Basic Research Program of China (973 program) [2011CBA00300 (2011CBA00301)]
- Department of Energy [FG02-97ER25308]
- Defense Advanced Research Projects Agency (QUASAR)
- Direct For Mathematical & Physical Scien
- Division Of Physics [969816] Funding Source: National Science Foundation
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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 C-13 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.
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