期刊
SCIENCE
卷 342, 期 6160, 页码 830-833出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1239584
关键词
-
资金
- Natural Sciences and Engineering Research Council of Canada
- Violette and Samuel Glasstone Fellowship
- St. John's College, Oxford
- Royal Society
- EPSRC [EP/K025945/1, EP/I035536/1, EP/I035536/2] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K025945/1, EP/I035536/2, EP/I035536/1] Funding Source: researchfish
Quantum memories capable of storing and retrieving coherent information for extended times at room temperature would enable a host of new technologies. Electron and nuclear spin qubits using shallow neutral donors in semiconductors have been studied extensively but are limited to low temperatures (less than or similar to 10 kelvin); however, the nuclear spins of ionized donors have the potential for high-temperature operation. We used optical methods and dynamical decoupling to realize this potential for an ensemble of phosphorous-31 donors in isotopically purified silicon-28 and observed a room-temperature coherence time of over 39 minutes. We further showed that a coherent spin superposition can be cycled from 4.2 kelvin to room temperature and back, and we report a cryogenic coherence time of 3 hours in the same system.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据