Fast Room-Temperature Phase Gate on a Single Nuclear Spin in Diamond

被引：12
作者：
Sangtawesin, S. [1 ]
Brundage, T. O. [1 ]
Petta, J. R. [1 ]
机构：
[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 02期
基金：
美国国家科学基金会;
关键词：
QUANTUM; QUBITS; DECOHERENCE; REGISTER; READOUT; STATES;
D O I：
10.1103/PhysRevLett.113.020506
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Nuclear spins support long lived quantum coherence due to weak coupling to the environment, but are difficult to rapidly control using nuclear magnetic resonance as a result of the small nuclear magnetic moment. We demonstrate a fast similar to 500 ns nuclear spin phase gate on a N-14 nuclear spin qubit intrinsic to a nitrogen-vacancy center in diamond. The phase gate is enabled by the hyperfine interaction and off-resonance driving of electron spin transitions. Repeated applications of the phase gate bang-bang decouple the nuclear spin from the environment, locking the spin state for up to similar to 140 mu s.
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页数：5
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