Charge state manipulation of qubits in diamond

被引：193

作者：

Grotz, Bernhard ^{[1
,2
]}

Hauf, Moritz V. ^{[3
]}

Dankerl, Markus ^{[3
]}

Naydenov, Boris ^{[5
]}

Pezzagna, Sebastien ^{[4
]}

Meijer, Jan ^{[4
]}

Jelezko, Fedor ^{[5
]}

Wrachtrup, Joerg ^{[1
,2
]}

Stutzmann, Martin ^{[3
]}

Reinhard, Friedemann ^{[1
,2
]}

Garrido, Jose A. ^{[3
]}

机构：

[1] Univ Stuttgart, Inst Phys 3, D-70550 Stuttgart, Germany

[2] Univ Stuttgart, SCoPE, D-70550 Stuttgart, Germany

[3] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany

[4] Ruhr Univ Bochum, RUBION, D-44780 Bochum, Germany

[5] Univ Ulm, Inst Quantenopt, D-89069 Ulm, Germany

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

关键词：

SINGLE; SPINS; NEXTNANO;

D O I：

10.1038/ncomms1729

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The nitrogen-vacancy (NV) centre in diamond is a promising candidate for a solid-state qubit. However, its charge state is known to be unstable, discharging from the qubit state NV- into the neutral state NV0 under various circumstances. Here we demonstrate that the charge state can be controlled by an electrolytic gate electrode. This way, single centres can be switched from an unknown non-fluorescent state into the neutral charge state NV0, and the population of an ensemble of centres can be shifted from NV0 to NV-. Numerical simulations confirm the manipulation of the charge state to be induced by the gate-controlled shift of the Fermi level at the diamond surface. This result opens the way to a dynamic control of transitions between charge states and to explore hitherto inaccessible states, such as NV+.

引用

页数：6

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