Nanomechanical readout of a single spin

Philipp R. Struck; Heng Wang; Guido Burkard

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Nanomechanical readout of a single spin

机译：一次旋转的纳米机械读数

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摘要

The spin of a single electron in a suspended carbon nanotube can be read out by using its coupling to the nanomechanical motion of the nanotube. To show this, we consider a single electron confined within a quantum dot formed by the suspended carbon nanotube. The spin-orbit interaction induces a coupling between the spin and one of the bending modes of the suspended part of the nanotube. We calculate the response of the system to pulsed external driving of the mechanical motion using a Jaynes-Cummings model. To account for resonator damping, we solve a quantum master equation, with parameters comparable to those used in recent experiments, and show how information about the spin state of the system can be acquired by measuring the mechanical motion of the nanotube. The latter can be detected by observing the current through a nearby charge sensor.

机译：悬浮碳纳米管中单个电子的自旋可通过与纳米管的纳米机械运动耦合来读出。为了证明这一点，我们考虑了一个单个电子，该电子被限制在由悬浮碳纳米管形成的量子点内。自旋轨道相互作用引起自旋与纳米管的悬浮部分的弯曲模式之一之间的耦合。我们使用Jaynes-Cummings模型计算系统对机械运动的脉冲外部驱动的响应。为了解决共振器阻尼问题，我们使用一个与最近的实验中的参数可比的参数，求解了一个量子主方程，并展示了如何通过测量纳米管的机械运动来获取有关系统自旋状态的信息。后者可以通过观察附近电荷传感器的电流来检测。

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来源
《Physical review》 |2014年第4期|045404.1-045404.7|共7页
作者
Philipp R. Struck; Heng Wang; Guido Burkard;
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作者单位

Continental Reifen Deutchland GmbH,Hannover Germany Department of Physics, University of Konstanz, D-78457 Konstanz, Germany;

Department of Physics, University of Konstanz, D-78457 Konstanz, Germany;

Department of Physics, University of Konstanz, D-78457 Konstanz, Germany;

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正文语种 eng
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micro- and nano-electromechanical systems (MEMS/NEMS) and devices; spin-orbit coupling, zeeman and stark splitting, jahn-teller effect;

机译：微和纳米机电系统（MEMS / NEMS）和设备;自旋轨道耦合;塞曼和斯塔克分裂;詹-泰勒效应;

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1. Single-Shot Readout and Relaxation of Singlet and Triplet States in Exchange-Coupled ~(31)P Electron Spins in Silicon [J] . Juan P. Dehollain, Juha T. Muhonen, Kuan Y. Tan, Physical review letters . 2014,第23期

机译：硅中交换耦合的〜（31）P电子自旋中单态和三态态的单发读出和弛豫
2. Integrated silicon qubit platform with single-spin addressability, exchange control and single-shot singlet-triplet readout [J] . M. A. Fogarty, K. W. Chan, B. Hensen, Nature Communications . 2018,第1期

机译：集成的硅量子比特平台，具有单轴寻址能力，交换控制和单脉冲单重态-三重态读数
3. Spin-Orbit-Induced Strong Coupling of a Single Spin to a Nanomechanical Resonator [J] . Andras Palyi, P. R. Struck, Mark Rudner, Physical review letters . 2012,第20期

机译：自旋轨道诱导的单自旋与纳米机械谐振器的强耦合。
4. Single-Shot Readout of Electron Spins in a Semiconductor Quantum Dot [C] . R. Hanson, J.M. Elzerman, L.H. Willems van Beveren, International Conference on Low Temperature Physics . 2005

机译：半导体量子点中的电子旋转的单次读数
5. Quadratic coupling between a classical nanomechanical oscillator and a single spin. [D] . Dhingra, Shonali. 2015

机译：经典纳米机械振荡器和单旋转之间的二次耦合。
6. Integrated silicon qubit platform with single-spin addressability exchange control and single-shot singlet-triplet readout [O] . M. A. Fogarty, K. W. Chan, B. Hensen, -1

机译：集成式硅量子比特平台具有单轴寻址能力交换控制和单脉冲单重态-三重态读数
7. High-fidelity single-shot readout of single electron spin in diamond with spin-to-charge conversion [O] . Qi Zhang, Yuhang Guo, Wentao Ji, 2021

机译：用旋转电荷转换钻石中单电子旋转的高保真单次读数

Nanomechanical readout of a single spin

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