Versatile laser-free trapped-ion entangling gates

Versatile laser-free trapped-ion entangling gates
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多功能无激光俘获离子纠缠门

DOI:
10.1088/1367-2630/ab0be5
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发表时间:
2018
影响因子:
3.3
通讯作者:
S. Libby
S. Libby
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
R. T. Sutherland;R. Srinivas;R. Srinivas;S. Burd;S. Burd;D. Leibfried;A. Wilson;D. Wineland;D. Wineland;D. Wineland;D. Allcock;D. Allcock;D. Allcock;D. Slichter;S. Libby

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我们提出了一个一般理论的激光自由纠缠门与捕获离子超精细量子比特,使用静态或振荡磁场梯度结合一对均匀的微波场对称失谐的量子比特频率。通过转换成一个“双色”的相互作用图片,我们表明,无论是σ <$$><$<$σ <$$>或σ <$z <$σ <$z几何相位门可以执行。通过选择微波失谐量来确定门基。可以调谐驱动参数以提供与量子比特频率波动的内在动力学解耦。可以以一种新颖的方式实现σ <$z <$σ <$z门,从而减轻实验限制。我们提出了数值模拟的门几何形状假设现实的参数。
We present a general theory for laser-free entangling gates with trapped-ion hyperfine qubits, using either static or oscillating magnetic-field gradients combined with a pair of uniform microwave fields symmetrically detuned about the qubit frequency. By transforming into a ‘bichromatic’ interaction picture, we show that either σ ˆ ϕ ⨂ σ ˆ ϕ or σ ˆ z ⨂ σ ˆ z geometric phase gates can be performed. The gate basis is determined by selecting the microwave detuning. The driving parameters can be tuned to provide intrinsic dynamical decoupling from qubit frequency fluctuations. The σ ˆ z ⨂ σ ˆ z gates can be implemented in a novel manner which eases experimental constraints. We present numerical simulations of gate fidelities assuming realistic parameters.
使用修饰态的动态场梯度中捕获离子的量子动力学
DOI: 10.1088/1367-2630/aa7b22
发表时间: 2017
影响因子: 3.3
作者:
S. Wölk;Ch. Wunderlich
通讯作者: Ch. Wunderlich
DOI: 10.1103/physreva.85.040302
发表时间: 2012-04-04
期刊: PHYSICAL REVIEW A
影响因子: 2.9
作者:
Bermudez, A.;Schmidt, P. O.;Retzker, A.
通讯作者: Retzker, A.
DOI: 10.1103/physrevlett.108.220502
发表时间: 2012-06-01
影响因子: 8.6
作者:
Khromova, A.;Piltz, Ch.;Wunderlich, Ch.
通讯作者: Wunderlich, Ch.