Phase-Stable Free-Space Optical Lattices for Trapped Ions.

Phase-Stable Free-Space Optical Lattices for Trapped Ions.
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用于捕获离子的相稳定自由空间光学晶格

DOI:
10.1103/physrevlett.116.033002
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发表时间:
2016
影响因子:
8.6
通讯作者:
U. G. Poschinger
U. G. Poschinger
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
C. T. Schmiegelow;H. Kaufmann;T. Ruster;J. Schulz;V. Kaushal;M. Hettrich;F. Schmidt- Kaler;U. G. Poschinger

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我们证明了光学晶格相对于单个捕获离子的绝对相位的控制。晶格是由非共振自由空间激光束产生的,我们通过测量其在捕获离子上的ac-Stark位移来主动稳定其相位。离子在驻波内的局部化超过其周期的2%。锁定晶格允许我们在相空间中通过可控方向的共振光力施加位移操作。此外,我们还观察了自旋叠加态的晶格诱导相演化,以分析相关的退相干机制。最后,我们利用晶格诱导相移来推断离子位置沿阱轴在一定范围内的变化,精度优于6 nm。
We demonstrate control of the absolute phase of an optical lattice with respect to a single trapped ion. The lattice is generated by off-resonant free-space laser beams, and we actively stabilize its phase by measuring its ac-Stark shift on a trapped ion. The ion is localized within the standing wave to better than 2% of its period. The locked lattice allows us to apply displacement operations via resonant optical forces with a controlled direction in phase space. Moreover, we observe the lattice-induced phase evolution of spin superposition states in order to analyze the relevant decoherence mechanisms. Finally, we employ lattice-induced phase shifts for inferring the variation of the ion position over therange along the trap axis at accuracies of better than 6 nm.
加州高保真量子逻辑
DOI: --
发表时间: 2017
期刊:
影响因子: --
作者:
C. Ballance
通讯作者: C. Ballance