Deterministic Ultracold Ion Source Targeting the Heisenberg Limit
Deterministic Ultracold Ion Source Targeting the Heisenberg Limit
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DOI：
10.1103/physrevlett.102.070501
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发表时间：
2009-02-20
影响因子：
8.6
通讯作者：
Singer, K.
中科院分区：
文献类型：
--
作者：
Schnitzler, W.;Linke, N. M.;Singer, K.
制造量子处理器和未来纳米固态器件的主要挑战是具有纳米分辨率的材料改性技术和抑制掺杂剂或量子比特载体的统计波动。基于mK激光冷却离子的分段离子阱，我们实现了一个确定性的单离子源，它可以与大量的同情冷却的离子种类，同位素或离子分子。我们已经确定性地提取了预定数量的离子的需求，并测量了6.3米/秒的纵向速度的不确定性和600亩拉德的空间光束发散。我们在数值模拟中表明，如果离子被冷却到运动基态（海森堡极限）纳米空间分辨率可以实现。
The major challenges to fabricate quantum processors and future nano-solid-state devices are material modification techniques with nanometer resolution and suppression of statistical fluctuations of dopants or qubit carriers. Based on a segmented ion trap with mK laser-cooled ions we have realized a deterministic single-ion source which could operate with a huge range of sympathetically cooled ion species, isotopes or ionic molecules. We have deterministically extracted a predetermined number of ions on demand and have measured a longitudinal velocity uncertainty of 6.3 m/s and a spatial beam divergence of 600 mu rad. We show in numerical simulations that if the ions are cooled to the motional ground state (Heisenberg limit) nanometer spatial resolution can be achieved.