Quantum state tomography with quantum shot noise
Quantum state tomography with quantum shot noise
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具有量子散粒噪声的量子态断层扫描
DOI：
10.1103/physrevb.73.041305
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发表时间：
2005
影响因子：
3.7
通讯作者：
M. Buttiker
中科院分区：
文献类型：
--
作者：
P. Samuelsson;M. Buttiker
我们提出了一个方案，在介观导体中的一个和两个粒子的轨道量子态的完整重建。处于输运态的导体连续发射轨道量子态。轨道状态由电子分束器操纵，并通过测量平均电流和零频率电流散粒噪声消除器来检测。我们展示了如何，通过一个合适的完整的一组测量，一个和两个粒子状态的密度矩阵的元素可以直接表示在电流和电流放大器。
We propose a scheme for a complete reconstruction of one- and two-particle orbital quantum states in mesoscopic conductors. The conductor in the transport state continuously emits orbital quantum states. The orbital states are manipulated by electronic beam splitters and detected by measurements of average currents and zero frequency current shot-noise correlators. We show how, by a suitable complete set of measurements, the elements of the density matrices of the one- and two-particle states can be directly expressed in terms of the currents and current correlators.