Generalized overlap quantum state tomography1

Generalized overlap quantum state tomography1
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广义重叠量子态断层扫描1

DOI:
10.1103/physrevresearch.2.042002
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发表时间:
2020
影响因子:
4.2
通讯作者:
Pfister, Olivier
Pfister, Olivier
中科院分区:
--
文献类型:
--
作者:
Nehra, Rajveer;Eaton, Miller;González-Arciniegas, Carlos;Kim, M. S.;Gerrits, Thomas;Lita, Adriana;Nam, Sae Woo;Pfister, Olivier

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我们提出并实验证明了一种量子态层析协议,该协议是对Wallentowitz-Vogel-Banaszek-Wódkiewicz逐点Wigner函数重建的推广和改进。利用半定规划,在干涉一小部分校准相干态后,在Fock基上有效地重建了任意量子态的全密度算符。该协议具有资源效率高、计算效率高、抗噪声能力强、不依赖近似状态位移、并确保结果的物理性等优点。
We propose and experimentally demonstrate a quantum state tomography protocol that generalizes and improves upon the Wallentowitz-Vogel-Banaszek-Wódkiewicz point-by-point Wigner function reconstruction. The full density operator of an arbitrary quantum state is efficiently reconstructed in the Fock basis, using semidefinite programming, after interference with a small set of calibrated coherent states. This protocol is resource- and computationally efficient, is robust against noise, does not rely on approximate state displacements, and ensures the physicality of results.
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