Reconfigurable controlled two-qubit operation on a quantum photonic chip

被引：18
|
作者：
Li, H. W. [1 ]
Przeslak, S. [1 ]
Niskanen, A. O. [1 ]
Matthews, J. C. F. [2 ,3 ]
Politi, A. [2 ,3 ]
Shadbolt, P. [2 ,3 ]
Laing, A. [2 ,3 ]
Lobino, M. [2 ,3 ]
Thompson, M. G. [2 ,3 ]
O'Brien, J. L. [2 ,3 ]
机构：
[1] Nokia Res Ctr, Cambridge CB3 0FA, England
[2] Univ Bristol, Ctr Quantum Photon, HH Wills Phys Lab, Bristol BS8 1UB, Avon, England
[3] Univ Bristol, Dept Elect & Elect Engn, Bristol BS8 1UB, Avon, England
来源：
NEW JOURNAL OF PHYSICS | 2011年 / 13卷
基金：
英国工程与自然科学研究理事会;
关键词：
ENTANGLEMENT;
D O I：
10.1088/1367-2630/13/11/115009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to programme the photonic circuits that implement some desired logical operation. Here we demonstrate a reconfigurable controlled two-qubit operation on a chip using a multiwaveguide interferometer with a tunable phase shifter. We found excellent agreement between theory and experiment, with a 0.98 +/- 0.02 average similarity between measured and ideal operations.
引用
收藏
页数：8
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