Deterministic CNOT gate and entanglement swapping for photonic qubits using a quantum-dot spin in a double-sided optical microcavity

被引：37

作者：

Wang, Hong-Fu ^{[1
,2
]}

Wen, Jing-Ji ^{[3
,4
]}

Zhu, Ai-Dong ^{[1
]}

Zhang, Shou ^{[1
]}

Yeon, Kyu-Hwang ^{[3
,4
]}

机构：

[1] Yanbian Univ, Dept Phys, Coll Sci, Yanji 133002, Jilin, Peoples R China

[2] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China

[3] Chungbuk Natl Univ, Dept Phys, Coll Nat Sci, Cheongju 361763, Chungbuk, South Korea

[4] Chungbuk Natl Univ, Program Device Phys BK21, Coll Nat Sci, Cheongju 361763, Chungbuk, South Korea

来源：

PHYSICS LETTERS A | 2013年 / 377卷 / 40期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

CNOT gate; Entanglement swapping; Quantum dot; Optical microcavity; ELECTRON-SPIN; COHERENT STATES; ATOMIC-STATE; TELEPORTATION; MANIPULATION; COMPUTATION; MOTION; ION; SCHEME;

D O I：

10.1016/j.physleta.2013.09.005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a deterministic and scalable scheme, to construct a two-qubit controlled-NOT (CNOT) gate and realize entanglement swapping between photonic qubits using a quantum-dot (QD) spin in a double-sided optical microcavity. The scheme is based on spin selective photon reflection from the cavity and can be achieved in a nondestructive and heralded way. We assess the feasibility of the scheme and show that the scheme can work in both the weak coupling and the strong coupling regimes. The scheme opens promising perspectives for long-distance photonic quantum communication and distributed quantum information processing. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：2870 / 2876

页数：7

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