Photonic Four-qubit Entangled Decoherence-free States Assisted by Cavity-QED System

被引：6
|
作者：
Chen, Chao [1 ,2 ]
机构：
[1] Sichuan Univ Sci & Engn, Sch Comp Sci, Zigong 643000, Peoples R China
[2] Sichuan Univ Sci & Engn, Ctr High Performance Comp, Zigong 643000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2016年 / 55卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Decoherence-free state; Photonic quantum computing; Quantum dot; One-side optical microcavity; SIDE OPTICAL MICROCAVITIES; QUANTUM KEY DISTRIBUTION; LINEAR OPTICS; ELECTRON-SPIN; COMPUTATION; DOT; QUBIT; COMMUNICATION; TELEPORTATION; PURIFICATION;
D O I：
10.1007/s10773-016-3108-6
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose an efficient preparation of photonic four-qubit entangled decoherence-free states assisted by the cavity-QED system. By using the optical selection rule derived by a single electron charged self-assembled GaAs/InAs quantum dot in a micropillar resonator, two photons are used to generate four-qubit entangled decoherence-free states. Compared with previous entanglement based photonic protocols, the present one requires single-photon resources and is deterministic. These states may be applied to long-distance communications because only two photons are transmitted.
引用
收藏
页码：4841 / 4851
页数：11
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