Implementation of quantum controlled phase gate and preparation of multiparticle entanglement in cavity QED

Schemes are presented for realizing quantum controlled phase gate and preparing an N-qubit W-like state, which are based on the large-detuned interaction among three-state atoms, dual-mode cavity and a classical pulse. In particular, a class of W states that can be used for perfect teleportation and...

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Published in:Chinese physics B 2011-06, Vol.20 (6), p.34-38, Article 060306
Main Author: 吴熙 陈志华 张勇 陈悦华 叶明勇 林秀敏
Format: Article
Language:English
Subjects:
Coding
Decay
Entanglement
Excitation
Gates
Holes
Spontaneous emission
Teleportation
原子自发辐射
多粒子
控制相
相互作用
纠缠
腔QED
量子位
隐形传输
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cited_by cdi_FETCH-LOGICAL-c390t-6abb8cfa53553bf0e38b7af69378fb83299d812729afcdf740362987c3b962a73
cites cdi_FETCH-LOGICAL-c390t-6abb8cfa53553bf0e38b7af69378fb83299d812729afcdf740362987c3b962a73
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creator 吴熙 陈志华 张勇 陈悦华 叶明勇 林秀敏
description Schemes are presented for realizing quantum controlled phase gate and preparing an N-qubit W-like state, which are based on the large-detuned interaction among three-state atoms, dual-mode cavity and a classical pulse. In particular, a class of W states that can be used for perfect teleportation and superdense coding is generated by only one step. Compared with the previous schemes, cavity decay is largely suppressed because the cavity is only virtually excited and always in the vacuum state and the atomic spontaneous emission is strongly restrained due to a large atom-field detuning.
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source Institute of Physics:Jisc Collections:IOP Publishing Read and Publish 2024-2025 (Reading List)
subjects Coding
Decay
Entanglement
Excitation
Gates
Holes
Spontaneous emission
Teleportation
原子自发辐射
多粒子
控制相
相互作用
纠缠
腔QED
量子位
隐形传输
title Implementation of quantum controlled phase gate and preparation of multiparticle entanglement in cavity QED
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