Deterministic generation of multiparticle entanglement by quantum Zeno dynamics

被引：106

作者：

Barontini, Giovanni ^{[1
]}

Hohmann, Leander ^{[1
]}

Haas, Florian ^{[1
]}

Esteve, Jerome ^{[1
]}

Reichel, Jakob ^{[1
]}

机构：

[1] Univ Paris 06, Ecole Normale Super, Lab Kastler Brossel, Coll France, F-75005 Paris, France

来源：

SCIENCE | 2015年 / 349卷 / 6254期

关键词：

STATE; ATOMS; MODE; BITS;

D O I：

10.1126/science.aaa0754

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Multiparticle entangled quantum states, a key resource in quantum-enhanced metrology and computing, are usually generated by coherent operations exclusively. However, unusual forms of quantum dynamics can be obtained when environment coupling is used as part of the state generation. In this work, we used quantum Zeno dynamics (QZD), based on nondestructive measurement with an optical microcavity, to deterministically generate different multiparticle entangled states in an ensemble of 36 qubit atoms in less than 5 microseconds. We characterized the resulting states by performing quantum tomography, yielding a time-resolved account of the entanglement generation. In addition, we studied the dependence of quantum states on measurement strength and quantified the depth of entanglement. Our results show that QZD is a versatile tool for fast and deterministic entanglement generation in quantum engineering applications.

引用

页码：1317 / 1321

页数：5

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