Publication Date:
2015-09-19
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barontini, Giovanni -- Hohmann, Leander -- Haas, Florian -- Esteve, Jerome -- Reichel, Jakob -- New York, N.Y. -- Science. 2015 Sep 18;349(6254):1317-21. doi: 10.1126/science.aaa0754.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire Kastler Brossel, Ecole Normale Superieure, Universite Pierre et Marie Curie Paris 6, CNRS, College de France, 24 rue Lhomond, 75005 Paris, France. ; Laboratoire Kastler Brossel, Ecole Normale Superieure, Universite Pierre et Marie Curie Paris 6, CNRS, College de France, 24 rue Lhomond, 75005 Paris, France. jakob.reichel@ens.fr.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26383948" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink