Universität zu Köln

Omran, A., Levine, H., Keesling, A., Semeghini, G., Wang, T. T., Ebadi, S., Bernien, H., Zibrov, A. S., Pichler, H., Choi, S., Cui, J., Rossignolo, M., Rembold, P., Montangero, S., Calarco, T., Endres, M., Greiner, M., Vuletic, V. and Lukin, M. D. (2019). Generation and manipulation of Schrodinger cat states in Rydberg atom arrays. Science, 365 (6453). WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 1095-9203

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Abstract

Quantum entanglement involving coherent superpositions of macroscopically distinct states is among the most striking features of quantum theory, but its realization is challenging because such states are extremely fragile. Using a programmable quantum simulator based on neutral atom arrays with interactions mediated by Rydberg states, we demonstrate the creation of Schrodinger cat states of the Greenberger-Horne-Zeilinger (GHZ) type with up to 20 qubits. Our approach is based on engineering the energy spectrum and using optimal control of the many-body system. We further demonstrate entanglement manipulation by using GHZ states to distribute entanglement to distant sites in the array, establishing important ingredients for quantum information processing and quantum metrology.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Omran, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Levine, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Keesling, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Semeghini, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, T. T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ebadi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bernien, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zibrov, A. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pichler, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Choi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cui, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rossignolo, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rembold, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Montangero, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Calarco, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Endres, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Greiner, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vuletic, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lukin, M. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-144573
DOI:	10.1126/science.aax9743
Journal or Publication Title:	Science
Volume:	365
Number:	6453
Date:	2019
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication:	WASHINGTON
ISSN:	1095-9203
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ENTANGLEMENT Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14457