Journal Article

FZJ-2019-04193

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Generation and manipulation of Schrödinger cat states in Rydberg atom arrays

Omran, A. (Corresponding author) ; Levine, H. ; Keesling, A. ; Semeghini, G. ; Wang, T. T. ; Ebadi, S. ; Bernien, H. ; Zibrov, A. S. ; Pichler, H. ; Choi, S. ; Jian, C.FZJ* ; Rossignolo, M. ; Rembold, P.FZJ* ; Montangero, S. ; Calarco, T.FZJ* ; Endres, M. ; Greiner, M. ; Vuletić, V. ; Lukin, M. D.

2019
American Association for the Advancement of Science Washington DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/22601  doi:10.1126/science.aax9743

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 “Schrödinger 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.

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Contributing Institute(s):

1. Quantum Control (PGI-8)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)

Appears in the scientific report 2019

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