Generation and manipulation of Schrödinger cat states in Rydberg atom arrays

Science
A OmranM D Lukin

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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Citations

May 21, 2020·Nature·Yiheng LinChin-Wen Chou
Sep 29, 2020·Nature Communications·Jean-Claude BesseChristopher Eichler
Jun 13, 2020·Physical Review Letters·Ya-Nan LuXin-Yu Pan
Jul 9, 2020·Physical Review Letters·Mikhail Mamaev, Ana Maria Rey
Sep 22, 2020·Physical Review Letters·Markus SteckerAndreas Günther
Sep 19, 2019·Scientific Reports·Gary J MooneyLloyd C L Hollenberg
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Nov 9, 2019·Physical Review Letters·Harry LevineMikhail D Lukin
Jun 18, 2020·Frontiers in Bioengineering and Biotechnology·Fabrizio AngaroniMarco Antoniotti
Jun 20, 2020·Science·Bing YangJian-Wei Pan
Aug 1, 2020·Nature Communications·Manuel GessnerLuca Pezzè
Aug 29, 2020·Physical Review Letters·A CidrimR Bachelard
Apr 1, 2020·Optics Express·Sung-Mi Yoo, Juha Javanainen
Mar 7, 2020·Physical Review Letters·T M WintermantelS Whitlock
Feb 15, 2020·Physical Review Letters·F M GambettaI Lesanovsky
Aug 29, 2020·Physical Review Letters·Javier Robledo MorenoAntoine Georges
Jan 21, 2021·Proceedings of the National Academy of Sciences of the United States of America·Rhine SamajdarSubir Sachdev
Dec 2, 2020·Physical Review Letters·Rick MukherjeeFlorian Mintert
Dec 5, 2020·Physical Review Letters·Luca Pezzè, Augusto Smerzi
Jan 1, 2021·Optics Express·Hanyu ZhangChui-Ping Yang
Jan 8, 2021·Physical Review Letters·Yuan XuDapeng Yu
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May 15, 2021·Physical Review Letters·Timo FelserSimone Montangero
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Aug 17, 2021·Physical Review Letters·Wenchao XuVladan Vuletić
Aug 7, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Victor Mukherjee, Uma Divakaran

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