18-Qubit Entanglement with Six Photons' Three Degrees of Freedom

Physical Review Letters
Xi-Lin WangJian-Wei Pan

Abstract

Full control of multiple degrees of freedom of multiple particles represents a fundamental ability for quantum information processing. We experimentally demonstrate an 18-qubit Greenberger-Horne-Zeilinger entanglement by simultaneous exploiting three different degrees of freedom of six photons, including their paths, polarization, and orbital angular momentum. We develop high-stability interferometers for reversible quantum logic operations between the photons' different degrees of freedom with precision and efficiencies close to unity, enabling simultaneous readout of 2^{18}=262 144 outcome combinations of the 18-qubit state. A state fidelity of 0.708±0.016 is measured, confirming the genuine entanglement of all 18 qubits.

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Citations

Jan 15, 2020·Scientific Reports·Janusz E JacakLucjan Jacak
Aug 25, 2019·Scientific Reports·Anupam Sarkar, C M Chandrashekar
Sep 29, 2020·Nature Communications·Jean-Claude BesseChristopher Eichler
Oct 28, 2019·Light, Science & Applications·Yijie ShenXiaocong Yuan
Jan 16, 2019·Optics Express·E Heemskerk, B I Akca
Apr 13, 2019·Physical Review Letters·Tian-Ming ZhaoYoon-Ho Kim
Apr 6, 2019·Physical Review Letters·Ming GongJian-Wei Pan
Feb 17, 2019·Proceedings of the National Academy of Sciences of the United States of America·Xuemei GuMario Krenn
Sep 6, 2019·Nature Physics·Valeria SaggioBorivoje Dakić
Nov 8, 2018·The Review of Scientific Instruments·Wei LiXiao Jiang
Feb 1, 2020·Physical Review Letters·F BaccariA Acín
Sep 19, 2019·Scientific Reports·Gary J MooneyLloyd C L Hollenberg
Dec 9, 2020·Entropy·Shijiao WangMu-Tian Cheng
Nov 17, 2020·Physical Review Letters·Bing-Hua LeiDavid J Singh
Dec 2, 2020·Physical Review Letters·Rick MukherjeeFlorian Mintert
Jan 1, 2021·Optics Express·Hanyu ZhangChui-Ping Yang
Oct 30, 2020·Optics Express·Xiao-Jun ZhangM Artoni
Jan 13, 2021·Nature Nanotechnology·Bo ChenXuehua Wang
Apr 7, 2021·Optics Express·Junqiang ChenBenli Yu
Jun 4, 2021·Scientific Reports·Shivani SinghC M Chandrashekar
Jun 25, 2021·Chemical Science·Jakob S KottmannAlán Aspuru-Guzik
Aug 20, 2021·Light, Science & Applications·Aonan ZhangLijian Zhang
May 28, 2019·Journal of Chemical Theory and Computation·Lyuzhou YeShaul Mukamel
Sep 5, 2021·Proceedings of the National Academy of Sciences of the United States of America·Yi-Han LuoJian-Wei Pan

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