Activation of indistinguishability-based quantum coherence for enhanced metrological applications with particle statistics imprint-Reference-Cited by-同舟云学术

Activation of indistinguishability-based quantum coherence for enhanced metrological applications with particle statistics imprint

Published:2022-05-20 Issue:21 Volume:119 Page:
ISSN:0027-8424
Container-title:Proceedings of the National Academy of Sciences
language:en
Short-container-title:Proc. Natl. Acad. Sci. U.S.A.

Author:

Sun Kai¹²^ORCID,Liu Zheng-Hao¹²^ORCID,Wang Yan¹²^ORCID,Hao Ze-Yan¹²,Xu Xiao-Ye¹²,Xu Jin-Shi¹²,Li Chuan-Feng¹²,Guo Guang-Can¹²,Castellini Alessia³,Lami Ludovico⁴,Winter Andreas⁵⁶^ORCID,Adesso Gerardo⁷⁸^ORCID,Compagno Giuseppe³,Lo Franco Rosario⁹^ORCID

Affiliation:

1. Chinese Academy of Sciences Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, People’s Republic of China

2. Chinese Academy of Sciences Centre for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China

3. Dipartimento di Fisica e Chimica–Emilio Segrè, Università di Palermo, 90123 Palermo, Italy

4. Institut für Theoretische Physik, Universität Ulm, D-89069 Ulm, Germany

5. Institució Catalana de Recerca i Estudis Avançats (ICREA), Universitat Autònoma de Barcelona, ES-08193 Bellaterra, Spain

6. Física Teórica: Informació i Fenómens Quàntics, Departament de Física, Universitat Autònoma de Barcelona, ES-08193 Bellaterra, Spain

7. School of Mathematical Sciences, University of Nottingham, Nottingham NG/2RD, United Kingdom

8. Centre for the Mathematics and Theoretical Physics of Quantum Non-Equilibrium Systems, University of Nottingham, Nottingham NG/2RD, United Kingdom

9. Dipartimento di Ingegneria, Università di Palermo, 90128 Palermo, Italy

Abstract

Significance Quantum coherence has a fundamentally different origin for nonidentical and identical particles since for the latter a unique contribution exists due to indistinguishability. Here we experimentally show how to exploit, in a controllable fashion, the contribution to quantum coherence stemming from spatial indistinguishability. Our experiment also directly proves, on the same footing, the different role of particle statistics (bosons or fermions) in supplying coherence-enabled advantage for quantum metrology. Ultimately, our results provide insights toward viable quantum-enhanced technologies based on tunable indistinguishability of identical building blocks.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Key Research Program of Frontier Sciences, CAS

Science Foundation of the CAS

Fundamental Research Funds for the Central Universities

Anhui Initiative in Quantum Information Technologies

Publisher

Proceedings of the National Academy of Sciences

Subject

Multidisciplinary

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