Proposal for Heralded Generation and Detection of Entangled Microwave–Optical-Photon Pairs

Changchun Zhong, Zhixin Wang, Changling Zou, Mengzhen Zhang, Xu Han, Wei Fu, Mingrui Xu, S. Shankar, Michel H. Devoret, Hong X. Tang, and Liang Jiang
Phys. Rev. Lett. 124, 010511 – Published 10 January 2020
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Abstract

Quantum state transfer between microwave and optical frequencies is essential for connecting superconducting quantum circuits to optical systems and extending microwave quantum networks over long distances. However, establishing such a quantum interface is extremely challenging because the standard direct quantum transduction requires both high coupling efficiency and small added noise. We propose an entanglement-based scheme—generating microwave-optical entanglement and using it to transfer quantum states via quantum teleportation—which can bypass the stringent requirements in direct quantum transduction and is robust against loss errors. In addition, we propose and analyze a counterintuitive design—suppress the added noise by placing the device at a higher temperature environment—which can improve both the device quality factor and power handling capability. We systematically analyze the generation and verification of entangled microwave–optical-photon pairs. The parameter for entanglement verification favors the regime of cooperativity mismatch and can tolerate certain thermal noises. Our scheme is feasible given the latest advances on electro-optomechanics, and can be generalized to various physical systems.

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  • Received 27 January 2019

DOI:https://doi.org/10.1103/PhysRevLett.124.010511

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Changchun Zhong1,2,*, Zhixin Wang1,2, Changling Zou3, Mengzhen Zhang1,2, Xu Han2,4, Wei Fu2,4, Mingrui Xu2,4, S. Shankar1,2, Michel H. Devoret1,2, Hong X. Tang1,2,4, and Liang Jiang1,2,†

  • 1Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA
  • 2Yale Quantum Institute, Yale University, New Haven, Connecticut 06520, USA
  • 3Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 4Department of Electrical Engineering, Yale University, New Haven, Connecticut 06520, USA

  • *zhong.changchun@uchicago.edu Present address: Pritzker School of Molecular Engineering, University of Chicago, Illinois 60637, USA.
  • liang.jiang@uchicago.edu Present address: Pritzker School of Molecular Engineering, University of Chicago, Illinois 60637, USA.

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Issue

Vol. 124, Iss. 1 — 10 January 2020

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