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Title: Phonon-mediated quantum state transfer and remote qubit entanglement

Abstract

Phonons, and in particular surface acoustic wave phonons, have been proposed as a means to coherently couple distant solid-state quantum systems. Individual phonons in a resonant structure can be controlled and detected by superconducting qubits, enabling the coherent generation and measurement of complex stationary phonon states. We report the deterministic emission and capture of itinerant surface acoustic wave phonons, enabling the quantum entanglement of two superconducting qubits. Using a 2-millimeter-long acoustic quantum communication channel, equivalent to a 500-nanosecond delay line, we demonstrate the emission and recapture of a phonon by one superconducting qubit, quantum state transfer between two superconducting qubits with a 67% efficiency, and, by partial transfer of a phonon, generation of an entangled Bell pair with a fidelity of 84%.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1547478
Grant/Contract Number:  
FWP 50503
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 364 Journal Issue: 6438; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English

Citation Formats

Bienfait, A., Satzinger, K. J., Zhong, Y. P., Chang, H. -S., Chou, M. -H., Conner, C. R., Dumur, É., Grebel, J., Peairs, G. A., Povey, R. G., and Cleland, A. N. Phonon-mediated quantum state transfer and remote qubit entanglement. United States: N. p., 2019. Web. doi:10.1126/science.aaw8415.
Bienfait, A., Satzinger, K. J., Zhong, Y. P., Chang, H. -S., Chou, M. -H., Conner, C. R., Dumur, É., Grebel, J., Peairs, G. A., Povey, R. G., & Cleland, A. N. Phonon-mediated quantum state transfer and remote qubit entanglement. United States. doi:10.1126/science.aaw8415.
Bienfait, A., Satzinger, K. J., Zhong, Y. P., Chang, H. -S., Chou, M. -H., Conner, C. R., Dumur, É., Grebel, J., Peairs, G. A., Povey, R. G., and Cleland, A. N. Thu . "Phonon-mediated quantum state transfer and remote qubit entanglement". United States. doi:10.1126/science.aaw8415.
@article{osti_1547478,
title = {Phonon-mediated quantum state transfer and remote qubit entanglement},
author = {Bienfait, A. and Satzinger, K. J. and Zhong, Y. P. and Chang, H. -S. and Chou, M. -H. and Conner, C. R. and Dumur, É. and Grebel, J. and Peairs, G. A. and Povey, R. G. and Cleland, A. N.},
abstractNote = {Phonons, and in particular surface acoustic wave phonons, have been proposed as a means to coherently couple distant solid-state quantum systems. Individual phonons in a resonant structure can be controlled and detected by superconducting qubits, enabling the coherent generation and measurement of complex stationary phonon states. We report the deterministic emission and capture of itinerant surface acoustic wave phonons, enabling the quantum entanglement of two superconducting qubits. Using a 2-millimeter-long acoustic quantum communication channel, equivalent to a 500-nanosecond delay line, we demonstrate the emission and recapture of a phonon by one superconducting qubit, quantum state transfer between two superconducting qubits with a 67% efficiency, and, by partial transfer of a phonon, generation of an entangled Bell pair with a fidelity of 84%.},
doi = {10.1126/science.aaw8415},
journal = {Science},
number = 6438,
volume = 364,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aaw8415

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