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Title: Quantum interference and correlation control of frequency-bin qubits

Abstract

Frequency-bin quantum information encoding offers an intriguing synergy with classical optical networks, with the ability to support many qubits in a single fiber. Yet, coherent quantum frequency operations prove extremely challenging due to the difficulties in mixing frequencies arbitrarily and with low noise. In this paper, we address such challenges and implement distinct quantum gates in parallel on two entangled frequency-bin qubits in the same optical fiber. Our basic quantum operation controls the spectral overlap between adjacent spectral bins, allowing us to observe frequency-bin Hong–Ou–Mandel interference with a visibility of 0.971±0.007. By integrating this tunability with frequency parallelization, we synthesize independent gates on entangled qubits and flip their spectral correlations, allowing us to observe strong violation of the separability bound. Our realization of closed, user-defined gates on frequency-bin qubits in parallel should find application in the development of fiber-compatible quantum information processing and quantum networks.

Authors:
ORCiD logo; ORCiD logo; ORCiD logo; ORCiD logo; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1481315
Alternate Identifier(s):
OSTI ID: 1482437
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Optica
Additional Journal Information:
Journal Name: Optica Journal Volume: 5 Journal Issue: 11; Journal ID: ISSN 2334-2536
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Lu, Hsuan-Hao, Lukens, Joseph M., Peters, Nicholas A., Williams, Brian P., Weiner, Andrew M., and Lougovski, Pavel. Quantum interference and correlation control of frequency-bin qubits. United States: N. p., 2018. Web. doi:10.1364/OPTICA.5.001455.
Lu, Hsuan-Hao, Lukens, Joseph M., Peters, Nicholas A., Williams, Brian P., Weiner, Andrew M., & Lougovski, Pavel. Quantum interference and correlation control of frequency-bin qubits. United States. doi:10.1364/OPTICA.5.001455.
Lu, Hsuan-Hao, Lukens, Joseph M., Peters, Nicholas A., Williams, Brian P., Weiner, Andrew M., and Lougovski, Pavel. Fri . "Quantum interference and correlation control of frequency-bin qubits". United States. doi:10.1364/OPTICA.5.001455.
@article{osti_1481315,
title = {Quantum interference and correlation control of frequency-bin qubits},
author = {Lu, Hsuan-Hao and Lukens, Joseph M. and Peters, Nicholas A. and Williams, Brian P. and Weiner, Andrew M. and Lougovski, Pavel},
abstractNote = {Frequency-bin quantum information encoding offers an intriguing synergy with classical optical networks, with the ability to support many qubits in a single fiber. Yet, coherent quantum frequency operations prove extremely challenging due to the difficulties in mixing frequencies arbitrarily and with low noise. In this paper, we address such challenges and implement distinct quantum gates in parallel on two entangled frequency-bin qubits in the same optical fiber. Our basic quantum operation controls the spectral overlap between adjacent spectral bins, allowing us to observe frequency-bin Hong–Ou–Mandel interference with a visibility of 0.971±0.007. By integrating this tunability with frequency parallelization, we synthesize independent gates on entangled qubits and flip their spectral correlations, allowing us to observe strong violation of the separability bound. Our realization of closed, user-defined gates on frequency-bin qubits in parallel should find application in the development of fiber-compatible quantum information processing and quantum networks.},
doi = {10.1364/OPTICA.5.001455},
journal = {Optica},
number = 11,
volume = 5,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1364/OPTICA.5.001455

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Cited by: 10 works
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