Harnessing high-dimensional hyperentanglement through a biphoton frequency comb
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Author(s)
Xie, Zhenda
Zhong, Tian
Shrestha, Sajan
Xu, XinAn
Liang, Junlin
Gong, Yan-Xiao
Bienfang, Joshua C.
Restelli, Alessandro
Shapiro, Jeffrey H.
Wong, Franco N. C.
Date Issued
June 2015
Journal
Nature Photonics
Publisher
Nature Publishing Group
Citation
Xie, Zhenda, Tian Zhong, Sajan Shrestha, XinAn Xu, Junlin Liang, Yan-Xiao Gong, Joshua C. Bienfang, et al. “Harnessing High-Dimensional Hyperentanglement through a Biphoton Frequency Comb.” Nature Photon 9, no. 8 (June 29, 2015): 536–542.
Version
Author's final manuscript
Abstract
Quantum entanglement is a fundamental resource for secure information processing and communications, and hyperentanglement or high-dimensional entanglement has been separately proposed for its high data capacity and error resilience. The continuous-variable nature of the energy–time entanglement makes it an ideal candidate for efficient high-dimensional coding with minimal limitations. Here, we demonstrate the first simultaneous high-dimensional hyperentanglement using a biphoton frequency comb to harness the full potential in both the energy and time domain. Long-postulated Hong–Ou–Mandel quantum revival is exhibited, with up to 19 time-bins and 96.5% visibilities. We further witness the high-dimensional energy–time entanglement through Franson revivals, observed periodically at integer time-bins, with 97.8% visibility. This qudit state is observed to simultaneously violate the generalized Bell inequality by up to 10.95 standard deviations while observing recurrent Clauser–Horne–Shimony–Holt S-parameters up to 2.76. Our biphoton frequency comb provides a platform for photon-efficient quantum communications towards the ultimate channel capacity through energy–time–polarization high-dimensional encoding.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1038/nphoton.2015.110
