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arXiv · 1611.03774

Persistent energy-time entanglement covering multiple resonances of an on-chip biphoton frequency comb

Jose A. Jaramillo-Villegas·Poolad Imany·Ogaga D. Odele·Daniel E. Leaird·Zhe-Yu Ou·Minghao Qi·Andrew M. Weiner
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Abstract

We investigate the time-frequency signatures of an on-chip biphoton frequency comb (BFC) generated from a silicon nitride microring resonator. Using a Franson interferometer, we examine the multifrequency nature of the photon pair source in a time entanglement measurement scheme; having multiple frequency modes from the BFC results in a modulation of the interference pattern. This measurement together with a Schmidt mode decomposition shows that the generated continuous variable energy-time entangled state spans multiple pair-wise modes. Additionally, we demonstrate nonlocal dispersion cancellation, a foundational concept in time-energy entanglement, suggesting the potential of the chip-scale BFC for large-alphabet quantum key distribution.

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Jose A. Jaramillo-Villegas, Poolad Imany, Ogaga D. Odele, Daniel E. Leaird, Zhe-Yu Ou, Minghao Qi, Andrew M. Weiner. 2016-11-11. Persistent energy-time entanglement covering multiple resonances of an on-chip biphoton frequency comb. https://doi.org/10.1364/optica.4.000655

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