CMOS photonic integrated source of ultrabroadband polarization-entangled photons

Abstract

We showcase a fully on-chip CMOS-fabricated silicon photonic integrated circuit employing a bidirectionally pumped microring and polarization splitter-rotators tailored for the generation of ultrabroadband ($>$9 THz), high-fidelity (90-98%) polarization-entangled photons. Spanning the optical C+L-band and producing over 116 frequency-bin pairs on a 38.4 GHz-spaced grid, this source is ideal for flex-grid wavelength-multiplexed entanglement distribution in multiuser networks.

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Cited by in corpus (7)

• On-chip frequency-bin quantum photonics
• Building a controlled-NOT gate between polarization and frequency
• Entanglement distribution over 155 km metropolitan fiber using a CMOS-compatible silicon chip
• Entanglement distribution over metropolitan fiber using an on-chip broadband polarization entangled photon source
• Resilient Entanglement Distribution in a Multihop Quantum Network
• How to use the dispersion in the ${\chi }^{(3)}$ tensor for broadband generation of polarization-entangled photons
• Quantum interference with time-frequency modes and multiple-photons generated by a silicon nitride microresonator