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CMOS photonic integrated source of broadband polarization-entangled photons...

Publication Type
Journal
Journal Name
Optica Quantum
Publication Date
Page Numbers
254 to 259
Volume
2
Issue
4

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 broadband (>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.