RLE Recent Papers

Integrated Source of Spectrally Filtered Correlated Photons for Large-Scale Quantum Photonic Systems (Phys. Rev. X)

Optical image of the photonic integrated circuit that creates, filters, and manipulates photon pairs in an area of approximately 0.4 square millimeters. [Optical image, above, of the photonic integrated circuit that creates, filters, and manipulates photon pairs in an area of approximately 0.4 square millimeters. Courtesy N. Harris, Quantum Photonics Laboratory.

Nicholas C. Harris, Davide Grassani, Angelica Simbula, Mihir Pant, Matteo Galli, Tom Baehr-Jones, Michael Hochberg, Dirk Englund, Daniele Bajoni, and Christophe Galland

DOI: http://dx.doi.org/10.1103/PhysRevX.4.041047

Abstract:
We demonstrate the generation of quantum-correlated photon pairs combined with the spectral filtering of the pump field by more than 95 dB on a single silicon chip using electrically tunable ring resonators and passive Bragg reflectors. Moreover, we perform the demultiplexing and routing of signal and idler photons after transferring them via an optical fiber to a second identical chip. Nonclassical two-photon temporal correlations with a coincidence-to-accidental ratio of 50 are measured without further off-chip filtering. Our system, fabricated with high yield and reproducibility in a CMOS-compatible process, paves the way toward large-scale quantum photonic circuits by allowing sources and detectors of single photons to be integrated on the same chip.

Related Links:

Integrated Source of Spectrally Filtered Correlated Photons for Large-Scale Quantum Photonic Systems (Phys. Rev. X)

Researchers achieve advance in generating quantum states of light in Silicon photonic circuits (EECS News)

Professor Dirk R. Englund

Quantum Photonics Group