Integrated Source of Spectrally Filtered Correlated Photons for Large-Scale Quantum Photonic Systems

By Nicholas Christopher Harris, D. Grassani, A. Simbula, M. Pant, M. Galli, T. Baehr‐Jones, Michael Hochberg, Dirk Englund, D. Bajoni, C. Galland. 2014

184 citations recorded by the source corpus.

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.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/20eec0afd2aa7fa862217f2f74136b2134184099

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Advances in quantum cryptography (2019, unknown): “wave mixing (SFWM) have been demonstrated without the need of any off-chip filtering [307, 308].”
Large-scale quantum photonic circuits in silicon (2016, methodology): “[38], photon pairs were generated on chip and then transferred to a second chip using single-mode, polarization maintaining optical fibers, which included another distributed Bragg reflector resulting in a total pump isolation of more than 150 dB.”
Scalable Integration of Long-Lived Quantum Memories into a Photonic Circuit (2014, background): “The strong background seen in the optical measurements could be reduced with a distributed Bragg reflector (DBR) at the excitation laser wavelength integrated into the SiN waveguide near the diamond-coupling region [34,35].”