Micrometer-scale integrated silicon source of time-energy entangled photons
By D. Grassani, S. Azzini, Marco Liscidini, M. Galli, M. Strain, M. Sorel, J. Sipe, D. Bajoni. 2014
245 citations recorded by the source corpus.
Entanglement is a fundamental resource in quantum information processing. Several studies have explored the integration of sources of entangled states on a silicon chip, but the devices demonstrated so far require millimeter lengths and pump powers of the order of hundreds of milliwatts to produce an appreciable photon flux, hindering their scalability and dense integration. Microring resonators have been shown to be efficient sources of photon pairs, but entangled state emission has never been proven in these devices. Here we report the first demonstration, to the best of our knowledge, of a microring resonator capable of emitting time-energy entangled photons. We use a Franson experiment to show a violation of Bell’s inequality by more than seven standard deviations with an internal pair generation exceeding 107 Hz. The source is integrated on a silicon chip, operates at milliwatt and submilliwatt pump power, emits in the telecom band, and outputs into a photonic waveguide. These are all essential features of an entangled state emitter for a quantum photonic network.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/48b1fc5aa4a22fa102155c9e16cac38b65c9c249
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In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
- David J. Moss
- Roberto Morandotti
- Brent E. Little
- Xingyuan Xu
- Arnan Mitchell
- Jiayang Wu
- Xiaoxiao Xue
- Andrew M. Weiner
In Electrical and Electronic Engineering
- David J. Moss
- Roberto Morandotti
- Brent E. Little
- Xingyuan Xu
- Arnan Mitchell
- Xiaoxiao Xue
- Andrew M. Weiner
- Jiayang Wu
Citations in the corpus
- Micro-combs: A novel generation of optical sources (2017, background): “In [326], a double interferometer [349,350], unbalanced by ∆T ≫ τ (where τ is the coherence time of the signal and idler photons, to avoid first-order interference, ∆T ≈ 0.”
- Multifrequency sources of quantum correlated photon pairs on-chip: a path toward integrated Quantum Frequency Combs (2016, methodology): “While in this particular case only heralded single photons were generated, it has been shown that, for example, energy-time or time-bin entanglement can be generated using SFWM on chip [28, 29].”