High Visibility Time-Energy Entangled Photons from a Silicon Nanophotonic Chip
| Autor: | Wei Jiang, Qiang Lin, Xiyuan Lu, Daniel Mulkey, Steven Rogers |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Photon
Silicon FOS: Physical sciences Physics::Optics chemistry.chemical_element Quantum entanglement 01 natural sciences law.invention 010309 optics Four-wave mixing Resonator Photon entanglement law 0103 physical sciences Electrical and Electronic Engineering 010306 general physics Physics Quantum Physics business.industry Optical microcavity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry Optoelectronics Photonics Quantum Physics (quant-ph) business Optics (physics.optics) Physics - Optics Biotechnology |
| Zdroj: | ACS Photonics. 3:1754-1761 |
| ISSN: | 2330-4022 |
| DOI: | 10.1021/acsphotonics.6b00423 |
| Popis: | Advances in quantum photonics have shown that chip-scale quantum devices are translating from the realm of basic research to applied technologies. Recent developments in integrated photonic circuits and single photon detectors indicate that the bottleneck for fidelity in quantum photonic processes will ultimately lie with the photon sources. We present and demonstrate a silicon nanophotonic chip capable of emitting telecommunication band photon pairs that exhibit the highest raw degree of time-energy entanglement from a micro/nanoscale source, to date. Biphotons are generated through cavity-enhanced spontaneous four-wave mixing (SFWM) in a high-Q silicon microdisk resonator, wherein the nature of the triply-resonant generation process leads to a dramatic Purcell enhancement, resulting in highly efficient pair creation rates as well as extreme suppression of the photon noise background. The combination of the excellent photon source and a new phase locking technique, allow for the observation of a nearly perfect coincidence visibility of (96.6 $\pm$ 1.1)$\%$, without any background subtraction, at a large pair generation rate of (4.40 $\pm$ 0.07) $\times$ 10$^5$ pairs/s. |
| Databáze: | OpenAIRE |
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