Entanglement generation using silicon wire waveguide
Hiroki Takesue, Yasuhiro Tokura, Hiroshi Fukuda, Tai Tsuchizawa,, Toshifumi Watanabe, Koji Yamada, and Sei-ichi Itabashi
TL;DR
This paper demonstrates the first experiment of entanglement generation using a silicon wire waveguide, producing high-purity time-bin entangled photons with significant interference visibility, advancing integrated quantum photonics.
Contribution
It introduces a novel method of generating entangled photons directly in silicon waveguides without temperature control, showing practical integration potential.
Findings
Generated high-purity time-bin entangled photons
Achieved >73% two-photon interference visibility
Demonstrated entanglement in a compact silicon waveguide
Abstract
We report the first entanglement generation experiment that utilizes a silicon waveguide. Using spontaneous four-wave mixing in a 1.09-cm-long silicon wire waveguide, we generated 1.5-um, high-purity time-bin entangled photons without temperature control, and observed a two-photon interference fringe with >73% visibility.
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