Evaluating a Multi-Color Entangled-Photon Source for a Bosonic Silicon Quantum Circuit
- URL: http://arxiv.org/abs/2507.09851v1
- Date: Mon, 14 Jul 2025 01:21:36 GMT
- Title: Evaluating a Multi-Color Entangled-Photon Source for a Bosonic Silicon Quantum Circuit
- Authors: Koki Nagamachi, Hiroki Yamashita, Mikio Fujiwara, Shigehito Miki, Hirotaka Terai, Takafumi Ono,
- Abstract summary: spatially entangled photon states were created using a pair of silicon waveguides that produced signal and idler photons through SFWM.<n>We performed quantum state tomography on the bosonic system using a linear optical circuit.<n>This study demonstrates the feasibility of using photon-pair sources generated in silicon via SFWM in bosonic optical circuits.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We evaluated a multi-color two-photon entangled state generated in silicon via spontaneous four-wave mixing (SFWM) as a potential source for bosonic integrated circuits. Spatially entangled photon states were created using a pair of silicon waveguides that produced signal and idler photons through SFWM, allowing us to observe quantum interference between them. Assuming that the frequencies of the multi-color photons were nearly identical, we characterized the generated quantum state by performing quantum state tomography on the bosonic system using a linear optical circuit. This study demonstrates the feasibility of using photon-pair sources generated in silicon via SFWM in bosonic optical circuits and highlights their potential for a wide range of applications in silicon-based optical quantum technologies.
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