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Two-photon quantum interference in integrated multi-mode interference devices
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DOI：10.1364/OE.21.023401.png)
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Abstract
En 中文
Multi-mode interference (MMI) devices fabricated in silicon oxynitride (SiON) with a refractive index contrast of 2.4% provide a highly compact and stable platform for multi-photon non-classical interference. MMI devices can introduce which-path information for photons propagating in the multi-mode section which can result in degradation of this non-classical interference. We theoretically derive the visibility of quantum interference of two photons injected in a MMI device and predict near unity visibility for compact SiON devices. We complement the theoretical results by experimentally demonstrating visibilities of up to 97.7% in 2 x 2 MMI devices without the requirement of narrow-band photons. (C) 2013 Optical Society of America
Keywords:
COUPLERS
PHOTONS
COMPUTERS
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