Dynamic trapping and releasing photonics beyond delay-bandwidth limit in cascaded photonic crystal nanocavities

Controlling the flow of light on-chip is of great importance for quantum computing and optical signal processing. In this paper, we present a theoretical study to reveal the underlying physics of how to effectively trap, store and release a signal pulse, and eventually break the delay-bandwidth limi...

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Bibliographic Details
Published in:New journal of physics 2020-06, Vol.22 (6), p.63030
Main Authors: Xu, Zhe-Ming, Li, Chao, Wu, Jun-Fang
Format: Article
Language:English
Subjects:
Bandwidths
Delay
delay-bandwidth product
electromagnetically induced transparency
light storage
nanocavities
Optical communication
photonic crystal
Photonic crystals
Physics
Quantum computing
Signal processing
Stability
Standing waves
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Summary:Controlling the flow of light on-chip is of great importance for quantum computing and optical signal processing. In this paper, we present a theoretical study to reveal the underlying physics of how to effectively trap, store and release a signal pulse, and eventually break the delay-bandwidth limit, based on controllable EIT-like effect in dynamically tuned standing-wave cascaded nanocavities. Using this mechanism, we design a compact silicon photonic crystal system with long storing time and a delay-bandwidth product over 460, which is about two orders of magnitude greater than the reported results obtained by other methods based on static resonator system, and the trapped signal pulse can be released on demand.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ab8e58