Journal ArticleDOI
Ultralow-power all-optical RAM based on nanocavities
Kengo Nozaki,Akihiko Shinya,Shinji Matsuo,Yasumasa Suzaki,Toru Segawa,Tomonari Sato,Yoshihiro Kawaguchi,Ryo Takahashi,Masaya Notomi +8 more
TLDR
Using photonic crystal cavities with a buried heterostructure design, the authors demonstrated all-optical RAM at power levels 300 times lower than previous attempts, which could enable low-power large-scale optical RAM systems for handling high-bit-rate optical signals.Abstract:
Using photonic crystal cavities with a buried heterostructure design, scientists demonstrate all-optical RAM at power levels 300 times lower than previous attempts. The 30 nW devices could enable low-power large-scale optical RAM systems for handling high-bit-rate optical signals.read more
Citations
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Journal ArticleDOI
All-Optical Signal Processing
TL;DR: This work revisits advances in the key enabling technologies that led to recent research in optical signal processing for digital signals that are encoded in one or more of these dimensions.
Journal ArticleDOI
Large-scale integration of wavelength-addressable all-optical memories on a photonic crystal chip
Eiichi Kuramochi,Kengo Nozaki,Akihiko Shinya,Koji Takeda,Tomonari Sato,Shinji Matsuo,Hideaki Taniyama,Hisashi Sumikura,Masaya Notomi +8 more
TL;DR: In this article, a large-scale densely integrated optical memory on a single photonic crystal chip is demonstrated, where the wavelength division multiplexing (WDM) capabilities of nanophotonic memories are exploited for optical addressing.
Journal ArticleDOI
Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities.
TL;DR: It is shown that the extreme light concentration in the design can enable ultrastrong Kerr nonlinearities, even at the single-photon level, which open new directions in cavity quantum electrodynamics, spectroscopy, and quantum nonlinear optics.
Journal ArticleDOI
Photonic crystal nanocavity with a Q factor exceeding eleven million.
TL;DR: Repeated thermal oxidation and an oxide removal process applied after the removal of the buried oxide layer underneath the nanocavities realized an experimental Q factor greater than eleven million, which is the highest experimental Q ever recorded.
Journal ArticleDOI
Automated optimization of photonic crystal slab cavities
Momchil Minkov,Vincenzo Savona +1 more
TL;DR: A genetic algorithm is used to find a global maximum of the quality factor of defect-cavities in photonic crystal slabs, by varying the positions of few neighbouring holes, and consistently finds Q-values above one million – one order of magnitude higher than previous designs.
References
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Proceedings Article
Optical microcavities
TL;DR: In quantum optical devices, microcavities can coax atoms or quantum dots to emit spontaneous photons in a desired direction or can provide an environment where dissipative mechanisms such as spontaneous emission are overcome so that quantum entanglement of radiation and matter is possible.
Journal Article
Optical microcavities : Photonic technologies
TL;DR: Optical microcavities confine light to small volumes by resonant recirculation as discussed by the authors, and are indispensable for a wide range of applications and studies, such as long-distance transmission of data over optical fibres; they also ensure narrow spot-size laser read/write beams in CD and DVD players.
Journal ArticleDOI
Carrier-induced change in refractive index of InP, GaAs and InGaAsP
TL;DR: In this article, the change in refractive index Delta n produced by injection of free carriers in InP, GaAs, and InGaAsP was theoretically estimated and the results were in reasonably good agreement with the limited experimental data available.