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Nozaki, Kengo; Shinya, Akihiko; Matsuo, Shinji; Suzaki, Yasumasa; Segawa, Toru; Sato, Tomonari; Kawaguchi, Yoshihiro; Takahashi, Ryo; Notomi, Masaya |
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Title |
Ultralow-power all-optical RAM based on nanocavities |
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2012 |
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Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
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6 |
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4 |
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248-252 |
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Optical random-access memory (o-RAM) has been regarded as one of the most difficult challenges in terms of replacing its various functionalities in electronic circuitry with their photonic counterparts. Nevertheless, it constitutes a key device in optical routing and processing. Here, we demonstrate that photonic crystal nanocavities with an ultrasmall buried heterostructure design can solve most of the problems encountered in previous o-RAMs. By taking advantage of the strong confinement of photons and carriers and allowing heat to escape efficiently, we have realized all-optical RAMs with a power consumption of only 30 nW, which is more than 300 times lower than the previous record, and have achieved continuous operation. We have also demonstrated their feasibility in multibit integration. This paves the way for constructing a low-power large-scale o-RAM system that can handle high-bit-rate optical signals. |
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RPLAB @ gujma @ |
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786 |
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Novotny, Lukas; van Hulst, Niek |
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Title |
Antennas for light |
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Journal Article |
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2011 |
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Nature Photonics |
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Nat. Photon. |
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5 |
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2 |
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83-90 |
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optical antennas |
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Optical antennas are devices that convert freely propagating optical radiation into localized energy, and vice versa. They enable the control and manipulation of optical fields at the nanometre scale, and hold promise for enhancing the performance and efficiency of photodetection, light emission and sensing. Although many of the properties and parameters of optical antennas are similar to their radiowave and microwave counterparts, they have important differences resulting from their small size and the resonant properties of metal nanostructures. This Review summarizes the physical properties of optical antennas, provides a summary of some of the most important recent developments in the field, discusses the potential applications and identifies the future challenges and opportunities. |
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RPLAB @ gujma @ |
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748 |
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Biercuk, Michael J. |
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A quantum spectrum analyser |
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Journal Article |
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2011 |
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Nature Physics |
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Nat. Phys. |
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7 |
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525–526 |
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Noise filters based on so-called dynamical decoupling pulse sequences can suppress decoherence in quantum systems. Turning this idea on its head now provides a new technique for studying the noise itself. |
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RPLAB @ gujma @ |
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826 |
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Clerk, Aashish |
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Quantum phononics: To see a SAW |
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2012 |
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Nature Physics |
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Nat. Phys. |
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8 |
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4 |
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256-257 |
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Mechanical oscillations of microscopic resonators have recently been observed in the quantum regime. This idea could soon be extended from localized vibrations to travelling waves thanks to a sensitive probe of so-called surface acoustic waves. |
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no |
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RPLAB @ gujma @ |
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811 |
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Author |
Raussendorf, Robert |
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Title |
Quantum computing: Shaking up ground states |
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2010 |
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Nature Physics |
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Nat. Phys. |
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6 |
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11 |
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840-841 |
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Measurement-based quantum computation with an Affleck-Kennedy-Lieb-Tasaki state is experimentally realized for the first time. |
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no |
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RPLAB @ gujma @ |
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834 |
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