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| Author |
Nozaki, Kengo; Shinya, Akihiko; Matsuo, Shinji; Suzaki, Yasumasa; Segawa, Toru; Sato, Tomonari; Kawaguchi, Yoshihiro; Takahashi, Ryo; Notomi, Masaya |
Title  |
Ultralow-power all-optical RAM based on nanocavities |
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Journal Article |
| Year |
2012 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
6 |
Issue |
4 |
Pages |
248-252 |
| Keywords |
fromIPMRAS |
| Abstract |
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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786 |
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Pris, Andrew D.; Utturkar, Yogen; Surman, Cheryl; Morris, William G.; Vert, Alexey; Zalyubovskiy, Sergiy; Deng, Tao; Ghiradella, Helen T.; Potyrailo, Radislav A. |
| Title |
Towards high-speed imaging of infrared photons with bio-inspired nanoarchitectures |
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Journal Article |
| Year |
2012 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
6 |
Issue |
3 |
Pages |
195-200 |
| Keywords |
fromIPMRAS |
| Abstract |
Existing infrared detectors rely on complex microfabrication and thermal management methods. Here, we report an attractive platform of low-thermal-mass resonators inspired by the architectures of iridescent Morpho butterfly scales. In these resonators, the optical cavity is modulated by its thermal expansion and refractive index change, resulting in `wavelength conversion' of mid-wave infrared (3-8 µm) radiation into visible iridescence changes. By doping Morpho butterfly scales with single-walled carbon nanotubes, we achieved mid-wave infrared detection with 18-62 mK noise-equivalent temperature difference and 35-40 Hz heat-sink-free response speed. The nanoscale pitch and the extremely small thermal mass of individual `pixels' promise significant improvements over existing detectors. Computational analysis explains the origin of this thermal response and guides future conceptually new bio-inspired thermal imaging sensor designs. |
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785 |
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| Author |
Akalin, Tahsin |
| Title |
Terahertz sources: Powerful photomixers |
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Journal Article |
| Year |
2012 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
6 |
Issue |
2 |
Pages |
81 |
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fromIPMRAS |
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An efficient continuous-wave source of terahertz radiation that combines the outputs from two near-infrared semiconductor lasers in a novel photomixer looks set to benefit applications in spectroscopy and imaging. |
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RPLAB @ gujma @ |
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787 |
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| Author |
Williams, Benjamin S. |
| Title |
Terahertz quantum-cascade lasers |
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Journal Article |
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2007 |
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Nature Photonics |
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1 |
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517-525 |
| Keywords |
QCL review |
| Abstract |
Six years after their birth, terahertz quantum-cascade lasers can now deliver milliwatts or more of continuous-wave coherent radiation throughout the terahertz range — the spectral regime between millimetre and infrared wavelengths, which has long resisted development. This paper reviews the state-of-the-art and future prospects for these lasers, including efforts to increase their operating temperatures, deliver higher output powers and emit longer wavelengths. |
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632 |
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| Author |
Paiella, Roberto |
| Title |
Terahertz quantum cascade lasers: Going ultrafast |
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Journal Article |
| Year |
2011 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
5 |
Issue |
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Pages |
253–255 |
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fromIPMRAS |
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A new asynchronous coherent optical sampling method allows for the direct visualization of actively mode-locked quantum cascade laser pulses at terahertz wavelengths. |
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RPLAB @ gujma @ |
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774 |
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Gabay, Marc; Triscone, Jean-Marc |
| Title |
Superconductors: Terahertz superconducting switch |
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Journal Article |
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2011 |
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Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
5 |
Issue |
8 |
Pages |
447-449 |
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fromIPMRAS |
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The use of terahertz pulses to 'gate' interlayer charge transport in a superconductor could lead to a variety of new and interesting applications. |
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RPLAB @ gujma @ |
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777 |
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| Author |
Hadfield, Robert H. |
| Title |
Single-photon detectors for optical quantum information applications |
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Journal Article |
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2009 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nature Photonics |
| Volume |
3 |
Issue |
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Pages |
696-705 |
| Keywords |
SPD |
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The past decade has seen a dramatic increase in interest in new single-photon detector technologies. A major cause of this trend has undoubtedly been the push towards optical quantum information applications such as quantum key distribution. These new applications place extreme demands on detector performance that go beyond the capabilities of established single-photon detectors. There has been considerable effort to improve conventional photon-counting detectors and to transform new device concepts into workable technologies for optical quantum information applications. This Review aims to highlight the significant recent progress made in improving single-photon detector technologies, and the impact that these developments will have on quantum optics and quantum information science. |
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RPLAB @ gujma @ |
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678 |
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Kok, Pieter |
| Title |
Quantum optics: Entangled photons report for duty |
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Journal Article |
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2010 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
4 |
Issue |
8 |
Pages |
504-505 |
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fromIPMRAS |
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Entangled photons are a key ingredient in optical quantum technologies, but researchers have so far been unable to produce a single pair of entangled photons. Now, two groups from China and Austria independently report just that, with a technique that avoids the need to infer entanglement from detection signatures. |
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RPLAB @ gujma @ |
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772 |
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| Author |
Xu, XinAn; Wong, Chee Wei |
| Title |
Quantum optics: Correlations on a chip |
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Journal Article |
| Year |
2012 |
Publication |
Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
6 |
Issue |
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Pages |
75-76 |
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fromIPMRAS |
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Researchers have developed a semiconductor structure capable of supporting quantum correlations between photons and strong single-photon nonlinearities, thus paving the way for the development of chip-based devices for quantum secure communications and quantum information processing. |
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RPLAB @ gujma @ |
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782 |
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Santori, Charles; Beausoleil, Raymond G. |
| Title |
Quantum memory: Phonons in diamond crystals |
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Journal Article |
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2012 |
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Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
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6 |
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10-12 |
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fromIPMRAS |
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The demonstration that quantum information can be stored in a bulk-diamond crystal in the form of an optically excited phonon gives researchers a new type of mechanical solid-state quantum memory to explore. |
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RPLAB @ gujma @ |
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781 |
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Takesue, Hiroki; Nam, Sae Woo; Zhang, Qiang; Hadfield, Robert H.; Honjo, Toshimori; Tamaki, Kiyoshi; Yamamoto, Yoshihisa |
| Title |
Quantum key distribution over a 40-dB channel loss using superconducting single-photon detectors |
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2007 |
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Nature Photonics |
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Nat. Photon. |
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1 |
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343-348 |
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quantum cryptography, SSPD, QKD, DSP |
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RPLAB @ akorneev @ |
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609 |
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Wu, Ming C. |
| Title |
Optoelectronic tweezers |
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Journal Article |
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2011 |
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Nature Photonics |
Abbreviated Journal |
Nature Photon |
| Volume |
5 |
Issue |
6 |
Pages |
322-324 |
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fromIPMRAS |
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Using projected light patterns to form virtual electrodes on a photosensitive substrate, optoelectronic tweezers are able to grab and move micro- and nanoscale objects at will, facilitating applications far beyond biology and colloidal science. |
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RPLAB @ gujma @ |
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775 |
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Fazal, Furqan M.; Block, Steven M. |
| Title |
Optical tweezers study life under tension |
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Journal Article |
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2011 |
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Nature Photonics |
Abbreviated Journal |
Nat. Photon. |
| Volume |
5 |
Issue |
6 |
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318-321 |
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fromIPMRAS |
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Optical tweezers have become one of the primary weapons in the arsenal of biophysicists, and have revolutionized the new field of single-molecule biophysics. Today's techniques allow high-resolution experiments on biological macromolecules that were mere pipe dreams only a decade ago. |
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RPLAB @ gujma @ |
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776 |
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Yao, Xing-Can; Wang, Tian-Xiong; Xu, Ping; Lu, He; Pan, Ge-Sheng; Bao, Xiao-Hui; Peng, Cheng-Zhi; Lu, Chao-Yang; Chen, Yu-Ao; Pan, Jian-Wei |
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Observation of eight-photon entanglement |
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Journal Article |
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2012 |
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Nature Photonics |
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Nat. Photon. |
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6 |
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4 |
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225-228 |
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fromIPMRAS |
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The creation of increasingly large multipartite entangled states is not only a fundamental scientific endeavour in itself, but is also the enabling technology for quantum information. Tremendous experimental effort has been devoted to generating multiparticle entanglement with a growing number of qubits. So far, up to six spatially separated single photons have been entangled based on parametric downconversion. Multiple degrees of freedom of a single photon have been exploited to generate forms of hyper-entangled states. Here, using new ultra-bright sources of entangled photon pairs, an eight-photon interferometer and post-selection detection, we demonstrate for the first time the creation of an eight-photon Schrödinger cat state with genuine multipartite entanglement. The ability to control eight individual photons represents a step towards optical quantum computation, and will enable new experiments on, for example, quantum simulation, topological error correction and testing entanglement dynamics under decoherence. |
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RPLAB @ gujma @ |
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784 |
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Gao, Jie; McMillan, James F.; Wong, Chee Wei |
| Title |
Nanophotonics: Remote on-chip coupling |
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Journal Article |
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2012 |
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Nature Photonics |
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Nat. Photon. |
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6 |
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1 |
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7-8 |
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fromIPMRAS |
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Scientists have demonstrated strongly coupled photon states between two distant high-Q photonic crystal cavities connected by a photonic crystal waveguide. Remote dynamic control over the coupled states could aid the development of delay lines, optical buffers and qubit operations in both classical and quantum information processing. |
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