Gao J, McMillan JF, Wong CW. Nanophotonics: Remote on-chip coupling. Nat Photon. 2012;6(1):7–8.
Abstract: 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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Pile D. How many bits can a photon carry. Nat Photon. 2012;6(1):14–5.
Abstract: Quantum physics offers a way to enhance the amount of information a photon can carry, with potential applications in optical communication, lithography, metrology and imaging.
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Takesue H, Nam SW, Zhang Q, Hadfield RH, Honjo T, Tamaki K, et al. Quantum key distribution over a 40-dB channel loss using superconducting single-photon detectors. Nat Photon. 2007;1:343–8.
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Williams BS. Terahertz quantum-cascade lasers. Nature Photonics. 2007;1:517–25.
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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Hadfield RH. Single-photon detectors for optical quantum information applications. Nature Photonics. 2009;3:696–705.
Abstract: 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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