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Review | Top |
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Quantum nonlinear optics — photon by photon pp685 - 694 Darrick E. Chang, Vladan Vuletić and Mikhail D. Lukin doi:10.1038/nphoton.2014.192 This review article summarizes the emerging field of quantum nonlinear optics. Three major approaches to generate optical nonlinearities based on cavity quantum electrodynamics, atomic ensembles with large Kerr nonlinearities and strong atomic interactions are reviewed. Applications of quantum nonlinear optics and many-body physics with strongly interacting photons are also discussed. |
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Letters | Top |
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Sequentially timed all-optical mapping photography (STAMP) pp695 - 700 K. Nakagawa, A. Iwasaki, Y. Oishi, R. Horisaki, A. Tsukamoto et al. doi:10.1038/nphoton.2014.163 A single-shot burst camera has been developed that can generate motion pictures without performing repetitive measurements. It has a frame rate of 4.4 trillion frames per second and a high pixel resolution of 450 × 450 pixels, making it a powerful tool for observing difficult-to-reproduce or non-repetitive events in real time.
See also: Interview with Keiichi Nakagawa |
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Non-reciprocal phase shift induced by an effective magnetic flux for light pp701 - 705 Lawrence D. Tzuang, Kejie Fang, Paulo Nussenzveig, Shanhui Fan and Michal Lipson doi:10.1038/nphoton.2014.177 An effective magnetic field is generated on a chip and a non-reciprocal phase shift is demonstrated in an 8.35-mm-long interferometer. The magnitude of the non-reciprocal phase produced is comparable to that achievable with monolithically integrated magneto-optical materials.
See also: News and Views by Khanikaev & Alu |
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Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers pp706 - 709 N. Hartmann, W. Helml, A. Galler, M. R. Bionta, J. Grünert et al. doi:10.1038/nphoton.2014.164 Some X-ray free-electron laser facilities are pushing towards sub-10 fs pulses, making it desirable to reduce errors in X-ray/optical delay measurements to the 1 fs level. Researchers have now demonstrated X-ray measurements with a temporal resolution shorter than 1 fs, opening up new possibilities for time-resolved X-ray experiments. |
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Articles | Top |
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High-throughput optical screening of cellular mechanotransduction pp710 - 715 Jonathan L. Compton, Justin C. Luo, Huan Ma, Elliot Botvinick and Vasan Venugopalan doi:10.1038/nphoton.2014.165 A pulsed laser technique that induces mechanical stress in cells offers high-throughput testing of the effect of molecular agents on mechanotransduction in cells. |
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Ternary blend polymer solar cells with enhanced power conversion efficiency pp716 - 722 Luyao Lu, Tao Xu, Wei Chen, Erik S. Landry and Luping Yu doi:10.1038/nphoton.2014.172 The use of two, rather than one, donor polymers in an organic solar cell is shown to enhance charge separation, transport and recombination. |
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Through-skull fluorescence imaging of the brain in a new near-infrared window pp723 - 730 Guosong Hong, Shuo Diao, Junlei Chang, Alexander L. Antaris, Changxin Chen et al. doi:10.1038/nphoton.2014.166 Near-infrared photoluminescence from carbon nanotubes makes it possible to optically image the vasculature in the brain directly through the skull.
See also: News and Views by Madsen |
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Reduced spin measurement back-action for a phase sensitivity ten times beyond the standard quantum limit pp731 - 736 J. G. Bohnet, K. C. Cox, M. A. Norcia, J. M. Weiner, Z. Chen et al. doi:10.1038/nphoton.2014.151 The phase of a collection of spins is measured with a sensitivity ten times beyond the limit set by the quantum noise of an unentangled ensemble of 87Rb atoms. A cavity-enhanced probe of an optical cycling transition is employed to mitigate back-action associated with state-changing transitions induced by the probe. |
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Band filling with free charge carriers in organometal halide perovskites pp737 - 743 Joseph S. Manser and Prashant V. Kamat doi:10.1038/nphoton.2014.171 Femtosecond transient absorption spectroscopy measurements indicate that the dominant relaxation pathway for excited states in perovskite materials is by recombination of free electrons and holes. |
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Interview | Top |
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Femtophotography p774 Interview with Keiichi Nakagawa doi:10.1038/nphoton.2014.209 A burst-mode camera developed in Japan called STAMP with a femtosecond frame rate could become a powerful tool for studying ultrafast dynamics. Nature Photonics asked Keiichi Nakagawa about the technique. |
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