Nature Photonics - AOP - nature.com science feeds Nature Photonics offers a unique mix of news and reviews alongside top-quality research papers. Published monthly, in print and online, the journal reflects the entire spectrum of photonics and optics. http://www.nature.com/nphoton/current_issue/ Nature Publishing Group en © Nature Publishing Group Nature Photonics 1748-3387 1748-3395 © Nature Publishing Group permissions@nature.com Nature Photonics http://www.nature.com/includes/rj_globnavimages/nphoton_logo.gif http://www.nature.com/nphoton/ Non-resonant dot–cavity coupling and its potential for resonant single-quantum-dot spectroscopy http://feeds.nature.com/~r/nphoton/rss/aop/~3/30PZbwHf3hY/nphoton.2009.215 Mechanisms of distinct resonance in microcavities driven by strongly detuned single quantum dots are not well understood. Investigation of non-resonant dot–cavity coupling of individual quantum dots in micropillars now suggests a dominant role of phonon-mediated dephasing. This new perspective may have implications for single-photon sources, quantum information applications and spectroscopy. Non-resonant dot–cavity coupling and its potential for resonant single-quantum-dot spectroscopy

Nature Photonics. doi:10.1038/nphoton.2009.215

Authors: S. Ates, S. M. Ulrich, A. Ulhaq, S. Reitzenstein, A. Löffler, S. Höfling, A. Forchel & P. Michler

]]> Non-resonant dot–cavity coupling and its potential for resonant single-quantum-dot spectroscopy S. Ates S. M. Ulrich A. Ulhaq S. Reitzenstein A. Löffler S. Höfling A. Forchel P. Michler doi:10.1038/nphoton.2009.215 Nature Photonics 2009-11-22 Nature Photonics 2009-11-22 10.1038/nphoton.2009.215 http://dx.doi.org/10.1038/nphoton.2009.215 Letter http://dx.doi.org/10.1038/nphoton.2009.215 Terahertz amplifier based on gain switching in a quantum cascade laser http://feeds.nature.com/~r/nphoton/rss/aop/~3/6nJIWfHoYTc/nphoton.2009.213 An amplifier for terahertz pulses is demonstrated using an Auston switch to perform ultrafast gain switching in a quantum cascade laser. The approach may benefit terahertz imaging and sensing schemes as it overcomes the phenomenon of gain clamping, which usually limits the amplification available in a laser. Terahertz amplifier based on gain switching in a quantum cascade laser

Nature Photonics. doi:10.1038/nphoton.2009.213

Authors: Nathan Jukam, Sukhdeep S. Dhillon, Dimitri Oustinov, Julien Madeo, Christrophe Manquest, Stefano Barbieri, Carlo Sirtori, Suraj P. Khanna, Edmund. H. Linfield, A. Giles Davies & Jérôme Tignon

]]> Terahertz amplifier based on gain switching in a quantum cascade laser Nathan Jukam Sukhdeep S. Dhillon Dimitri Oustinov Julien Madeo Christrophe Manquest Stefano Barbieri Carlo Sirtori Suraj P. Khanna Edmund. H. Linfield A. Giles Davies Jérôme Tignon doi:10.1038/nphoton.2009.213 Nature Photonics 2009-11-22 Nature Photonics 2009-11-22 10.1038/nphoton.2009.213 http://dx.doi.org/10.1038/nphoton.2009.213 Letter http://dx.doi.org/10.1038/nphoton.2009.213 Optimal quantum cloning of orbital angular momentum photon qubits through Hong–Ou–Mandel coalescence http://feeds.nature.com/~r/nphoton/rss/aop/~3/V4v8MJVVFvM/nphoton.2009.214 The first observation of the Hong–Ou–Mandel coalescence of photons with orbital angular momentum (OAM) is demonstrated, and this is exploited for optimal quantum cloning of OAM-encoded qubits. OAM states may function as units of quantum information in higher-dimensional space and allow increased information content per photon. Optimal quantum cloning of orbital angular momentum photon qubits through Hong–Ou–Mandel coalescence

Nature Photonics. doi:10.1038/nphoton.2009.214

Authors: Eleonora Nagali, Linda Sansoni, Fabio Sciarrino, Francesco De Martini, Lorenzo Marrucci, Bruno Piccirillo, Ebrahim Karimi & Enrico Santamato

]]> Optimal quantum cloning of orbital angular momentum photon qubits through Hong–Ou–Mandel coalescence Eleonora Nagali Linda Sansoni Fabio Sciarrino Francesco De Martini Lorenzo Marrucci Bruno Piccirillo Ebrahim Karimi Enrico Santamato doi:10.1038/nphoton.2009.214 Nature Photonics 2009-11-22 Nature Photonics 2009-11-22 10.1038/nphoton.2009.214 http://dx.doi.org/10.1038/nphoton.2009.214 Letter http://dx.doi.org/10.1038/nphoton.2009.214 A passively mode-locked external-cavity semiconductor laser emitting 60-fs pulses http://feeds.nature.com/~r/nphoton/rss/aop/~3/NRpb4HaAknE/nphoton.2009.216 A compact source of 60-fs pulses is demonstrated, based on a semiconductor laser that is mode-locked using a saturable absorber mirror in an external cavity. A passively mode-locked external-cavity semiconductor laser emitting 60-fs pulses

Nature Photonics. doi:10.1038/nphoton.2009.216

Authors: Adrian H. Quarterman, Keith G. Wilcox, Vasilis Apostolopoulos, Zakaria Mihoubi, Stephen P. Elsmere, Ian Farrer, David A. Ritchie & Anne Tropper

]]> A passively mode-locked external-cavity semiconductor laser emitting 60-fs pulses Adrian H. Quarterman Keith G. Wilcox Vasilis Apostolopoulos Zakaria Mihoubi Stephen P. Elsmere Ian Farrer David A. Ritchie Anne Tropper doi:10.1038/nphoton.2009.216 Nature Photonics 2009-11-22 Nature Photonics 2009-11-22 10.1038/nphoton.2009.216 http://dx.doi.org/10.1038/nphoton.2009.216 Letter http://dx.doi.org/10.1038/nphoton.2009.216 Tuning a terahertz wire laser http://feeds.nature.com/~r/nphoton/rss/aop/~3/UhL5ptiG3UI/nphoton.2009.218 A terahertz wire laser with an unprecedented tuning range of ∼137 GHz has been demonstrated. This scheme relies on bringing dielectric or metallic structures into close proximity with the wire, thus modifying the properties of its guided mode. Tuning a terahertz wire laser

Nature Photonics. doi:10.1038/nphoton.2009.218

Authors: Qi Qin, Benjamin S. Williams, Sushil Kumar, John L. Reno & Qing Hu

]]> Tuning a terahertz wire laser Qi Qin Benjamin S. Williams Sushil Kumar John L. Reno Qing Hu doi:10.1038/nphoton.2009.218 Nature Photonics 2009-11-22 Nature Photonics 2009-11-22 10.1038/nphoton.2009.218 http://dx.doi.org/10.1038/nphoton.2009.218 Article http://dx.doi.org/10.1038/nphoton.2009.218