Advance online publication
The latest research papers, published online ahead of print. These online versions are definitive and may be cited using the digital object identifier (DOI).
About advance online publicationLetters
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
Published online: 22 November 2009 | doi:10.1038/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.
Abstract - Non-resonant dot-cavity coupling and its potential for resonant single-quantum-dot spectroscopy | Full Text - Non-resonant dot–cavity coupling and its potential for resonant single-quantum-dot spectroscopy | PDF (445 KB) - Non-resonant dot–cavity coupling and its potential for resonant single-quantum-dot spectroscopy | Supplementary information
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
Published online: 22 November 2009 | doi:10.1038/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.
Abstract - Terahertz amplifier based on gain switching in a quantum cascade laser | Full Text - Terahertz amplifier based on gain switching in a quantum cascade laser | PDF (330 KB) - Terahertz amplifier based on gain switching in a quantum cascade laser | Supplementary information
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
Published online: 22 November 2009 | doi:10.1038/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.
Abstract - Optimal quantum cloning of orbital angular momentum photon qubits through Hong-Ou-Mandel coalescence | Full Text - Optimal quantum cloning of orbital angular momentum photon qubits through Hong–Ou–Mandel coalescence | PDF (351 KB) - Optimal quantum cloning of orbital angular momentum photon qubits through Hong–Ou–Mandel coalescence
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
Published online: 22 November 2009 | doi:10.1038/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.
Abstract - A passively mode-locked external-cavity semiconductor laser emitting 60-fs pulses | Full Text - A passively mode-locked external-cavity semiconductor laser emitting 60-fs pulses | PDF (261 KB) - A passively mode-locked external-cavity semiconductor laser emitting 60-fs pulses
Article
Tuning a terahertz wire laser
Qi Qin, Benjamin S. Williams, Sushil Kumar, John L. Reno & Qing Hu
Published online: 22 November 2009 | doi:10.1038/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.
Abstract - Tuning a terahertz wire laser | Full Text - Tuning a terahertz wire laser | PDF (490 KB) - Tuning a terahertz wire laser
Until print versions of AOP papers are published, they should be cited in the style "Author(s) Nature Photonics advance online publication, day month year (doi:10.1038/nphotonXXXXX)". Once the print version (identical to the AOP) is published, it should be cited as follows: "Author(s) Nature Photonics volume, page (year); advance online publication, (doi:10.1038/nphotonXXXXX)".
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