Hughes at Queen's Home

S. Hughes Group, Department of Physics, Queen's University, Canada

Theoretical and Computational Research on Nanophotonics and Quantum Optics

Welcome
Thanks for visiting out website. We carry out theoretical and computational investigations of the light-matter processes in nanostructures, and explore the consequences of these for photonics applications and next-generation technologies. The nanoscale light-matter interaction regime is sometimes termed "Nanophotonics" or "Nano-Quantum-Optics." Our research blends a mix of nano physics, condensed matter physics, optics, quantum mechanics, and computational physics. We collaborate with external researchers worldwide and locally at Queen's and within Canada. To learn more about our research activities, you can browse some of our recent publications under the research link above.

Four Selected Research Highlights
A): S. Hughes and H. J. Carmichael, Stationary inversion of a two level system coupled to an off-resonant cavity with strong dissipation, Phys. Rev. Lett. 107, 193601 (2011) -- Click on the figure to read the paper:

B): C. Roy and S. Hughes, Phonon-dressed Mollow triplet in the regime of cavity-QED: Excitation-induced dephasing and nonperturbative cavity feeding effects, Phys. Rev. Lett. 106, 247403 (2011) -- Click on the figure to read the paper:

C): M. Patterson, S. Hughes, S. Combie, N.-V. Quynh Tran, A. De Rossi, R. Gabet and Y. Jaouen, Disorder induced coherent-scattering in slow light photonic crystal waveguides, Phys. Rev. Lett. 102, 253903 (2009) -- Click on the figure to read the paper:

D): V.S.C. Manga Rao and S. Hughes, Single quantum dot spontaneous emission in a finite-size photonic crystal waveguide: Proposal for an efficient ''on chip'' single photon gun, Phys. Rev. Lett. 99, 193901 (2007) [Editor's Suggestion] -- Click on the figure to read the paper:
Current Research Interests > Light-matter interactions in photonic crystals and nanophotonics
> Single and entangled photon pair emitters using quantum dots
> Quantum optics in semicondutor nanostructures
> Electron-phonon scattering in semiconductor cavity-QED
> Nano-engineered light-induced forces
> Phononic bandgaps and optomechanical resonators
> Theory of disorder on light scattering in nanostructures
> Classical and quantum optical properties of metals and metamaterials
> Computational nanophotonics and high-performance computing

Open Positions
**We currently have an opening for a post-doctoral fellow position. Our interests include the theory and analysis of light-matter interactions in photonic nanostructures, on-chip single photon emitters, computational nanophotonics, semiconductor quantum optics and quantum plasmonics. Please enquire by email for more details.**
* Post-doctoral fellows: Please inquire.
* Graduate students: I typically look for one or two new graduate students per year. [See "Opportunities" for more details.]

Recent News/Papers
* C. Roy, H. Kim, E. Waks, and S. Hughes, Anomalous phonon-mediated damping of a driven quantum dot embedded in a high-Q microcavity, Accepted for publication in Photonics and Nanostructures: Fundamentals and Applications (Special Issue) (May, 2012)
* C. Van Vlack and S. Hughes, Finite-difference time-domain technique as an efficient tool for obtaining the regularized Green function: applications to the local field problem in quantum optics for inhomogeneous lossy materials, e-print: arXiv:1203.6365 (Mar, 2012)- submitted to Optics Letters.
*J104. Philip Kristensen, Cole Van Vlack, Stephen Hughes, Generalized mode volume for leaky optical cavities, Published in Optics Letters (May, 2012)
*J103. Charles A. Foell, Ellen Schelew, Haijun Qiao, Keith A. Abel, Stephen Hughes, Frank C. J. M. van Veggel, and Jeff F. Young, Saturation Behaviour of Colloidal PbSe Quantum Dot Exciton Emission Coupled into Silicon Photonic Circuits, Published in Optics Express (Apr, 2012)
*J102. C. Roy and S. Hughes, Polaron master equation theory of the quantum-dot Mollow triplet in a semiconductor cavity-QED system, Published in PRB (Mar, 2012)
*J101. C. Van Vlack, P. T. Kristensen, and S. Hughes, Spontaneous Emission Spectra and Quantum Light-Matter Interactions from a Strongly-Coupled Quantum Dot Metal-Nanoparticle System, Published in Phys. Rev. B (Feb, 2012)
*J100. S. Hughes and C. Roy, Nonlinear photon transport in a semiconductor waveguide-cavity system containing a single quantum dot: Anharmonic cavity-QED regime, Published in Phys. Rev. B (Jan, 2012)
*J99. C. Roy and S. Hughes, Influence of electron-acoustic phonon scattering on intensity power broadening in a coherently driven quantum-dot cavity system, Published in Phys. Rev. X (Nov, 2011)
*J98. S. Hughes and H. J. Carmichael, Stationary inversion of a two level system coupled to an off-resonant cavity with strong dissipation, Published in Phys. Rev. Lett. (Oct, 2011)
*J97. Benjamin Zaks, Dominik Stehr, Tuan-Anh Truong, Pierre M. Petroff, Stephen Hughes, Mark S. Sherwin, THz driven quantum wells: Coulomb interactions and Stark shifts in the ultrastrong coupling regime, Published in New J. of Phys (Aug, 2011)
*J96. C. Roy and S. Hughes, Phonon-dressed Mollow triplet in the regime of cavity-QED: Excitation-induced dephasing and nonperturbative cavity feeding effects, Published in Phys. Rev. Lett. (June, 2011).
*J95. C. Van Vlack, Peijun Yao, and S. Hughes, Optical forces between coupled plasmonic nanoparticles near metal surfaces and negative index material waveguides, Published in Phys. Rev. B (June, 2011)
*J94. P. K. Pathak and S. Hughes, Coherent generation of time-bin entangled photon pairs using the biexciton cascade and cavity-assisted piecewise adiabatic passage Published in Phys. Rev. B (June, 2011)

*J93. S. Hughes, P. Yao, F. Milde, A. Knorr, D. Dalacu, K. Mnaymneh, V. Sazonova, P. J. Poole, G. C. Aers, J. Lapointe, R. Cheriton, and R. L. Williams, Influence of electron-acoustic phonon scattering on off-resonant cavity feeding within a strongly coupled quantum-dot cavity system, Published in Phys. Rev. B, (April, 2011)
*J92. P. T. Kristensen, J. Mork, P. Lodahl, and S. Hughes, Decay dynamics of radiatively coupled quantum dots in photonic crystal slabs, Published in Phys. Rev. B (Feb, 2011)
*J91. S. Reitzenstein, C. Bockler, A. Loffler, S. Hofling, L. Worschech, A. Forchel, P. Yao, and S. Hughes, Polarization-dependent strong coupling in elliptical high-Q micropillar cavities, Published in Phys. Rev. B (Dec, 2010).
*J90. M. Patterson and S. Hughes, Theory of disorder-induced multiple scattering and light localization in slow-light photonic crystal waveguides, Published in Journal of Optics, Special Issue on Slow Light (Oct, 2010). [Selected as one of the journal's Highlights of 2010]
*J89. P. K. Pathak and S. Hughes, Coherently-triggered single photons from a quantum-dot cavity system, Published in Phys. Rev. B (July 2010)
* Our work on understanding disorder-induced scattering effects in photonic crystal waveguides, with our collaborators at Thales and Telecom ParisTech, is highlighted by the SPIE Newsroom: Toward a miniature optical true-time delay line (June, 2010)
*J88. M. Patterson and S. Hughes, Interplay between disorder-induced scattering and local field effects in photonic crystal waveguides, Published in Phys. Rev. B (June, 2010)
*J87. P. Yao, V.S.C. Manga Rao, and S. Hughes, On-chip single photon sources using planar photonic crystals and single quantum dots, Published in Laser and Photonics Reviews, and selected as the Editor's Choice. (June, 2010)
*J86. C. Kistner, K. Morgener, S. Reitzenstein, C. Schneider, S. Hofling, L. Worschech, A. Forchel, P. Yao, and S. Hughes, Strong coupling in a quantum dot micropillar system under electrical current injection, Published in Appl. Phys. Lett. (June, 2010).

*J85. E. Illes and S. Hughes, Photon antibunching in strongly coupled exciton--semiconductor cavity systems: Role of off-resonant coupling to multiple excitons, Published in Phys. Rev. B. (Rapid Communucations) (Mar, 2010).
*J84. Peijun Yao, P. K. Pathak, E. Illes, S. Hughes, S. Munch, S. Reitzenstein, P. Franeck, A. Loffer, T. Heindel, S. Hofling, L. Worschech, and A. Forchel , Nonlinear photoluminescence spectra from a quantum-dot--cavity system: Interplay of pump-induced stimulated emission and anharmonic cavity QED, Published in Phys. Rev B. (Jan, 2010).
*J83. T. Tawara, H. Kamada, T. Tanabe, T. Sogawa, H. Okamoto, P. Yao, P. K. Pathak, and S. Hughes, Cavity-QED assisted attraction between a cavity mode and an exciton mode in a planar photonic-crystal cavity, Published in Optics Express (Jan, 2010).

... Archived List