Whispering gallery resonances in semiconductor micropillars

Astratov, V. N.; Yang, S.; Lam, S.; Jones, B. D.; Sanvitto, D.; Whittaker, D. M.; Fox, A. M.; Skolnick, M. S.; Tahraoui, A.; Fry, P. W.; Hopkinson, M.
August 2007
Applied Physics Letters;8/13/2007, Vol. 91 Issue 7, p071115
Academic Journal
In this letter, the authors observe high quality (Q up to 20 000) whispering gallery modes (WGMs) with small modal volumes V∼0.3 μm3 in 4–5 μm Al(Ga)As/GaAs micropillars by employing an experimental geometry in which both excitation and collection of emission are in a direction normal to the sidewalls of the pillars. They show that WGMs provide at least two times larger values of the figure of merit for strong coupling applications Q/V compared to “photonic dot” states in pillars with comparable size.


Related Articles

  • Quantum Electrodynamics with Semiconductor Quantum Dots Coupled to Anderson-localized Random Cavities. Sapienza, Luca; Thyrrestrup, Henri; Stobbe, So\ren; Garcia, Pedro David; Smolka, Stephan; Lodahl, Peter // AIP Conference Proceedings;12/22/2011, Vol. 1399 Issue 1, p999 

    We demonstrate that the spontaneous emission decay rate of semiconductor quantum dots can be strongly modified by the coupling to disorder-induced Anderson-localized photonic modes. We experimentally measure, by means of time-resolved photoluminescence spectroscopy, the enhancement of the...

  • Frequency dependent electrical characteristics of PbS quantum dots. S. Chowdhury; A. Hussain; G. Ahmed; A. Choudhury // European Physical Journal - Applied Physics;May2008, Vol. 42 Issue 2, p113 

    PbS quantum dots (bare and silica coated) have been synthesized in PVA matrix with average size 10?nm and 9?nm. The capacitance-voltage (C-V) and current ?voltage (I-V) response of both bare and coated quantum dots have been recorded in different frequency range (Hz?MHz). Both the samples show...

  • Master equations for semiconductor cavity-QED. Roy, C.; Hughes, S. // AIP Conference Proceedings;10/5/2011, Vol. 1398 Issue 1, p33 

    We present a quantum optics formalism to study the dynamics of a coherently-driven semiconductor quantum dot interacting with an acoustic phonon bath and a high Q microcavity. A time-convolutionless master equation is derived in the polaron frame, where multiphoton and multiphoton effects are...

  • Spatial correlation-anticorrelation in strain-driven self-assembled InGaAs quantum dots. Wang, X.-D.; Liu, N.; Shih, C. K.; Govindaraju, S.; Holmes Jr., A. L. // Applied Physics Letters;8/23/2004, Vol. 85 Issue 8, p1356 

    We report evidence for the existence of anticorrelation in InGaAs/GaAs self-assembled quantum dots (QDs). We found that, as a function of the spacer layer thickness, the QDs between the neighboring layers are either vertically correlated (at small spacer thickness) or anticorrelated (at larger...

  • Off-resonant coupling between a single quantum dot and a nanobeam photonic crystal cavity. Rundquist, Armand; Majumdar, Arka; Vucˇkovic, Jelena // Applied Physics Letters;12/19/2011, Vol. 99 Issue 25, p251907 

    We demonstrate off-resonant coupling between a single quantum dot and a nanobeam photonic crystal cavity, under resonant excitation of the quantum dot or the cavity. These results are consistent with previous descriptions of off-resonant coupling as an incoherent phonon-mediated process. The...

  • Independent tuning of quantum dots in a photonic crystal cavity. Kim, Hyochul; Thon, Susanna M.; Petroff, Pierre M.; Bouwmeester, Dirk // Applied Physics Letters;12/14/2009, Vol. 95 Issue 24, p243107 

    One of the main obstacles to coupling two quantum dots (QDs) to a single nanocavity mode in a cavity quantum electrodynamics system is the ability to independently tune the QD frequencies. We demonstrate that in a GaAs photonic crystal membrane structure with two embedded QD layers, the QD...

  • Coherent generation of non-classical light on a chip via photon-induced tunnelling and blockade. Faraon, Andrei; Fushman, Ilya; Englund, Dirk; Stoltz, Nick; Petroff, Pierre; Vučković, Jelena // Nature Physics;Nov2008, Vol. 4 Issue 11, p859 

    Quantum dots in photonic crystals are interesting because of their potential in quantum information processing and as a testbed for cavity quantum electrodynamics. Recent advances in controlling and coherent probing of such systems open the possibility of realizing quantum networks originally...

  • Strong coupling through optical positioning of a quantum dot in a photonic crystal cavity. Thon, Susanna M.; Rakher, Matthew T.; Kim, Hyochul; Gudat, Jan; Irvine, William T. M.; Petroff, Pierre M.; Bouwmeester, Dirk // Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p111115 

    Single self-assembled InAs quantum dots embedded in GaAs photonic crystal defect cavities are a promising system for cavity quantum electrodynamics experiments and quantum information schemes. Achieving controllable coupling in these small mode volume devices is challenging due to the random...

  • Room temperature spontaneous emission enhancement from quantum dots in photonic crystal slab cavities in the telecommunications C band. Hostein, R.; Braive, R.; Larqué, M.; Lee, K.-H.; Talneau, A.; Le Gratiet, L.; Robert-Philip, I.; Sagnes, I.; Beveratos, A. // Applied Physics Letters;3/23/2009, Vol. 94 Issue 12, p123101 

    We report on the control of the spontaneous emission dynamics from InAsP self-assembled quantum dots emitting in the telecommunications C band and weakly coupled to the mode of a double heterostructure cavity etched on a suspended InP membrane at room temperature. The quality factor of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics