Proceedings ArticleDOI
Strong coupling in a single quantum dot semiconductor microcavity system
Stephan Reitzenstein,G. Sek,G. Sek,Andreas Löffler,C. Hofmann,S. Kuhn,Johann Peter Reithmaier,Johann Peter Reithmaier,Leonid Veniaminovich Keldysh,V. D. Kulakovskii,T. L. Reinecke,Alfred Forchel +11 more
- Vol. 6115, pp 262-269
TLDR
In this article, a planar cavity quantum electrodynamics (cQED) system based on a low density In0.3Ga 0.7As quantum layer placed as the active layer in a high quality planar AlAs/GaAs distributed Bragg reflector cavity grown by molecular beam epitaxy is described.Abstract:
Properties of atom-like emitters in cavities are successfully described by cavity quantum electrodynamics (cQED). We
report on cavity quantum electrodynamics (cQED) experiments in a single quantum dot semiconductor system. CQED,
which is a very active research field in optics and solid state physics, can be divided into a weak and a strong coupling
regime. In case of weak coupling, the spontaneous emission rate of an atom-like emitter, e.g. a single quantum dot
exciton, can be enhanced or reduced compared to the value in vacuum in an irreversible emission process. In contrast, a
reversible energy exchange between the emitter and the cavity mode takes place when the conditions for strong coupling
are fulfilled. We investigate weak as well as strong coupling in a system based on a low density In0.3Ga 0.7As quantum
dot layer placed as the active layer in a high quality planar AlAs/GaAs distributed Bragg reflector cavity grown by
molecular beam epitaxy. Using electron beam lithography and deep plasma etching, micropillars with high Q-factors
(up to 43.000 for 4 μm diameter) were realized from the planar cavity structure. Due to the high oscillator strength of
the In0.3Ga 0.7As quantum dots together with a small mode volume in high finesse micropillar cavities it is possible to
observe strong coupling characterized by a vacuum Rabi splitting of 140 μeV. The fabrication of high-Q micropillar
cavities as well as conditions necessary to realize strong coupling in the present system are discussed in detail.read more
Citations
More filters
Journal ArticleDOI
Photonics and optoelectronics of 2D semiconductor transition metal dichalcogenides
Kin Fai Mak,Jie Shan +1 more
TL;DR: In this paper, the electronic and optical properties and the recent progress in applications of 2D semiconductor transition metal dichalcogenides with emphasis on strong excitonic effects, and spin- and valley-dependent properties are reviewed.
Journal ArticleDOI
Circuit quantum electrodynamics in the ultrastrong-coupling regime
T. Niemczyk,Frank Deppe,Hans Huebl,Edwin P. Menzel,Fredrik Hocke,M. J. Schwarz,Juan José García-Ripoll,David Zueco,Thomas Hümmer,Enrique Solano,Enrique Solano,Achim Marx,Rudolf Gross +12 more
TL;DR: In this article, it was shown that the Jaynes-cummings model breaks down in the regime of ultrastrong coupling between light and matter, and that higher-order processes are possible.
Journal ArticleDOI
A highly efficient single-photon source based on a quantum dot in a photonic nanowire
Julien Claudon,Joël Bleuse,N. S. Malik,M. Bazin,Périne Jaffrennou,Niels Gregersen,Christophe Sauvan,Philippe Lalanne,Jean-Michel Gérard +8 more
TL;DR: In this paper, an InAs quantum dot embedded in a GaAs photonic nanowire with carefully tailored ends was used to achieve a record source efficiency of 0.72, combined with pure single-photon emission.
Journal ArticleDOI
Resolving photon number states in a superconducting circuit
David Schuster,Andrew Houck,J. A. Schreier,Andreas Wallraff,Andreas Wallraff,Jay M. Gambetta,Alexandre Blais,Alexandre Blais,Luigi Frunzio,Johannes Majer,Blake R. Johnson,Michel Devoret,S. M. Girvin,Robert Schoelkopf +13 more
TL;DR: A circuit QED experiment is reported in the strong dispersive limit, a new regime where a single photon has a large effect on the qubit without ever being absorbed, the basis of a logic bus for a quantum computer.
Journal ArticleDOI
Sub-cycle switch-on of ultrastrong light–matter interaction
G. Gunter,Aji A. Anappara,Aji A. Anappara,J. Hees,Alexander Sell,Giorgio Biasiol,Lucia Sorba,Lucia Sorba,S. De Liberato,S. De Liberato,Cristiano Ciuti,Alessandro Tredicucci,Alfred Leitenstorfer,Rupert Huber +13 more
TL;DR: This work uses a quantum-well waveguide structure to optically tune light–matter interaction from weak to ultrastrong and turn on maximum coupling within less than one cycle of light, and directly monitors how a coherent photon population converts to cavity polaritons during abrupt switching.