Journal ArticleDOI
Polariton Wave Packet Propagation in the Exciton Resonance of a Semiconductor
R.G. Ulbrich,G. W. Fehrenbach +1 more
TLDR
In this article, the first experimental observation of "slow" pulse propagation in the exciton-polariton resonance of a direct-gap semiconductor was reported, where the propagation delay of short light pulses transmitted through a 3.7-m-thick GaAs crystal was measured directly with a cross-correlation technique.Abstract:
This paper reports the first experimental observation of "slow" pulse propagation in the exciton-polariton resonance of a direct-gap semiconductor. The propagation delay of short light pulses transmitted through a 3.7-\ensuremath{\mu}m-thick GaAs crystal was measured directly with a cross-correlation technique. Polariton group velocities from $\frac{{c}_{\mathrm{vac}}}{3.6}$ down to $\frac{{c}_{\mathrm{vac}}}{2000}$ were found when the wave-packet center frequency was tuned through the $n=1$ exciton resonance.read more
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Journal ArticleDOI
Colloquium: Trapping and manipulating photon states in atomic ensembles
TL;DR: In this article, the authors review several ideas indicating how such techniques can be used for accurate manipulation of quantum states of atomic ensembles and photons and present possible mechanisms for manipulating the quantum states.
Slow-Light in Semiconductor Quantum Wells
Pei-Cheng Ku,Forrest Sedgwick,Connie J. Chang-Hasnain,Phedon Palinginis,Tao Li,Hailin Wang,Shu-Wei Chang,Shun Lien Chuang +7 more
TL;DR: In this article, the authors demonstrate slow light via population oscillation in semiconductor quantum-well structures for the first time and infer group velocity as low as 9600 m/s from the experimentally measured dispersive characteristics.
Journal ArticleDOI
Slow light in semiconductor quantum wells.
Pei-Cheng Ku,Forrest Sedgwick,Connie J. Chang-Hasnain,Phedon Palinginis,Tao Li,Hailin Wang,Shu-Wei Chang,Shun Lien Chuang +7 more
TL;DR: In this article, the authors demonstrate slow light via population oscillation in semiconductor quantum-well structures for the first time and infer group velocity as low as 9600 m/s from the experimentally measured dispersive characteristics.
Journal ArticleDOI
The dispersion of excitons, polaritons and biexcitons in direct-gap semiconductors
TL;DR: In this article, the authors present results obtained for excitons, polaritons and biexcitons in semiconductors with conduction band minimum and valence band maximum at the same point of the Brillouin zone (direct-gap materials) and a band to band transition which is dipole allowed.
Journal ArticleDOI
Organic photonics: prospective nano/micro scale passive organic optical waveguides obtained from π-conjugated ligand molecules.
TL;DR: In this paper, the potential of passive organic optical waveguides in future organic nanophotonics is discussed, and some noteworthy applications such as remote sensing, excitation and defect identification are highlighted.