30,304 research outputs found
On the coupling of two quantum dots through a cavity mode
The effective coupling of two distant quantum dots through virtual photon
exchange in a semiconductor microcavity is studied. The experimental conditions
for strong coupling and its manifestation in the spectra of emission are
analyzed.Comment: 2 pages, 1 figur
Incoherent Mollow triplet
A counterpart of the Mollow triplet (luminescence lineshape of a two-level
system under coherent excitation) is obtained for the case of incoherent
excitation in a cavity. Its analytical expression, in excellent agreement with
numerical results, pinpoints analogies and differences between the conventional
resonance fluorescence spectrum and its cavity QED analogue under incoherent
excitation.Comment: 4 pages, 3 figure
On Schr\"odinger's equation, 3-dimensional Bessel bridges, and passage time problems
In this work we relate the density of the first-passage time of a Wiener
process to a moving boundary with the three dimensional Bessel bridge process
and a solution of the heat equation with a moving boundary. We provide bounds
Open Heavy Flavor Production in p-p and Pb-Pb collisions as seen by ALICE at the LHC
Charm and beauty production are probed with the ALICE experiment at the LHC
by studying the single lepton transverse momentum distribution (electrons at
mid-rapidity, muons at large-rapidities) and D mesons reconstructed in their
hadronic decays. The differential production cross sections in proton proton
interactions show a good agreement with perturbative QCD calculations at both
sqrt(s) = 2.76 and 7 TeV. The measurements in lead lead reactions at
sqrt(s_{NN})= 2.76 TeV evidence a reduction (or suppression) of the production
rate at intermediate and high pt in the most central collisions with respect to
the rate in proton proton interactions.Comment: To appear in the Proceedings of the 19th Particles and Nuclei
International Conference, PANIC 201
Heavy-flavor suppression and azimuthal anisotropy in Pb-Pb collisions at sqrt(s_{NN}) = 2.76 TeV with the ALICE detector
Heavy-flavor hadron production studies in Pb-Pb collisions at sqrt(s_{NN}) =
2.76 TeV with the 2010 and 2011 data samples are presented. The measurements
are performed with the ALICE detector in various decay channels and in a wide
kinematic range. Heavy-flavor hadrons exhibit a suppression in the most central
Pb-Pb collisions that amounts to a factor 3-5 for pT ~ 8-10 GeV/c. The second
harmonic of the azimuthal distribution Fourier decomposition, v2, is non-zero
for non-central collisions at intermediate pT (~3 GeV/c).Comment: Quark Matter 2012 proceeding
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