Concept

Coherent state

Related publications (207)

Second harmonic nanoparticles in imaging applications

Demetri Psaltis, Ioannis Papadopoulos, Ye Pu, Rachel Grange, Chia-Lung Hsieh, Jae-Woo Choi, Xin Yang

Nanocrystals with second harmonic response is a new class of nonlinear optical nanoprobes with dramatically different properties from fluorescent agents. Compared with two-photon fluorescence, second harmonic generation is an ultrafast, lossless, and coher ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Observation of Coherent Beam-Beam effects in the LHC

Xavier Buffat, Tatiana Pieloni, Werner Friedrich Herr

Early collisions in the LHC with a very limited num- ber of bunches with high intensities indicated the presence of coherent beam-beam driven oscillations. Here we dis- cuss the experimental results and compare with the expec- tations. ...

2011

Trajectory-based solution of the nonadiabatic quantum dynamics equations: an on-the-fly approach for molecular dynamics simulations

Ursula Röthlisberger, Ivano Tavernelli, Basile Curchod

The non-relativistic quantum dynamics of nuclei and electrons is solved within the framework of quantum hydrodynamics using the adiabatic representation of the electronic states. An on-the-fly trajectory-based nonadiabatic molecular dynamics algorithm is d ...

Royal Society of Chemistry2011

Nonuniform and coherent motion of superconducting vortices in the picometer-per-second regime

Helmuth Berger, Hui Wang

We investigated vortex dynamics in a single-crystal sample of type-II superconductor NbSe2 using scanning tunneling microscopy at 4.2 K. The decay of the magnetic field at a few nT/s in our superconducting magnet induced the corresponding motion of vortice ...

2011

Dual Channel Optimization of Tracking Schemes for E1 CBOC Signal

Pierre-André Farine, Cyril Botteron, Aleksandar Jovanovic, Youssef Tawk

New generation of satellite navigation signals, such as AltBOC (Alternative Binary Offset Keying), CBOC (Composite Binary Offset Keying) and TMBOC (Time Multiplex Binary Offset Keying) bring enhancements in the tracking process, such as more signal power, ...

IEEE2011

Polariton Condensation in a One-Dimensional Disordered Potential

Benoît Marie Joseph Deveaud, Vincenzo Savona, Konstantinos Lagoudakis, Barbara Pietka, Francesco Manni, Luca Fontanesi

We study the coherence and density modulation of a nonequilibrium exciton-polariton condensate in a one-dimensional valley with disorder. By means of interferometric measurements we evidence a modulation of the ﬁrst-order coherence function and we relate i ...

American Physical Society2011

Insect Vision: A Few Tricks to Regulate Flight Altitude

Dario Floreano, Jean-Christophe Zufferey

A recent study sheds new light on the visual cues used by Drosophila to regulate flight altitude. The striking similarity with previously identified steering mechanisms provides a coherent basis for novel models of vision-based flight control in insects an ...

Elsevier2010

Coherent Oscillations in an Exciton-Polariton Josephson Junction

Benoît Marie Joseph Deveaud, Konstantinos Lagoudakis, Barbara Pietka

We report on the observation of spontaneous coherent oscillations in a microcavity polariton bosonic Josephson junction. Condensation of exciton polaritons here takes place under incoherent excitation in a double potential well naturally formed in the diso ...

American Physical Society2010

Higher order coherence of exciton-polariton condensates

Paolo Schwendimann, Antonio Quattropani

The second- and third-order coherence functions g((n))(0) (n= 2 and 3) of an exciton-polariton condensate are measured and compared to the theory. Contrary to an ideal photon laser, deviation from unity in the second- and third-order coherence functions is ...

2010

THE VISNET II DVC CODEC: ARCHITECTURE, TOOLS AND PERFORMANCE

Touradj Ebrahimi, Frédéric Dufaux

This paper introduces the VISNET II DVC codec. This co-dec achieves very high RD performance thanks to the efficient combination of many state-of-the-art coding tools into a fully practical video codec. Experimental results show that the proposed DVC codec ...

2010

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