Publication
On-the-Fly ab initio Semiclassical Evaluation of Electronic Coherences in Polyatomic Molecules Reveals a Simple Mechanism of Decoherence
Publications associées (32)
On the Efficiency of Semiclassical and Classical Approximations of Quantum Fidelity in Many-Dimensional Systems
This thesis is focused on classical and semiclassical approximations of a specific quantum time correlation function, the “quantum fidelity.” Namely, we rigorously study the efficiency of a continuous class of algorithms for the evaluation of its classical ...
EPFL2012Quantum-coherent coupling of a mechanical oscillator to an optical cavity mode
Tobias Kippenberg, Albert Schliesser, Stefan Alexander Weis
Optical laser fields have been widely used to achieve quantum control over the motional and internal degrees of freedom of atoms and ions(1,2), molecules and atomic gases. A route to controlling the quantum states of macroscopic mechanical oscillators in a ...
2012PT-Symmetric Periodic Optical Potentials
In quantum theory, any Hamiltonian describing a physical system is mathematically represented by a self-adjoint linear operator to ensure the reality of the associated observables. In an attempt to extend quantum mechanics into the complex domain, it was r ...
Springer US2011One-loop adjoint masses for non-supersymmetric intersecting branes
We consider breaking of supersymmetry in intersecting D-brane configurations by slight deviation of the angles from their supersymmetric values. We compute the masses generated by radiative corrections for the ad joint scalars on the brane world-volumes. I ...
2011Nuclear quantum effects in ab initio dynamics: Theory and experiments for lithium imide
Michele Ceriotti, Giacomo Francesco Leonardo Miceli, Michele Parrinello
Owing to their small mass, hydrogen atoms exhibit strong quantum behavior even at room temperature. Including these effects in first-principles calculations is challenging because of the huge computational effort required by conventional techniques. Here w ...
2010Signatures of unstable semiclassical trajectories in tunneling
It was found recently that processes of multidimensional tunneling are generally described at high energies by unstable semiclassical trajectories. We study two observational signatures related to the instability of trajectories. First, we find an addition ...
2009Dynamics-controlled truncation scheme for quantum optics and nonlinear dynamics in semiconductor microcavities
We present a systematic theory of Coulomb-induced correlation effects in the nonlinear optical processes within the strong-coupling regime. In this paper, we shall set a dynamics controlled truncation scheme microscopic treatment of nonlinear parametric pr ...
2008Dephasing representation: Employing the shadowing theorem to calculate quantum correlation functions
Due to the Heisenberg uncertainty principle, various classical systems differing only on the scale smaller than Planck's cell correspond to the same quantum system. We use this fact to find a unique semiclassical representation without the Van Vleck determ ...
2004Quantum-Well Excitons In Semiconductor Microcavities - Unified Treatment Of Weak And Strong-Coupling Regimes
Vincenzo Savona, Paolo Schwendimann
The system of one or several quantum wells embedded in a planar semiconductor Fabry-Perot microcavity with distributed Bragg reflectors is studied in the framework of both a semiclassical and a full quantum theory. The results obtained with the two treatme ...
1995Classical and quantum mechanics of a chaotic hamiltonian system
We examine the correspondence between a quantum system and its classical analogue. We consider the wedge billiard which shows a wide variety of behaviors ranging from integrable to strongly chaotic. Angle-action coordinates are provided for the flow and fo ...
EPFL1995