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6 papers · 2 filters
Influence of Complex Exciton-Phonon Coupling on Optical Absorption and Energy Transfer of Quantum Aggregates
Jan Roden, Alexander Eisfeld, Wolfgang Wolff +1
We present a theory that efficiently describes the quantum dynamics of an electronic excitation that is coupled to a continuous, highly structured phonon environment. Based on a st…
On product, generic and random generic quantum satisfiability
C. R. Laumann, A. M. Läuchli, R. Moessner +2
We report a cluster of results on k-QSAT, the problem of quantum satisfiability for k-qubit projectors which generalizes classical satisfiability with k-bit clauses to the quantum…
Decoherence in a dynamical quantum phase transition
Sarah Mostame, Gernot Schaller, Ralf Schützhold
Motivated by the similarity between adiabatic quantum algorithms and quantum phase transitions, we study the impact of decoherence on the sweep through a second-order quantum phase…
Pointer basis induced by collisional decoherence
Marc Busse, Klaus Hornberger
We study the emergence and dynamics of pointer states in the motion of a quantum test particle affected by collisional decoherence. These environmentally distinguished states are s…
Comment on "Quantum linear Boltzmann equation with finite intercollision time"
Klaus Hornberger, Bassano Vacchini
Inconsistencies are pointed out in a recent proposal [L. Diosi, Phys. Rev. A 80, 064104 (2009); arXiv:0905.3908v1] for a quantum version of the classical linear Boltzmann equation.
Phase transitions and random quantum satisfiability
C. R. Laumann, R. Moessner, A. Scardicchio +1
Alongside the effort underway to build quantum computers, it is important to better understand which classes of problems they will find easy and which others even they will find in…