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20 papers · 2 filters
Dynamics of a qubit coupled to a dissipative nonlinear quantum oscillator: an effective bath approach
Carmen Vierheilig, Dario Bercioux, Milena Grifoni
We consider a qubit coupled to a nonlinear quantum oscillator, the latter coupled to an Ohmic bath, and investigate the qubit dynamics. This composed system can be mapped onto that…
Initial correlations in open system's dynamics: The Jaynes-Cummings model
A. Smirne, H. -P. Breuer, J. Piilo +1
Employing the trace distance as a measure for the distinguishability of quantum states, we study the influence of initial correlations on the dynamics of open systems. We concentra…
Directed excitation transfer in vibrating chains by external fields
Oliver Muelken, Maximilian Bauer
We study the coherent dynamics of excitations on vibrating chains. By applying an external field and matching the field strength with the oscillation frequency of the chain it is p…
Dynamical enhancement of spatial entanglement in massive particles
Michael Lubasch, Florian Mintert, Sandro Wimberger
We discuss dynamical enhancement of entanglement in a driven Bose-Hubbard model and find an enhancement of two orders of magnitude which is robust against fluctuations in experimen…
Counting Statistics of Many-Particle Quantum Walks
Klaus Mayer, Malte C. Tichy, Florian Mintert +2
We study quantum walks of many non-interacting particles on a beam splitter array, as a paradigmatic testing ground for the competition of single- and many-particle interference in…
Four-Photon (In)Distinguishability Transition
Malte C. Tichy, Hyang-Tag Lim, Young-Sik Ra +3
We demonstrate the conspiration of many-particle interferences of different degree to determine the transmission of four photons of tunable indistinguishability through a four-port…