523 citations · 1.5k across the 16 of their papers we have counts for
3 papers · 1 filter
Short-time vs. long-time dynamics of entanglement in quantum lattice models
R. G. Unanyan, D. Muth, M. Fleischhauer
We study the short-time evolution of the bipartite entanglement in quantum lattice systems with local interactions in terms of the purity of the reduced density matrix. A lower bou…
Commuting Heisenberg operators as the quantum response problem: Time-normal averages in the truncated Wigner representation
B. Berg, L. I. Plimak, A. Polkovnikov +3
The applicability of the so-called truncated Wigner approximation (-W) is extended to multitime averages of Heisenberg field operators. This task splits naturally in two. Firstly,…
Qubit protection in nuclear-spin quantum dot memories
Z. Kurucz, M. W. Sørensen, J. M. Taylor +2
We present a mechanism to protect quantum information stored in an ensemble of nuclear spins in a semiconductor quantum dot. When the dot is charged the nuclei interact with the sp…