112 citations · 658 across the 17 of their papers we have counts for
5 papers · 1 filter
Spontaneous emission in a silicon charge qubit
Khoi T. Nguyen, N. Tobias Jacobson, Michael P. Lilly +6
The interaction between a qubit and its environment provides a channel for energy relaxation which has an energy-dependent timescale governed by the specific coupling mechanism. We…
Unitary equilibration after a quantum quench of a thermal state
N. Tobias Jacobson, Lorenzo Campos Venuti, Paolo Zanardi
In this work we investigate the equilibration dynamics after a sudden Hamiltonian quench of a quantum spin system initially prepared in a thermal state. To characterize the equilib…
Exact infinite-time statistics of the Loschmidt echo for a quantum quench
Lorenzo Campos Venuti, N. Tobias Jacobson, Siddhartha Santra +1
The equilibration dynamics of a closed quantum system is encoded in the long-time distribution function of generic observables. In this paper we consider the Loschmidt echo general…
The transition to chaos of coupled oscillators: An operator fidelity susceptibility study
N. Tobias Jacobson, Paolo Giorda, Paolo Zanardi
The operator fidelity is a measure of the information-theoretic distinguishability between perturbed and unperturbed evolutions. The response of this measure to the perturbation ma…
Fidelity approach to the disordered quantum XY model
Silvano Garnerone, N. Tobias Jacobson, Stephan Haas +1
We study the random XY spin chain in a transverse field by analyzing the susceptibility of the ground state fidelity, numerically evaluated through a standard mapping of the model…