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quant-ph2021★ 5 cited
Quantum memory at an eigenstate phase transition in a weakly chaotic model
M. R. Lambert, Shan-Wen Tsai, Shane P. Kelly
We study a fully connected quantum spin model resonantly coupled to a small environment of non-interacting spins, and investigate how initial state properties are remembered at lon…
cond-mat.stat-mech2021★ 17 cited
Zeno crossovers in the entanglement speed of spin chains with noisy impurities
Abhijit P. Chaudhari, Shane P. Kelly, Riccardo J. Valencia-Tortora +1
We use a noisy signal with finite correlation time to drive a spin (dissipative impurity) in the quantum XY spin chain and calculate the dynamics of entanglement entropy of a bipar…