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quant-ph2015★ 204 cited
Variational Matrix Product Operators for the Steady State of Dissipative Quantum Systems
Jian Cui, J. Ignacio Cirac, Mari Carmen Bañuls
We present a new variational method, based on the matrix product operator (MPO) ansatz, for finding the steady state of dissipative quantum chains governed by master equations of t…
quant-ph2014★ 27 cited
Completely positive approximate solutions of driven open quantum systems
Farhang Haddadfarshi, Jian cui, Florian Mintert
We define a perturbative approximation for the solution of Lindblad master equations with time-dependent generators that satisfies the fundamental property of complete positivity,…