Quantum simulations of dissipative dynamics: Time dependence instead of size

Benjamin Dive*, Florian Mintert, Daniel Burgarth

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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The simulation of quantum systems has been a key aim of quantum technologies for decades, and generalization to open systems is necessary to include physically realistic systems. We introduce an approach for quantum simulations of open system dynamics in terms of an environment of minimal size and a time-dependent Hamiltonian. This enables the implementation of a continuous-time simulation with a finite environment, whereas state-of-the-art methods require an infinite environment or only match the simulation at discrete times. We find the necessary and sufficient conditions for this Hamiltonian to be well behaved, and when these are not met, we show that there exists an approximate Hamiltonian that is well behaved and look into its applications.

Original languageEnglish
Article number032111
Number of pages7
JournalPhysical Review A
Issue number3
Publication statusPublished - 09 Sept 2015




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