Quantum simulations of dissipative dynamics: Time dependence instead of size

Benjamin Dive*, Florian Mintert, Daniel Burgarth

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

12 Dyfyniadau (Scopus)
180 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

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.

Iaith wreiddiolSaesneg
Rhif yr erthygl032111
Nifer y tudalennau7
CyfnodolynPhysical Review A
Cyfrol92
Rhif cyhoeddi3
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 09 Medi 2015

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