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|Title: ||Some implications of superconducting quantum interference to the application of master equations in engineering quantum technologies|
|Authors: ||Duffus, Stephen N.A.|
Bjergstrom, Keiran N.
Dwyer, Vincent M.
Zagoskin, Alexandre M.
Everitt, Mark J.
|Issue Date: ||2016|
|Publisher: ||© American Physical Society|
|Citation: ||DUFFUS, S. ...et al., 2016. Some implications of superconducting quantum interference to the application of master equations in engineering quantum technologies. Physical Review B - Condensed Matter and Materials Physics, 94, 064518.|
|Abstract: ||In this paper we consider the modeling and simulation of open quantum systems from a device engineering perspective. We derive master equations at different levels of approximation for a superconducting quantum interference device (SQUID) ring coupled to an ohmic bath. We demonstrate that the master equations we consider produce decoherences that are qualitatively and quantitatively dependent on both the level of approximation and the ring's external flux bias. We discuss the issues raised when seeking to obtain Lindbladian dissipation and show, in this case, that the external flux (which may be considered to be a control variable in some applications) is not confined to the Hamiltonian, as often assumed in quantum control, but also appears in the Lindblad terms.|
|Description: ||This paper was accepted for publication in the journal Physical Review B - Condensed Matter and Materials Physics and the definitive published version is also available at http://dx.doi.org/10.1103/PhysRevB.94.064518|
|Publisher Link: ||http://dx.doi.org/10.1103/PhysRevB.94.064518|
|Appears in Collections:||Published Articles (Physics)|
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