779 citations · 6.1k across the 108 of their papers we have counts for
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Stochastic feedback control of quantum transport to realize a dynamical ensemble of two nonorthogonal pure states
Shakib Daryanoosh, Howard M. Wiseman, Tobias Brandes
A Markovian open quantum system which relaxes to a unique steady state of finite rank can be decomposed into a finite physically realizable ensemble (PRE) of pure states.…
Semiclassical excited-state signatures of quantum phase transitions in spin chains with variable-range interactions
Manuel Gessner, Victor Manuel Bastidas, Tobias Brandes +1
We study the excitation spectrum of a family of transverse-field spin chain models with variable interaction range and arbitrary spin , which in the case of interpolates…
Controlling the stability of steady states in continuous variable quantum systems
Philipp Strasberg, Gernot Schaller, Tobias Brandes
For the paradigmatic case of the damped quantum harmonic oscillator we present two measurement-based feedback schemes to control the stability of its fixed point. The first scheme…
Dissipative Two-Mode Tavis-Cummings Model with Time-Delayed Feedback Control
Wassilij Kopylov, Milan Radonjić, Tobias Brandes +2
We investigate the dynamics of a two-mode laser system by extending the two-mode Tavis-Cummings model with dissipative channels and incoherent pumping and by applying the mean-fiel…
Thermodynamics of stochastic Turing machines
Philipp Strasberg, Javier Cerrillo, Gernot Schaller +1
In analogy to Brownian computers we explicitly show how to construct stochastic models, which mimic the behaviour of a general purpose computer (a Turing machine). Our models are d…
Time delayed control of excited state quantum phase transitions in the Lipkin-Meshkov-Glick model
Wassilij Kopylov, Tobias Brandes
We investigate the role of dissipation in excited state quantum phase transitions (ESQPT) within the Lipkin-Meshkov-Glick model. Signatures of the ESQPT are directly visible in the…