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448 papers · 1 filter
Expansion of time-convolutionless non-Markovian quantum master equations: A case study using the Fano-Anderson model
Tim Alhäuser, Heinz-Peter Breuer
We explore the performance of the time-convolutionless (TCL) projection operator technique using the Fano-Anderson model as a test case. Comparing the exact TCL master equation wit…
Position-Resolved Resonance Quantization for Lossy Cavities
Lucas Weitzel, Andreas Buchleitner, Dominik Lentrodt
Modern experiments in resonators are moving to ever more extreme quantum regimes, posing major challenges to established theoretical approaches, such as so-called few-mode models.…
Control of memory effects in a spin-boson system by periodic driving
Pietro Follia, Bassano Vacchini, Heinz-Peter Breuer
We study the emergence of quantum memory effects in a spin-boson system at finite temperature driven by an external time-periodic force. Quantifying memory effects by the trace-dis…
Quantum feature-map learning with reduced resource overhead
Jonas Jäger, Philipp Elsässer, Elham Torabian
Current quantum computers require algorithms that use limited resources economically. In quantum machine learning, success hinges on quantum feature-maps, which embed classical dat…
Atomic diffraction by patterned holes in hexagonal boron nitride: a comparison between semi-classical and quantum computational models
Eivind Kristen Osestad, Ekaterina Zossimova, Michael Walter +1
The diffraction of atoms and molecules through tiny, sub-nanometre holes in atomically thin membranes is a promising approach for advancing atom interferometry sensing and atomic h…
Local and global approaches to the thermodynamics of pure decoherence processes in open quantum systems
Irene Ada Picatoste, Alessandra Colla, Heinz-Peter Breuer
We study the nonequilibrium thermodynamics of pure decoherence processes in open quantum systems coupled to a thermal reservoir. We review various definitions of central quantities…