DecEntQueSt

Decoherence-Enhanced Effects in Open Quantum Systems.

We investigate when environmental interactions become a resource for measurement, readout, and autonomous entanglement.

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MSCA Cofund · Physics for Future · FZU

Project Scope

Research focus

Open quantum systems where decoherence is engineered as a constructive resource.

Methodology

Generalized quantum master equation (QGME).
Non-equilibrium Green’s function (NEGF).
Phase space formulation of quantum optics.
Exact numerical simulations.

Outcomes

Limits of decoherence-enhanced quantum measurements.
Assessing the feasibility of steady-state entanglement.

Research Themes

We consider setups where decoherence helps

Each setup explores a different way in which environmental interactions enhance performance rather than destroy coherence.

DEQUM

Decoherence-Enhanced Quantum Measurements built around singlet-triplet readout.
We design QPC noise signatures to separate triplet leakage from measurement backaction and quantify the useful decoherence window.
This project builds on and extends the research in:
- S. D. Barrett and T. M. Stace, Phys. Rev. B 73, 075324 (2006).
- Ł. Marcinowski, K. Roszak, P. Machnikowski, and M. Krzyżosiak, Phys. Rev. B 88, 125303 (2013).

ABEE

We verify the (im)possibility of Autonomous Bath-Engineered Entanglement using uncorrelated photonic baths as a resource.
Setup focus: autonomous entanglement (photonic baths generating steady-state correlations without feedback).
Inspired by:
- Bradley Longstaff, Michael G. Jabbour, and Jonatan Bohr Brask, Phys. Rev. A 108, 032209 (2023).

Tutorials Notes

ABEE two-mode ellipse GUI

A GUI for steady-state covariances of two coupled light modes with NEGF diagnostics.

Physics Games

The Science Fair game wheel, with Physicists 2048 selected and the other activities arranged around it.

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Science Fair Physics Games

Build atoms, explore light and spectra, and meet the scientists who changed physics. Choose a quick challenge from the wheel and discover the science by playing.