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quant-ph2026

Beyond the Quantum Regression Theorem in Variational Polaron Master Equations: from Ohmic to Super-Ohmic Environments

Matias Bundgaard-Nielsen, Jake Iles-Smith

While the quantum regression theorem (QRT) is the standard tool for computing multi-time correlation functions in open quantum systems, it relies on system-bath separability and an…

quant-ph2025

Spectroscopy on a single nonlinear mode recognizes quantum states

Wouter Verstraelen, Stanisław Świerczewski, Andrzej Opala +7

Characterising optical quantum states is essential for the development of quantum technologies. While traditional approaches to perform full quantum state tomography are often expe…

quant-ph2025

Topological Quantum Compilation Using Mixed-Integer Programming

Pavel Rytir, Phillip C. Burke, Christos Aravanis +2

We introduce the Mixed-Integer Quadratically Constrained Quadratic Programming framework for the quantum compilation problem and apply it in the context of topological quantum comp…

quant-ph2025

Routing single photons with quantum emitters coupled to nanostructures

Mateusz Duda, Nicholas J. Martin, Eve O. Mills +2

Quantum emitters coupled to nanophotonic structures are an excellent platform for controllable single-photon scattering. The tunable light-matter interaction enables the constructi…

quant-ph2025★ 2 cited

A Markovian approach to -photon correlations beyond the quantum regression theorem

Mateusz Salamon, Oliver Dudgeon, Ahsan Nazir +1

Multi-photon correlations from quantum emitters coupled to vibrational environments lie beyond the reach of standard tools such as the quantum regression theorem (QRT). Here, we in…

quant-ph2025

Vortex Detection from Quantum Data

Chelsea A. Williams, Annie E. Paine, Antonio A. Gentile +2

Quantum solutions to differential equations represent quantum data -- states that contain relevant information about the system's behavior, yet are difficult to analyze. We propose…