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19952026
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quant-ph2026

Non-Markovian exceptional points in waveguide quantum electrodynamics

Stefano Longhi

Spontaneous emission of a quantum emitter, such as an excited atom, is a fundamental process in quantum electrodynamics (QED), typically associated with exponential decay to the gr…

quant-ph2026

Quantum key distribution over a metropolitan network using an integrated photonics based prototype

Maria Ana Pereira, Giulio Gualandi, Rebecka Sax +5

An industrial-scale adoption of Quantum Key Distribution (QKD) requires the development of practical, stable, resilient and cost-effective hardware that can be manufactured at larg…

quant-ph2026★ 4 cited

Quantum Pontus-Mpemba Effect Enabled by the Liouvillian Skin Effect

Stefano Longhi

We unveil a quantum Pontus-Mpemba effect enabled by the Liouvillian skin effect in a dissipative tight-binding chain with asymmetric incoherent hopping and coherent boundary coupli…

quant-ph2026★ 1 cited

Exact dynamics and bound states of a cavity coupled to a two-dimensional reservoir

Heng-Na Xiong, Da-Wei Ye, Yang Yang +4

We demonstrate a robust scheme for quantum information storage based on bound states in a two-dimensional coupled-cavity array. When a target cavity is tuned to resonance with the…

quant-ph2025★ 1 cited

Magnetic Control of the Non-Hermitian Skin Effect in Two-Dimensional Lattices

Stefano Longhi

The non-Hermitian skin effect (NHSE) -- the anomalous boundary accumulation of an extensive number of bulk modes -- has emerged as a hallmark of non-Hermitian physics, with broad i…

quant-ph2025

On entropy production of repeated quantum measurements III. Quantum detailed balance

Tristan Benoist, Noé Cuneo, Vojkan Jakšić +1

In light of the dynamical-systems approach to entropy production in repeated quantum measurements, proposed and illustrated in Commun. Math. Phys. 357, 77-123 (2018) [arXiv:1607.00…