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quant-ph2026★ 1 cited

Spectral signatures of nonstabilizerness and criticality in infinite matrix product states

Andrew Hallam, Ryan Smith, Zlatko Papić

While nonstabilizerness (''magic'') is a key resource for universal quantum computation, its behavior in many-body quantum systems, especially near criticality, remains poorly unde…

quant-ph2025

Photon emission without quantum jumps

Thomas Hartwell, Daniel Hodgson, Huda Alshemmari +2

When modelling photon emission, we often assume that the emitter experiences a random quantum jump. When a quantum jump occurs, the emitter transitions suddenly into a lower energy…

quant-ph2025★ 1 cited

Analytical bounds for decoy-state quantum key distribution with discrete phase randomization

Zhaohui Liu, Ahmed Lawey, Mohsen Razavi

We analyze the performance of quantum key distribution (QKD) protocols that rely on discrete phase randomization (DPR). For many QKD protocols that rely on weak coherent pulses (WC…

quant-ph2025

Probing metric fluctuations with the spin of a particle in a quantum simulation

Jiannis K. Pachos, Patricio Salgado-Rebolledo, Martine Schut

Exploring potential empirical manifestations of quantum gravity is a challenging pursuit. In this study, we utilise a lattice representation of a (2+1)D massive gravity toy model i…

quant-ph2025★ 20 cited

Quantum Mpemba effect without global symmetries

Tanmay Bhore, Lei Su, Ivar Martin +2

The Mpemba effect, where a system initially farther from equilibrium relaxes faster than one closer to equilibrium, has been extensively studied in classical systems and recently e…

quant-ph2025★ 1 cited

ScarFinder: a detector of optimal scar trajectories in quantum many-body dynamics

Jie Ren, Andrew Hallam, Lei Ying +1

Mechanisms that give rise to coherent quantum dynamics, such as quantum many-body scars, have recently attracted much interest as a way of controlling quantum chaos. However, ident…