Tootfinder

A Decoy-like Protocol for Quantum Key Distribution: Enhancing the Performance with Imperfect Single Photon Sources
Chanaprom Cholsuk, Furkan A\u{g}larc{\i}, Daniel K. L. Oi, Serkan Ate\c{s}, Tobias Vogl
https://arxiv.org/abs/2510.09454

A Decoy-like Protocol for Quantum Key Distribution: Enhancing the Performance with Imperfect Single Photon Sources
Quantum key distribution (QKD) relies on single photon sources (SPSs), e.g. from solid-state systems, as flying qubits, where security strongly requires sub-Poissonian photon statistics with low second-order correlation values (\$g^{(2)}(0)\$). However, achieving such low \$g^{(2)}(0)\$ remains experimentally challenging. We therefore propose a decoy-like QKD protocol that relaxes this constraint while maintaining security. This enables the use of many SPSs with \$g^{(2)}(0) > \$0.1, routinely …

Russian generals say all goals of the war will be achieved.
Russian economists say despite the pressure the economy will outlast Ukraine’s.
Even Russian fan-boy Donald Trump says that Russia is much stronger and Kyiv has no cards left to play in the war.

Hearing only reassurance,
it is little wonder that President Vladimir Putin sees no reason for real concessions on Ukraine.
From the vantage point of the Kremlin, the war is going according to plan.

With an army of yes-men, how Putin’s world turned into an echo chamber
The Russian president has little incentive to compromise in the ongoing peace talks because everyone around him keeps reassuring him that Russia is winning.

torchsom: The Reference PyTorch Library for Self-Organizing Maps
Louis Berthier, Ahmed Shokry, Maxime Moreaud, Guillaume Ramelet, Eric Moulines
https://arxiv.org/abs/2510.11147 …

torchsom: The Reference PyTorch Library for Self-Organizing Maps
This paper introduces torchsom, an open-source Python library that provides a reference implementation of the Self-Organizing Map (SOM) in PyTorch. This package offers three main features: (i) dimensionality reduction, (ii) clustering, and (iii) friendly data visualization. It relies on a PyTorch backend, enabling (i) fast and efficient training of SOMs through GPU acceleration, and (ii) easy and scalable integrations with PyTorch ecosystem. Moreover, torchsom follows the scikit-learn API for e…

HOPPET v2.0.0 release note
Alexander Karlberg, Paolo Nason, Gavin Salam, Giulia Zanderighi, Fr\'ed\'eric Dreyer
https://arxiv.org/abs/2510.09310 https://

HOPPET v2.0.0 release note
We document the three main new features in release 2.0.0 of the HOPPET parton distribution function evolution code, specifically support for N$^3$LO QCD evolution in the variable flavour number scheme, for the determination of hadronic structure functions for massless quarks up to N$^3$LO, and for QED evolution to an accuracy phenomenologically equivalent to NNLO QCD. Additionally we describe a new Python interface, CMake build option, functionality to save a hoppet table as an LHAPDF grid and …

Image of a quantum-corrected black hole without Cauchy horizons illuminated by a static thin accretion disk
Shilong Huang, Jiawei Chen, Jinsong Yang
https://arxiv.org/abs/2510.09956

Image of a quantum-corrected black hole without Cauchy horizons illuminated by a static thin accretion disk
Latest advances in effective quantum gravity propose a quantum-corrected black hole solution that avoids Cauchy horizons. In this paper, we study the image of the black hole and explore the influence of the quantum parameter $ζ$ on its image. First, we investigate the influence of $ζ$ on the event horizon, photon sphere, critical impact parameter, and innermost stable circular orbit associated with the black hole. We find that all these quantities exhibit an increase with increasing $ζ$. Mea…

A Multilingual Python Programming Language
Saad Ahmed Bazaz, Mirza Omer Beg
https://arxiv.org/abs/2510.09591 https://arxiv.org/pdf/2510.09591

A Multilingual Python Programming Language
All widely used and useful programming languages have a common problem. They restrict entry on the basis of knowledge of the English language. The lack of knowledge of English poses a major hurdle to many newcomers who do not have the resources, in terms of time and money, to learn the English language. Studies show that people learn better in their own language. Therefore, we propose a language transpiler built on top of the Python programming language, called UniversalPython, which allows one…

Towards polarization-enhanced PET: Study of random background in polarization-correlated Compton events
Ana Marija Ko\v{z}uljevi\'c, Tomislav Bokuli\'c, Darko Gro\v{s}ev, Siddharth Parashari, Luka Paveli\'c, Marinko Rade, Marijan \v{Z}uvi\'c, Mihael Makek
https://arxiv.org/abs/2510.11504

Towards polarization-enhanced PET: Study of random background in polarization-correlated Compton events
Positron Emission Tomography (PET) is a medical imaging modality that utilizes positron-emitting isotopes, such as Ga-68 and F-18, for many diagnostic purposes. The positron annihilates with an electron from the surrounding area, creating two photons of 511 keV energy and opposite momenta, entangled in their orthogonal polarizations. When each photon undergoes a Compton scattering process, the difference of their azimuthal scattering angles reflects the initial orthogonality of their polarizati…

Control of photoionization by resonant phase-locked pulse pairs
Edvin Olofsson, Evan Lovelle Fulton, Rezvan Tahouri, Mattias Bertolino, Jean Marcel Ngoko Djiokap, Jan Marcus Dahlstr\"om
https://arxiv.org/abs/2510.09441

Control of photoionization by resonant phase-locked pulse pairs
We study the nonlinear and resonant process of two-photon ionization of atoms (He and H) in a pump-probe scheme. The pump pulse prepares the quantum system in a superposition of the ground state and an excited bound state. By varying the phase difference between the pulses, we show how it is possible to coherently control the dressed-state population during the probe pulse. Our main result is that for certain laser parameters, the control over the dressed state population leads to strong contro…

Pamiętacie te stare czasy, kiedy największą żenadą było, jak ktoś odpalił laptopa w pociągu, a ten witał go melodyjką startu Windows?
A dziś mamy całe spektrum od żenady robienia zdjęć z dźwiękiem "migawki" czy przypadkowych reklam ryczących nagle na cały przedział, po wprost chamstwo grania na telefonie z załączonym dźwiękiem, oglądania pierdół czy słuchania muzyki bez słuchawek.
EDIT: no i jeszcze irytujące, głośne dzwonki i dźwięki powiadomień, powtarzane nazbyt częs…

Entangled Photon Pair Generator via Biexciton-Exciton Cascade in Semiconductor Quantum Dots and its Simulation
Simon Sekav\v{c}nik, Paul Kohl, Janis N\"otzel
https://arxiv.org/abs/2510.09262

Entangled Photon Pair Generator via Biexciton-Exciton Cascade in Semiconductor Quantum Dots and its Simulation
The generation of entangled photon pairs is highly useful for many types of quantum technologies. In this work an entangled photon pair generator that utilises the biexciton-exciton cascade in semiconductor quantum dots is described on a physical, mathematical, and software level. The system is implemented and simulated as a self-contained component in a framework for bigger quantum optical experiments. Thus, it is a description to further the holistic understanding of the system for interdisci…