9 papers
Scalable Test of Genuine Multipartite Entanglement via Partially Randomized Measurements
Jan Wojcik, Pawel Chrabkowski, Wieslaw Laskowski
Certifying genuine multipartite entanglement in quantum systems can require a number of measurements that grows exponentially with the system size. Here we introduce a criterion ba…
Permutation asymmetry unlocks emergent advantage in randomized Bell tests
Wieslaw Laskowski, Tamas Vertesi, Jan Wojcik
All maximally entangled two-qubit states violate local realism with the same probability under uniformly random projective measurements, yet they need not behave identically in ran…
Unitary Realizations of Synchronizing Automata in Quantum Systems
Jȩdrzej Stempin, Jan Wójcik, Gabriela Banaszak +4
We introduce a quantum analogue of a classical synchronizing automaton. In classical case the state of a system evolves according to a set of rules forming an alphabet, and sequenc…
In defense of temporal Tsirelson bound
Antoni Wójcik, Jan Wójcik
In a recent paper, Chatterjee et al. [Phys. Rev. Lett 135, 220202 (2025)] analyze and experimentally implement a specific unitary evolution of a simple quantum system. The authors…
The Richness of Bell Nonlocality: Generalized Bell Polygamy and Hyper-Polygamy
Gerard Anglès Munné, Paweł Cieśliński, Jan Wójcik +1
Non-classical quantum correlations underpin both the foundations of quantum mechanics and modern quantum technologies. Among them, Bell nonlocality is a central example. For bipart…
Simple explanation of apparent Bell nonlocality of unentangled photons
Antoni Wójcik, Jan Wójcik
Wang et al. [Science Advances, 1 Aug 2025 Vol 11, Issue 31] recently reported an experiment that they interpret as demonstrating a violation of Bell's inequality using unentangled…
Rabi transport and the other finite-size effects in one-dimensional discrete-time topological quantum walk
Andrzej Grudka, Marcin Karczewski, Paweł Kurzyński +3
This paper investigates Rabi transport and finite-size effects in one-dimensional discrete-time topological quantum walks. We demonstrate the emergence of localized states at bound…
Sending absolutely maximally entangled states through noisy quantum channels
Maria Stawska, Jan Wójcik, Andrzej Grudka +1
Absolutely maximally entangled states are quantum states that exhibit maximal entanglement across any bipartition, making them valuable for applications. This study investigates th…
Quantum Resetting Protocols Based on Synchronizing Words
Jędrzej Stempin, Jan Wójcik, Andrzej Grudka +3
Resetting a system's state plays a fundamental role in physics, engineering, computer science, and many other fields. Here we focus on a method originally proposed in automata theo…