3 papers
quant-ph2025
Classical bounds on two-outcome bipartite Bell expressions and linear prepare-and-measure witnesses: Efficient computation in parallel environments such as graphics processing units
István Márton, Erika Bene, Péter Diviánszky +1
The presented program aims at speeding up the brute force computation of the so-called norm of a matrix using graphics processing units (GPUs). Alternatives for CPUs have…
quant-ph2025
Bound entanglement-assisted prepare-and-measure scenarios based on four-dimensional quantum messages
István Márton, Erika Bene, Tamás Vértesi
We present a class of linear correlation witnesses that detects bound entanglement within a three-party prepare-and-measure scenario with four-dimensional quantum messages. We rela…
quant-ph2023
Beating one bit of communication with and without quantum pseudo-telepathy
István Márton, Erika Bene, Péter Diviánszky +1
According to Bell's theorem, certain entangled states cannot be simulated classically using local hidden variables (LHV). But if can we augment LHV by classical communication, how…