9 papers
Coherent Control of Channel Dilations Activate Temporal Bell Nonclassicality
H S Karthik, Akshata Shenoy H, A R Usha Devi +1
The temporal Clauser-Horne-Shimony-Holt (CHSH) inequality witnesses the nonclassicality of temporal correlations, but its violation is generally degraded by environmental noise. He…
Neural Information Causality: A Random-Access Capacity Law for Representation Learning
Jeongho Bang, Marcin Pawłowski
How can a learned representation remain useful when the question it must answer is chosen only after encoding? Preserving information is essential, but does not by itself ensure ac…
Communication-constrained nonlocal correlations
Lucas Pollyceno, Denis Freudenheim, José Nogueira +3
Identifying the physical grounds distinguishing quantum theory from broader probabilistic frameworks remains an open challenge. Communication-based proposals -- most notably the pr…
High-dimensional detection-loophole-free measurement-device-independent quantum random number generator
Joakim Argillander, Daniel Spegel-Lexne, Martin Clason +4
Certifying random number generators is challenging, especially in security-critical fields like cryptography. Here, we demonstrate a measurement-device-independent quantum random n…
Certifying semi-device-independent security via wave-particle duality experiments
Chithra Raj, Tushita Prasad, Anubhav Chaturvedi +8
Wave-particle duality is known to be equivalent to an entropic uncertainty relation based on the min- and max-entropies, which have a clear operational meaning in quantum cryptogra…
Extending quantum correlations to arbitrary distances via parallel repetition of routed Bell tests
Anubhav Chaturvedi, Marcin Pawłowski, Máté Farkas
Applications such as Device-Independent Quantum Key Distribution (DIQKD) require loophole-free certification of long-distance quantum correlations. However, these distances remain…
Hacking quantum computers with row hammer attack
Fernando Almaguer-Angeles, Pedro R. Dieguez, Akshata Shenoy H. +1
We demonstrate a hardware vulnerability in quantum computing systems by exploiting cross-talk effects on an available commercial quantum computer (IBM). Specifically, based on the…
Experimental demonstration of the equivalence of entropic uncertainty with wave-particle duality
Daniel Spegel-Lexne, Santiago Gómez, Joakim Argillander +4
Wave-particle duality is one of the most striking and counter-intuitive features of quantum mechanics, illustrating that two incompatible observables cannot be measured simultaneou…
Security of device-independent quantum key distribution via monogamy relations from multipartite information causality
Lucas Pollyceno, Anubhav Chaturvedi, Chithra Raj +2
Beyond the foundational significance, the problem of bounding nonlocal correlations by reasonable physical principles has meaningful practical consequences, particularly for device…