9 papers
Perfect Games in Dimension-Bounded Communication
E. Zambrini Cruzeiro, Emmanuel Zambrini Cruzeiro
Perfect prepare-and-measure games exhibit an all-or-nothing quantum advantage: a quantum system of dimension satisfies every prescribed winning constraint, whereas a classical…
Daylight quantum keyless private communication for free-space links
Pedro Neto Mendes, Preeti Yadav, Lourenço Sumares +3
Quantum key distribution (QKD) is the most established approach in quantum communication. However, long-distance free-space implementations, particularly satellite links, remain ch…
Bell Inequalities for Smells
Ricardo Faleiro, Flavien Hirsch, Emmanuel Zambrini Cruzeiro +1
In this work, we study a particular class of Bell inequalities involving only direct equality-comparisons of outcomes. This arises naturally when outcomes are difficult to characte…
Quantum Keyless Private Communication under intense background noise
Pedro Neto Mendes, Davide Rusca, Hugo Zbinden +1
Quantum key distribution relies on quantum mechanics to securely distribute cryptographic keys, offering security but necessitating complex infrastructure and significant resources…
Exploring Bell Nonlocality with Extremal Non-Signaling Boxes
Emmanuel Zambrini Cruzeiro, Junior R. Gonzales-Ureta, Raman Choudhary +3
Extremal non-signaling (ENS) boxes are correlations that correspond to vertices of the non-signaling polytope of a Bell scenario. Neither quantum theory nor any theory for ideal me…
Non-Interactive Oblivious Transfer and One-Time Programs from Noisy Quantum Storage
Ricardo Faleiro, Manuel Goulão, Leonardo Novo +1
Few primitives are as intertwined with the foundations of cryptography as Oblivious Transfer (OT). Not surprisingly, with the advent of quantum information processing, a major rese…