5 papers
Device-independent quantum key distribution over 100 km with single atoms
Bo-Wei Lu, Chao-Wei Yang, Run-Qi Wang +15
Device-independent quantum key distribution (DI-QKD) is a key application of the quantum internet. We report the realization of DI-QKD between two single-atom nodes linked by 100-k…
Generalized Rényi entropy accumulation theorem and generalized quantum probability estimation
Amir Arqand, Thomas A. Hahn, Ernest Y. -Z. Tan
The entropy accumulation theorem, and its subsequent generalized version, is a powerful tool in the security analysis of many device-dependent and device-independent cryptography p…
Finite-size analysis of prepare-and-measure and decoy-state QKD via entropy accumulation
Lars Kamin, Amir Arqand, Ian George +2
An important goal in quantum key distribution (QKD) is the task of providing a finite-size security proof without the assumption of collective attacks. For prepare-and-measure QKD,…
Marginal-constrained entropy accumulation theorem
Amir Arqand, Ernest Y. -Z. Tan
We derive a novel chain rule for a family of channel conditional entropies, covering von Neumann and sandwiched Rényi entropies. In the process, we show that these channel conditi…
Analytic Rényi Entropy Bounds for Device-Independent Cryptography
Thomas A. Hahn, Aby Philip, Ernest Y. -Z. Tan +1
Device-independent (DI) cryptography represents the highest level of security, enabling cryptographic primitives to be executed safely on uncharacterized devices. Moreover, with su…