13 citations · 24 across the 7 of their papers we have counts for
8 papers
Flexible rigidity: Compiling generic trusted-preparation protocols into sequential device-independent protocols
Amir Arqand, Srijita Kundu, Ernest Y. -Z. Tan
We give a generic compiler for turning a wide class of device-dependent protocols with trusted state preparation into sequential device-independent protocols. In order for our comp…
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…
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…
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 conditio…
Bounds on Petz-Rényi Divergences and their Applications for Device-Independent Cryptography
Thomas A. Hahn, Ernest Y. -Z. Tan, Peter Brown
Variational techniques have been recently developed to find tighter bounds on the von Neumann entropy in a completely device-independent (DI) setting. This, in turn, has led to sig…
Mutual information chain rules for security proofs robust against device imperfections
Amir Arqand, Tony Metger, Ernest Y. -Z. Tan
In this work we derive a number of chain rules for mutual information quantities, suitable for analyzing quantum cryptography with imperfect devices that leak additional informatio…
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,…
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…