3 papers
quant-ph2025
Proving security of BB84 under source correlations
Ashutosh Marwah, Frédéric Dupuis
Device imperfections and memory effects can result in undesired correlations among the states generated by a realistic quantum source. These correlations are called source correlat…
quant-ph2025
Security proof for parallel DIQKD
Ashutosh Marwah, Frédéric Dupuis
We present a parallel device independent quantum key distribution (DIQKD) protocol based on the CHSH game and prove its security. Using techniques developed for analysing the paral…
quant-ph2024
Universal chain rules from entropic triangle inequalities
Ashutosh Marwah, Frédéric Dupuis
The von Neumann entropy of an -partite system given a system can be written as the sum of the von Neumann entropies of the individual subsystems given $A_1^{k-…