883 citations · 3.9k across the 25 of their papers we have counts for
6 papers · 2 filters
Counterexamples to additivity of minimum output p-Renyi entropy for p close to 0
Toby Cubitt, Aram W. Harrow, Debbie Leung +2
Complementing recent progress on the additivity conjecture of quantum information theory, showing that the minimum output p-Renyi entropies of channels are not generally additive f…
Higher entropic uncertainty relations for anti-commuting observables
Stephanie Wehner, Andreas Winter
Uncertainty relations lie at the very core of quantum mechanics, and form the cornerstone of essentially all quantum cryptographic applications. In particular, they play an importa…
The maximum output p-norm of quantum channels is not multiplicative for any p>2
Andreas Winter
We prove the claim made in the title by showing that approximately randomising maps of large dimension are counterexamples to the multiplicativity conjecture.
Entanglement and separability of quantum harmonic oscillator systems at finite temperature
Janet Anders, Andreas Winter
In the present paper we study the entanglement properties of thermal (a.k.a. Gibbs) states of quantum harmonic oscillator systems as functions of the Hamiltonian and the temperatur…
Quantum Correlation Without Classical Correlations
Dagomir Kaszlikowski, Aditi Sen De, Ujjwal Sen +2
We show that genuine multiparty quantum correlations can exist on its own, without a supporting background of genuine multiparty classical correlations, even in macroscopic systems…
Quantum coding theorem from privacy and distinguishability
Michal Horodecki, Seth Lloyd, Andreas Winter
We prove direct quantum coding theorem for random quantum codes. The problem is separated into two parts: proof of distinguishability of codewords by receiver, and that of indistin…