2 papers
quant-ph2024
A Sufficient Criterion for Divisibility of Quantum Channels
Frederik vom Ende
We present a simple, dimension-independent criterion which guarantees that some quantum channel is divisible, i.e. that there exists a non-trivial factorization . The…
quant-ph2020
Strict Positivity and -Majorization
Frederik vom Ende
Motivated by quantum thermodynamics we first investigate the notion of strict positivity, that is, linear maps which map positive definite states to something positive definite aga…