4 papers · 1 filter
Convexity of a certain operator trace functional
Eric Evert, Scott McCullough, Tea Štrekelj +1
In this article the operator trace function is introduced and its convexity and concavity properties are investigated.…
Closest separable state when measured by a quasi-relative entropy
Anna Vershynina
It is well known that for pure states the relative entropy of entanglement is equal to the reduced entropy, and the closest separable state is explicitly known as well. The same ho…
Quantum coherence, discord and correlation measures based on Tsallis relative entropy
Anna Vershynina
Several ways have been proposed in the literature to define a coherence measure based on Tsallis relative entropy. One of them is defined as a distance between a state and a set of…
Upper continuity bound on the quantum quasi-relative entropy
Anna Vershynina
We provide an upper bound on the quasi-relative entropy in terms of the trace distance. The bound is derived for two cases: 1) any operator monotone decreasing function and full ra…