9 citations · 15 across the 8 of their papers we have counts for
8 papers
The statistical disturbance bound of quantum measurements
Ties-A. Ohst, Sebastian Schlösser, Roope Uola
Quantifying the disturbance caused by a quantum measurement typically requires detailed knowledge of the underlying measurement channel. In this work, we introduce a statistical di…
The most discriminable quantum states in the multicopy regime
Maria Kvashchuk, Polina Chernyshova, Lucas E. A. Porto +3
This work investigates which sets of quantum states give rise to the highest achievable success probability in minimum-error state discrimination if multiple copies of the unknown…
Structure of quantum measurements implementable with one round of classical communication
Arthur C. R. Dutra, Ties-A. Ohst, Hai-Chau Nguyen +1
Measurements that can be implemented via local operations and classical communication (LOCC) constitute a class of operations that is available in future quantum networks in which…
Quantum memory in spontaneous emission processes
Mei Yu, Ties-A. Ohst, Hai-Chau Nguyen +1
Quantum memory effects are essential in understanding and controlling open quantum systems, yet distinguishing them from classical memory remains challenging. We introduce a convex…
Characterising memory in quantum channel discrimination via constrained separability problems
Ties-A. Ohst, Shijun Zhang, Hai Chau Nguyen +2
Quantum memories are a crucial precondition in many protocols for processing quantum information. A fundamental problem that illustrates this statement is given by the task of chan…
Revealing hidden physical nonclassicality with nonnegative polynomials
Ties-A. Ohst, Benjamin Yadin, Birte Ostermann +3
Understanding quantum phenomena which go beyond classical concepts is a focus of modern quantum physics. Here, we show how the theory of nonnegative polynomials emerging around Hil…
Symmetries and Wigner representations of operational theories
Ties-A. Ohst, Martin Plávala
We develop the theory of Wigner representations for general probabilistic theories (GPTs), a large class of operational theories that include both classical and quantum theory. The…
Certifying Quantum Separability with Adaptive Polytopes
Ties-A. Ohst, Xiao-Dong Yu, Otfried Gühne +1
The concept of entanglement and separability of quantum states is relevant for several fields in physics. Still, there is a lack of effective operational methods to characterise th…