2 papers
quant-ph2023
Error Basis and Quantum Channel
B. V. Rajarama Bhat, Purbayan Chakraborty, Uwe Franz
The Weyl operators give a convenient basis of which is also orthonormal with respect to the Hilbert-Schmidt inner product. The properties of such a basis can be g…
math.FA2023
Schoenberg Correspondence for -(Super)Positive Maps on Matrix Algebras
B. V. Rajarama Bhat, Purbayan Chakraborty, Uwe Franz
We prove a Schoenberg-type correspondence for non-unital semigroups which generalizes an analogous result for unital semigroup proved by Michael Schürmann. It characterizes the gen…