3 papers
quant-ph2020
Infinite-Dimensional Programmable Quantum Processors
Martina Gschwendtner, Andreas Winter
A universal programmable quantum processor uses program quantum states to apply an arbitrary quantum channel to an input state. We generalize the concept of a finite-dimensional pr…
quant-ph2020
Programmability of covariant quantum channels
Martina Gschwendtner, Andreas Bluhm, Andreas Winter
A programmable quantum processor uses the states of a program register to specify one element of a set of quantum channels which is applied to an input register. It is well-known t…
quant-ph2019
Quantum Error-Detection at Low Energies
Martina Gschwendtner, Robert Koenig, Burak Şahinoğlu +1
Motivated by the close relationship between quantum error-correction, topological order, the holographic AdS/CFT duality, and tensor networks, we initiate the study of approximate…