3 papers
quant-ph2019
Semi-device-independent information processing with spatiotemporal degrees of freedom
Andrew J. P. Garner, Marius Krumm, Markus P. Mueller
Nonlocality, as demonstrated by the violation of Bell inequalities, enables device-independent cryptographic tasks that do not require users to trust their apparatus. In this artic…
quant-ph2018
Composition rules for quantum processes: a no-go theorem
Philippe Allard Guérin, Marius Krumm, Costantino Budroni +1
A quantum process encodes the causal structure that relates quantum operations performed in local laboratories. The process matrix formalism includes as special cases quantum mecha…
quant-ph2018
Quantum computation is the unique reversible circuit model for which bits are balls
Marius Krumm, Markus P. Mueller
The computational efficiency of quantum mechanics can be defined in terms of the qubit circuit model, which is characterized by a few simple properties: each computational gate is…