64 citations · 425 across the 25 of their papers we have counts for
24 papers · 1 filter
Incompatibility of quantum instruments
Leevi Leppäjärvi, Michal Sedlák
Quantum instruments describe outcome probability as well as state change induced by measurement of a quantum system. Incompatibility of two instruments, i. e. the impossibility to…
Classical Communications with Indefinite Causal Order for completely depolarizing channels
Sk Sazim, Michal Sedlak, Kratveer Singh +1
If two identical copies of a completely depolarizing channel are put into a superposition of their possible causal orders, they can transmit non-zero classical information. Here, w…
Optimal probabilistic storage and retrieval of unitary channels
Michal Sedlák, Alessandro Bisio, Mário Ziman
We address the question of a quantum memory storage of quantum dynamics. In particular, we design an optimal protocol for probabilistic storage-and-retrieval of unitary ch…
Experimental replication of single-qubit quantum phase gates
M. Mičuda, R. Stárek, I. Straka +4
We experimentally demonstrate the underlying physical mechanism of the recently proposed protocol for superreplication of quantum phase gates [W. Dür, P. Sekatski, and M. Skotiniot…
Incompatible measurements on quantum causal networks
Michal Sedlak, Daniel Reitzner, Giulio Chiribella +1
The existence of incompatible measurements, epitomized by Heisenberg's uncertainty principle, is one of the distinctive features of quantum theory. So far, quantum incompatibility…
Generalized Hofmann quantum process fidelity bounds for quantum filters
Michal Sedlak, Jaromír Fiurášek
We propose and investigate bounds on quantum process fidelity of quantum filters, i.e. probabilistic quantum operations represented by a single Kraus operator K. These bounds gener…