222 citations · 2.2k across the 95 of their papers we have counts for
3 papers · 1 filter
The unavoidable information flow to environment in quantum measurements
Erkka Haapasalo, Teiko Heinosaari, Takayuki Miyadera
One of the basic lessons of quantum theory is that one cannot obtain information on an unknown quantum state without disturbing it. Hence, by performing a certain measurement, we l…
Incompatibility of unbiased qubit observables and Pauli channels
T. Heinosaari, D. Reitzner, T. Rybár +1
A quantum observable and a channel are considered compatible if they form parts of the same measurement device, otherwise they are incompatible. Constrains on compatibility between…
Determining quantum coherence with minimal resources
Claudio Carmeli, Teiko Heinosaari, Sabrina Maniscalco +2
We characterize minimal measurement setups for validating the quantum coherence of an unknown quantum state. We show that for a -level system, the optimal strategy consists of m…