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- Centre National de la Recherche ScientifiqueFR493 papers
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22 papers · 2 filters
Non-Markovianity over ensemble averages in quantum complex networks
Johannes Nokkala, Sabrina Maniscalco, Jyrki Piilo
We consider bosonic quantum complex networks as structured finite environments for a quantum harmonic oscillator and investigate the interplay between the network structure and its…
Experimental implementation of fully controlled dephasing dynamics and synthetic spectral densities
Zhao-Di Liu, Henri Lyyra, Yong-Nan Sun +5
Engineering, controlling, and simulating quantum dynamics is a strenuous task. However, these techniques are crucial to develop quantum technologies, preserve quantum properties, a…
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…
Local probe for connectivity and coupling strength in quantum complex networks
Johannes Nokkala, Sabrina Maniscalco, Jyrki Piilo
We develop a local probe to estimate the connectivity of complex quantum networks. Our results show how global properties of different classes of complex networks can be estimated…
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…