44 citations · 97 across the 4 of their papers we have counts for
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TNQMetro: Tensor-network based package for efficient quantum metrology computations
Krzysztof Chabuda, Rafal Demkowicz-Dobrzanski
TNQMetro is a numerical package written in Python for calculations of fundamental quantum bounds on measurement precision. Thanks to the usage of the tensor-network formalism it ca…
Tensor-Network Approach for Quantum Metrology in Many-Body Quantum Systems
Krzysztof Chabuda, Jacek Dziarmaga, Tobias J. Osborne +1
Identification of the optimal quantum metrological protocols in realistic many particle quantum models is in general a challenge that cannot be efficiently addressed by the state-o…
The quantum Allan variance
Krzysztof Chabuda, Ian Leroux, Rafal Demkowicz-Dobrzanski
The instability of an atomic clock is characterized by the Allan variance, a measure widely used to describe the noise of frequency standards. We provide an explicit method to find…
Certainty relations, mutual entanglement and non-displacable manifolds
Zbigniew Puchała, Łukasz Rudnicki, Krzysztof Chabuda +2
We derive explicit bounds for the average entropy characterizing measurements of a pure quantum state of size in orthogonal bases. Lower bounds lead to novel entropic uncer…