4 papers
Robustness of spin state superpositions for noisy quantum metrology
Trinidad B. Lantaño, Gabriela Wójtowicz, Susana F. Huelga +1
Quantum metrology faces major challenges in noisy environments, where decoherence rapidly degrades useful quantum resources. We investigate the dynamics of the precision limits giv…
Approaching the scaling limit of transport through lattices with dephasing
Subhajit Sarkar, Gabriela Wójtowicz, BartÅomiej Gardas +2
We examine the stationary--state equations for lattices with generalized Markovian dephasing and relaxation. When the Hamiltonian is quadratic, the single--particle correlation mat…
Quantum Fisher information from tensor network integration of Lyapunov equation
Gabriela Wójtowicz, Susana F. Huelga, Marek M. Rams +1
The Quantum Fisher Information (QFI) is a geometric measure of state deformation calculated along the trajectory parameterizing an ensemble of quantum states. It serves as a key co…
YASTN: Yet another symmetric tensor networks; A Python library for abelian symmetric tensor network calculations
Marek M. Rams, Gabriela Wójtowicz, Aritra Sinha +1
We present an open-source tensor network Python library for quantum many-body simulations. At its core is an abelian-symmetric tensor, implemented as a sparse block structure manag…