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14 papers · 1 filter
Long-time relaxation of a finite spin bath linearly coupled to a qubit
Jukka P. Pekola, Bayan Karimi, Marco Cattaneo +1
We discuss the long-time relaxation of a qubit linearly coupled to a finite bath of spins (two-level systems, TLSs), with the interaction Hamiltonian in rotating wave approxima…
Self-consistent quantum measurement tomography based on semidefinite programming
Marco Cattaneo, Matteo A. C. Rossi, Keijo Korhonen +4
We propose an estimation method for quantum measurement tomography (QMT) based on semidefinite programming (SDP), and discuss how it may be employed to detect experimental imperfec…
A brief journey through collision models for multipartite open quantum dynamics
Marco Cattaneo, Gian Luca Giorgi, Roberta Zambrini +1
The quantum collision models are a useful method to describe the dynamics of an open quantum system by means of repeated interactions between the system and some particles of the e…
Dynamics of a dispersively coupled transmon qubit in the presence of a noise source embedded in the control line
Antti Vaaranta, Marco Cattaneo, Russell E. Lake
We describe transmon qubit dynamics in the presence of noise introduced by an impedance-matched resistor () that is embedded in the qubit control line. To obtain the…
Quantum simulation of dissipative collective effects on noisy quantum computers
Marco Cattaneo, Matteo A. C. Rossi, Guillermo García-Pérez +2
Dissipative collective effects are ubiquitous in quantum physics, and their relevance ranges from the study of entanglement in biological systems to noise mitigation in quantum com…
Comment on "Steady-State Coherences by Composite System-Bath Interactions"
Marco Cattaneo, Gonzalo Manzano
In a recent Letter, Guarnieri et al. [1] reported on the possibility of generating steady-state coherence (SSC) in the energy basis of a two-level system by the sole action of a si…