How coherence measurements of a qubit steer its quantum environment

CD Qiu, YD **, JX Zhang, GQ Liu, WL Ma - Physical Review B, 2024 - APS
A qubit suffers decoherence when coupled to a classical or quantum environment, and
characterizing the qubit decoherence process is vital in quantum technologies. Repetitive …

Stability and decoherence analysis of the silicon vacancy in

T Fazio, I Deretzis, G Fisicaro, E Paladino, A La Magna - Physical Review A, 2024 - APS
The silicon vacancy (V Si) in 3 C-SiC is studied as a center of interest in the field of quantum
technologies, modeled as an electron spin (behaving as a two-state qubit in appropriate …

Generalized cluster correlation expansion theory for stimulated Raman adiabatic passage processes in the presence of a spin bath

T Fazio, A Napoli, B Militello - Physical Review B, 2024 - APS
The stimulated Raman adiabatic passage (STIRAP) is applied to a system coupled to a bath
made of fully interacting two-level systems whose dynamics is studied by exploiting the …

Measurement of backaction from electron spins in a gate-defined GaAs double quantum dot coupled to a mesoscopic nuclear spin bath

P Bethke, RPG McNeil, J Ritzmann, T Botzem… - Physical Review Letters, 2020 - APS
Decoherence of a quantum system arising from its interaction with an environment is a key
concept for understanding the transition between the quantum and classical world as well as …

Relationship between subjecting the qubit to dynamical decoupling and to a sequence of projective measurements

F Sakuldee, Ł Cywiński - Physical Review A, 2020 - APS
We consider a qubit coupled to another system (its environment) and discuss the
relationship between the effects of subjecting the qubit to either a dynamical decoupling …

[HTML][HTML] Dephasing dynamics of a central spin interacting with a classical Ising spin bath

F Shayegani, KA Samani, M Abdi, MW AlMasri - Physics Letters A, 2024 - Elsevier
We study the effect of interaction between bath spins on central spin dynamics. For this end,
we consider various types of interactions among the bath fluctuators. We give an analytical …

A Simple Scheme for Preparation of the Approximate Gottesman-Kitaev-Preskill States with Random Walk Mechanism

F Sakuldee - arxiv preprint arxiv:2409.08556, 2024 - arxiv.org
The Gottesman-Kitaev-Preskill (GKP) coding is proven to be a good candidate for encoding
a qubit on continuous variables (CV) since it is robust under random-shift disturbance. Its …

Statistics of projective measurement on a quantum probe as a witness of noncommutativity of algebra of a probed system

F Sakuldee, Ł Cywiński - Quantum Information Processing, 2022 - Springer
We consider a quantum probe P undergoing pure dephasing due to its interaction with a
quantum system S. The dynamics of P is then described by a well-defined sub-algebra of …

Generalized Cluster Correlation Expansion theory for STIRAP processes in the presence of a spin bath

T Fazio, A Napoli, B Militello - arxiv preprint arxiv:2405.20235, 2024 - arxiv.org
The Stimulated Raman Adiabatic Passage (STIRAP) is applied to a system coupled to a
bath made of fully-interacting two-level systems, whose dynamics is studied exploiting the …

Decoherence analysis of silicon vacancies in 3C-SiC

T Fazio, G Fisicaro, I Deretzis, E Paladino… - arxiv preprint arxiv …, 2022 - arxiv.org
We study the silicon vacancy in 3C SiC as a color center of interest in the field of Quantum
Technologies, focusing on its magnetic interaction with the SiC nuclear spin bath containing …