SAMOP 2021 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 4: Quantum Thermodynamics and Open Quantum Systems
QI 4.4: Vortrag
Dienstag, 21. September 2021, 15:00–15:15, H3
Controlled Dephasing and Unequal Time Correlations in Rydberg Qubits — •Andre Salzinger1, Kevin Geier2, Titus Franz1, Sebastian Geier1, Robert Ott3, Annika Tebben1, Clement Hainaut1, Gerhard Zürn1, Martin Gärttner1, Philipp Hauke2, and Matthias Weidemüller1 — 1Physikalisches Institut Heidelberg — 2University of Trento — 3Institut für Theoretische Physik Heidelberg
Engineering open system dynamics relies on implementing restrictions on the degrees of freedom of a larger system. We present experimental results for simple Qubit rotations subjected to random phase walks, which are sampled from 1D Brownian motion. The observed ensemble and realization average follows a Lindblad description with a decay parameter given by the variance of sampled phase walks. We show how this technique can be used to extract unequal-time correlation functions in the driven two-level system by coupling to an ancilla level, and how this procedure can be extended to colored noise and larger spin systems.