SKM 2021 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 3: Poster Sesssion I: Quantum Chaos and Many-Body Quantum Dynamics
DY 3.2: Poster
Dienstag, 28. September 2021, 17:30–19:30, P
Dynamics of NV centers interacting with background spins — •Lukas Voss and Jürgen Stockburger — Institute for Complex Quantum Systems, Ulm University
The nitrogen vacancy (NV) center in diamond is considered to be one of the most promising physical systems for application in emerging quantum technologies such as quantum sensing and quantum computing [1]. The corresponding protocols are highly sensitive to the interactions of NV centers with either 13C background spins or other NV centers.
The number of spins typically involved is too large for direct methods of propagation (curse of dimensionality). As a remedy, we modify a stochastic jump method for coherent quantum dynamics introduced by Breuer [2], which greatly reduces the dimension of the state space of the propagation (sum vs. product spaces).
We demonstrate this technique for an NV center and several nuclear background spins and find attractive performance characteristics. Further investigations are aimed at clustering a large number of background spins. Treating intra-cluster interactions by unitary propagation while applying the jump approach to inter-cluster interactions will further improve simulation performance.
[1] MW Doherty et al., Physics Reports 528, 1 (2013)
[2] H-P Breuer Physical Review A 69, 122 (2004)