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Q: Fachverband Quantenoptik und Photonik
Q 15: Atom and Ion Qubits (joint session QI/Q)
Q 15.3: Vortrag
Montag, 10. März 2025, 17:45–18:00, HS II
Implementation of Quantum Token Protocol with Trapped Ions — •Manika Bhardwaj1, Jan Thieme1, Bernd Bauerhenne1, Moritz Göb1, Bo Deng1,2, and Kilian Singer1 — 1Experimental Physics I, Institute of Physics, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel — 2Institute of Applied Physics, University of Bonn, Wegelerstraße 8, 53115 Bonn
We present a novel quantum token protocol [1] with trapped ions. This quantum token protocol is based on ensembles exploiting the quantum projection noise. Trapped ions are suitable for implementing a robust quantum token protocol due to their long coherence times and single-shot readout. Specifically, we aim to utilise the 42S1/2−32D5/2 transition of 40Ca+ ions for this purpose. The protocol requires preparing the ions in a superposition state, where uniform state preparation across the ensemble is critical for obtaining protocol fidelity. To address potential variations in state preparation due to inhomogeneous control parameters, we will employ tailored composite pulses [2].
[1] K. Singer, C. Popov, and B. Naydenov, Verfahren zum Erstellen eines Quanten-Datentokens (DE 10 2022 107 528 A1) DE-Patent (2023).
[2] G. T. Genov, M. Hain, N. V. Vitanov, and T. Halfmann, PRA 101, 013827 (2020).
Keywords: Trapped Ions; Quantum Token; Composite Pulses; Tapered Paul Trap; Quantum Control