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QI: Fachverband Quanteninformation

QI 6: Poster I (joint session QI/Q)

QI 6.30: Poster

Montag, 6. März 2023, 16:30–19:00, Empore Lichthof

Quantum Simulations: Endeavours with trapped ions in a 2D array and a Linear Paul trap — •Apurba Das, Deviprasath Palani, Florian Hasse, Maharshi Pran Bora, Lucas Eisenhart, Tobias Spanke, Ulrich Warring, and Tobias Schaetz — Physikalisches Institut, Freiburg, Deutschland

Individual ions, trapped in a customised trap architecture offer one of the most promising platforms for quantum simulations[1]. In our lab, applying suitable local and global control fields on the trapped ions, we set up and tune increasingly complex quantum systems with a high level of control in a 2D array on a Surface electrode radio frequency trap and in a linear Paul trap. In our 2D array, we realize the Floquet-engineered coupling of adjacent sites through local manipulation of trapping potentials[2] and tuning of the system in real-time and interference of coherent states over large amplitudes[3]. Here, we also demonstrate the relocation of ions in a deterministic manner. In the Linear Paul Trap, we show the preparation of two ions in a squeezed state of motion featuring entanglement of the ions' motional degrees. This leads to the realization of an experimental analogue of the particle pair creation during cosmic inflation in the early universe[4]. In addition, we move towards the transfer of entanglement of motional degrees of freedom to internal degree of freedom.

[1] T. Schaetz et al., New J. Phs. 15, 085009 (2013)

[2] P. Kiefer et al., PRL 123, 213605 (2019)

[3] F. Hakelberg et al., PRL 123, 100504 (2019)

[4] M. Wittemer et al., PRL 123, 180502 (2019)