Speaker
Description
Our group develops scalable ion-trap quantum computers based on the Charge-Coupled Quantum Device (QCCD) architecture. To realize elementary quantum gate operations on the trapped-ion qubits, we employ the microwave near-field approach [1] which uses microwave conductors embedded in the trap structure and the resulting amplitude gradients of the microwave magnetic field. This poster reports on results from a room-temperature surface-electrode ion trap apparatus, which we employ to develop new gate schemes and qubit control techniques. The setup employs $^9\text{Be}^+$ ions in a surface-electrode ion trap. We have recently demonstrated a universal computation register based on amplitude-modulated two-qubit microwave gates and micromotion-sideband single-ion addressing [2]. We report on important experimental upgrades to this setup, including a new control system and an individual-ion real-time capable readout, which significantly enhances our gate analysis capability, as well as novel multi-qubit gate schemes. This work has been supported by the QVLS-Q1 project, the BMFTR ATIQ project and the EU Millenion-SGA1 project.
[1] C. Ospelkaus et al., Nature 476 7359 (2011)
[2] N. Pulido-Mateo et al.,Phys. Rev. Research 6, 2 (2024)
| Academic level | PhD student |
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