Spin qubit dynamics

About

Our group investigates how to optimize the control of solid-state spin qubits, focusing on spin-carriers trapped by electrostatically defined quantum dots. Solid-state carriers, such as electrons and holes, are promising candidates for important applications in quantum technologies. Indeed they offer naturally-defined two-level systems, excellent positional control through electric potentials and direct interface with the semiconductor industry. In the past 20 to 30 years, the field has seen a continuous improvement, from switching to nuclear spin-free materials like Silicon and Germanium to faster single- and two-qubit operations. Recent results have brought the fidelity of these operations to the same level of other leading platform and the issue of scalability is being addressed by dense networks of qubit registers with integrated on-chip controls and long-range shuttling devices. In contrast, charge noise and disordered material properties still pose as significant obstacles to achieve fault-tolerant operations. Our task is to develop accurate differentiable models of these systems and, leveraging the most recent advancements in quantum optimal control, we are able to produce solutions that we can share with our experimental collaborators. We have recently demonstrated this for single-qubit operations and shuttling

Research Topics

Contact

Dr. Alessandro David

PGI-8

Building 04.16 / Room 3013

+49 2461/61-8828

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Selected publications

Last Modified: 16.12.2024