Quantum 2025 – scientific programme

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THU: Thursday Contributed Sessions

THU 13: Poster Session: Applications

THU 13.7: Poster

Thursday, September 11, 2025, 16:30–18:30, ZHG Foyer 1. OG

Building trapped-ion quantum processors using MAGIC technology — •Mathew Chan — eleQtron GmbH

In recent years, trapped ions have emerged as a prime candidate for the establishment of noisy intermediate-scale quantum (NISQ) computers. eleQtron is a quantum startup which was established as a spin-off from the group of Prof. Christof Wunderlich, where quantum computing with trapped 171Yb+ ions interacting via MAGIC (MAgnetic Gradient Induced Coupling) has been pioneered. MAGIC[1] refers to the deployment of a static magnetic field gradient along the ion chain. This gradient results in a differentiation between the qubit transition energy at each ion position, facilitating the use of microwave frequencies to achieve coherent control of individual ions whilst minimizing undesirable crosstalk. This also induces a coupling between ions which can be exploited for the implementation of multi-qubit gates. Additionally, mature microwave technology in the commercial space is leveraged to overcome the scalability challenge. For the next generation of MAGIC-based quantum computers, we are now focused on scaling up our ion trap platform. To this end, we first need to miniaturize the trap into a modular planar design, which is then housed within an ultra-high vacuum and cryogenic conditions, which serve to reduce the ion motional heating rates. Here, we present a summary of the technical building blocks of our platform and a future path to scalability for digital quantum computing with trapped ions in the NISQ era.
[1] F. Mintert & C. Wunderlich, Phys. Rev. Lett. 87, 257904 (2001)

Keywords: Trapped ions; Quantum computing; Microwave addressing; Ytterbium