Speaker
Description
In recent years, trapped ions have emerged as a prime candidate for the establishment of noisy intermediate-scale quantum (NISQ) computers. We utilize 171Yb+ ions interacting via MAGIC (MAgnetic Gradient Induced Coupling), where 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 focused on scaling up our ion trap platform. To this end, we are developing a control system partially housed within ultra-high vacuum and cryogenic conditions, which enables low-noise DC control for multi-zone shuttling. To meet the technical demands of such a system, we draw on the emerging field of cryo-electronics to develop the necessary hardware. Here, we present a summary of the technical building blocks of such devices and a future path to scalability for digital quantum computing with trapped ions in the NISQ era.
[1] F. Mintert and C. Wunderlich, Ion-trap quantum logic using long-wavelength radiation, Phys. Rev. Lett. 87, 257904 (2001)
| Academic level | PhD student |
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