IQIM Postdoctoral and Graduate Student Seminar

Abstract: Trapped ions are among the most promising paths to realizing quantum computers, having exhibited the highest fidelity gates and long coherence times. Scaling up will require the adoption of new technologies, and can be facilitated by new approaches. In this talk I will introduce a new concept for scaling trapped-ion quantum computers based on microfabricated Penning traps, introducing flexible 2-dimensional ion transport while removing the need for high-voltage radio-frequency fields and thus improving compatibility with standardized chip fabrication [1,2]. We have used this to perform sensing of both static and oscillating magnetic and electric fields near the chip surface, and more recently demonstrated multi-qubit gates and control of multi-dimensional arrays of ions. I will also outline how the use of integrated optics can be used to facilitate scaling [3,4]

 [1] S. Jain et al. PRX Physical Review X 10, 031027 (2021)

 [2] S. Jain et al. Nature 627, 8004, pp. 510-514 (2024)

 [3] K. Mehta et al. Nature 586, 533-537 (2018) 

 [4] C. Mordini et al. Physical Review X. 15, 011040 (2025)

Lunch will be provided following the talk, on the Bridge lawn.