Single electrons in a dual-plane printed-circuit-board Penning trap

A. AL-Rjoub, J. Verdú

Ching‐Hua Tseng

Zirui Fang, Benedict A. D. Sukra, Xing Fan

We demonstrate single-electron trapping and detection in a two-dimensionally scalable dual-plane printed-circuit-board Penning trap. We characterize deterministic electron loading, axial damping, axial temperature, and collision-induced magnetron-radius growth at low magnetic fields. These results establish a practical platform for planar Penning traps and identify key next steps toward applications in quantum information science.

Zijue Luo, Jae Eu, Tianyi Wang +1 more

Qubits encoded in the spin of trapped electrons have been proposed as a promising novel platform for quantum information processing. While trapping of electrons has been largely carried out in Penning traps for precision measurement purposes, it is desirable to use linear Paul traps instead, leaning on the successes of trapped ion quantum processors. Here we present a Paul trap for electrons made of a single printed circuit board. Our approach requires no assembly and the rigid design minimizes manufacturing intolerances. We characterize the trap performance and observe trapped electron lifetimes of 2.13 ms and secular frequencies of up to 90 MHz.

K T Satyajith, Sharath Ananthamurthy

Fernando Galve, P. Fernández, Guenter Werth