Quantum information processing with trapped electrons

We explore electrons trapped in Paul traps as an attractive alternative to trapped ions to process quantum information. Quantum information can be encoded in the spin state of trapped electrons and their motional modes can be used as quantum bus to generate entanglement.

The combination of the extremely light mass and simple two-level spin structure of electrons enables high-speed operation while allowing for high-fidelity operation, and they can be manipulated with well-established microwave technology, removing some of the optical engineering challenges required to build a large-scale trapped-ion quantum computer. 

Operating an electron Paul trap in a cryogenic environment may provide a platform for all-electric quantum computing with trapped electron spin qubits. Here, we present our progress towards trapping and motional detection of trapped electrons in a cryogenic Paul trap.