22–26 Nov 2021
AlbaNova Main Building
Europe/Stockholm timezone
Please note: ECTI 2021 will be held as a hybrid event.

Trapping electrons in a room-temperature quadrupole trap: towards an all-electronic microwave-enabled trapped electron qubit system for QIP

23 Nov 2021, 17:30
30m
Online via Zoom

Online via Zoom

invited talk online ECTI

Speaker

Hartmut Haeffner (UC Berkeley)

Description

We explore the feasibility of processing quantum information encoded in the spin of electrons trapped ion a Paul trap. The main idea is to replace the ions in a QCCD(quantum charge-coupled device) ion trap quantum computer with electrons. The combination of the low mass and simple internal structure should enable high-speed operation while allowing for high-fidelity operation. In particular, our simulation of common two-qubit error sources show that error rates of less than 1E-4 at clock speeds of 1 MHz for transport and quantum gates should be feasible.

Towards this goal, we trap single to few electrons in a millimeter-sized quadrupole Paul trap driven at 1.6 GHz in a room-temperature ultra-high vacuum setup. Electrons with sub-5 meV energies are introduced into the trap by near-resonant photoionisation of an atomic calcium beam and confined by microwave and static electric fields for several tens of milliseconds. A fraction of electrons remains trapped and shows no measurable loss for measurement times up to a second. Electronic excitation of the motion reveals secular frequencies from several tens to hundreds of MHz. Operating an electron Paul trap in a cryogenic environment may provide a platform for all-electric quantum computing with trapped electron spin
qubits.

Primary author

Hartmut Haeffner (UC Berkeley)

Presentation materials

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