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Trapped Ion Quantum Computing

A quantum logic gate for free electrons

arXiv
Authors: Stefan Löffler, Thomas Schachinger, Peter Hartel, Peng-Han Lu, Rafal E. Dunin-Borkowski, Martin Obermair, Manuel Dries, Dagmar Gerthsen, Peter Schattschneider

Year

2022

Paper ID

59307

Status

Preprint

Abstract Read

~2 min

Abstract Words

107

Citations

N/A

Abstract

The topological charge m of vortex electrons spans an infinite-dimensional Hilbert space. Selecting a two-dimensional subspace spanned by m=pm 1, a beam electron in a transmission electron microscope (TEM) can be considered as a quantum bit (qubit) freely propagating in the column. A combination of electron optical quadrupole lenses can serve as a universal device to manipulate such qubits at the experimenter's discretion. We set up a TEM probe forming lens system as a quantum gate and demonstrate its action numerically and experimentally. High-end TEMs with aberration correctors are a promising platform for such experiments, opening the way to study quantum logic gates in the electron microscope.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2022 reference point for readers tracking recent quantum research.
  • The topological charge m of vortex electrons spans an infinite-dimensional Hilbert space.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2209.07123 [2] arXiv https://arxiv.org/abs/2209.07123 [3] Publisher https://arxiv.org/abs/2209.07123

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