Electrons Coherently Couple to Quantum Computer
A research team has proposed a setup that couples free electrons in an electron microscope to a trapped-ion quantum processor. The scheme is designed to detect electrons non-destructively and to accumulate information from multiple electrons in the qubit state. Their analysis indicates that even a single electron can create a resolvable excitation in the ion qubit.
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What this could mean
- 0–2 yearsPlausible
This proposal could lead to a working trapped-ion/free-electron interface within two years, giving electron microscopes a non-destructive single-electron detector.
The analysis already predicts resolvable qubit excitations from single electrons, and both trapped-ion processors and electron microscopes are established laboratory instruments. The main near-term hurdle is engineering the vacuum and field geometry to preserve coherence during the electron-qubit interaction.
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