Coherent coupling of a trapped electron to a distant superconducting microwave cavity

Cridland Mathad, April, Lacy, John H, Pinder, Jonathan, Uribe, Alberto, Willetts, Ryan, Alvarez, Raquel and Verdú, José (2020) Coherent coupling of a trapped electron to a distant superconducting microwave cavity. Applied Physics Letters, 117 (15). a154001 1-6. ISSN 0003-6951

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We investigate theoretically the coupling of a single electron in a planar Penning trap with a remote superconducting microwave cavity. Coupling frequencies around Ω = 2π · 1 MHz can be reached with resonators with a loaded quality factor of Q = 10^5, allowing for the strong coupling regime. The electron and the cavity form a system of two coupled quantum harmonic oscillators. This is a hybrid and linear microwave quantum network. We show that the coherent interaction can be sustained over distances of a few mm up to several cm. Similar to classical linear MW circuits, the coherent quantum exchange of photons is ruled by the impedances of the electron and cavity. As one concrete application, we discuss the entanglement of the cyclotron motions of two electrons located in two separate traps.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 06 Oct 2020 07:25
Last Modified: 24 Feb 2022 13:27

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