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Journal of Low Temperature Physics

An Artificial Bosonic-Bath Quantum Simulator Based on Electrons on Liquid Helium Coupled to Passive LC Arrays

Kiiamov Airat Gazinurovich, Tayurskii Dmitrii Albertovich

Published Oct 26, 2026• 0 citations
Publisher
DOI
10.1007/s10909-026-03479-4

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An electron floating on liquid helium is proposed to be trapped (by a microelectrode set below the liquid helium) in a high-finesse terahertz (THz) cavity. The two lowest levels of the vertical motion of the electron act as a two-level "atom," which could resonantly interact with the THz cavity, and thus the famous Jaynes-Cummings model (JCM) and driven JCM could be implemented. The numerical results show that, for the typical parameters of the cavity and electrons on the surface of liquid helium, strong coupling between the artificial atom and the THz cavity could be obtained.
Surface‐state electrons on liquid helium, have been proposed as condensed matter qubits. We have demonstrated that small numbers of electrons, including a single isolated electron, can be held in an electrostatic trap above the surface of superfluid helium and individually detected using a superconducting single‐electron transistor (SET). A new design for a quantum information processor, using an array of electron traps on liquid helium, has been fabricated on a Si wafer using a superconducting A1 SET.