Counting Individual Electrons on Liquid Helium

Abstract

We show that small numbers of electrons, including a single electron, can be held in a novel electrostatic trap above the surface of superfluid helium. A potential well is created using microfabricated electrodes in a 5 micron diameter pool of helium. Electrons are injected into the trap from an electron reservoir on a helium microchannel. They are individually detected using a superconducting single-electron transistor (SET) as an electrometer. A Coulomb staircase is observed as electrons leave the trap one-by-one until the trap is empty. A design for a scalable quantum information processor using arrays of electron traps is presented

15 pages, 5 figures

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Cited by in corpus (21)

• Proposal for manipulating and detecting spin and orbital states of trapped electrons on helium using cavity quantum electrodynamics
• Spectroscopy of Wigner molecules on superfluid helium using a superconducting resonator
• Wigner islands with electrons over helium
• Coupling an ensemble of electrons on superfluid helium to a superconducting circuit
• Blueprint for quantum computing using electrons on helium
• Signal and Charge Transfer Efficiency of Few Electrons Clocked on Microscopic Superfluid Helium Channels
• Piezoacoustics for precision control of electrons floating on helium
• Jaynes-Cummings Models with trapped electrons on liquid Helium
• Microwave Absorption of Surface-State Electrons on Liquid ${}^3$He
• Transport Measurements of Strongly-Correlated Electrons on Helium in a Classical Point-Contact Device
• Coulomb interaction-driven entanglement of electrons on helium
• Spin-orbit couplings between distant electrons trapped individually on liquid helium
• Jaynes-Cummings Models with trapped surface-state electrons in THz cavities
• Neutrons on a surface of liquid helium
• High-impedance resonators for strong coupling to an electron on helium
• A low power photoemission source for electrons on liquid helium
• Isolating electrons on superfluid helium
• Electron mobility on a surface of dielectric media: influence of surface level atoms
• Measurement of the Charge Transfer Efficiency of Electrons Clocked on Superfluid Helium
• Finite-temperature Wigner solid and other phases of ripplonic polarons on a helium film
• Controlling the transport of electrons on superfluid ${}^4$He in symmetric and asymmetric FET-like structures