High-impedance resonators for strong coupling to an electron on helium
arXiv:2410.19592 · doi:10.1103/PhysRevApplied.23.024001
Abstract
The in-plane motion of an electron on helium can couple to superconducting microwave resonators via electrical dipole coupling, offering a robust and rapid readout scheme. In previous efforts, microwave resonator designs for electrons on helium have lacked the coupling strength to reach the strong coupling regime, where coherent quantum effects outlast both electron and resonator decoherence rates. High-impedance superconducting microwave resonators offer a path to strong coupling, but integrating such resonators with electrons on helium remains an outstanding challenge. Here, we introduce a high-impedance resonator design compatible with strong coupling to electrons on helium. We fabricate and measure titanium nitride resonators with median internal quality factors of and average impedance of 2.5 k, promising a seven-fold increase in coupling strength compared with standard 50 resonators. Additionally, we develop a simplified resonator model from the capacitance matrix and sheet inductance that accurately predicts the mode frequencies, significantly simplifying the design process of future resonators for investigating quantum effects with electrons on helium.
15 pages, 7 figures, 2 tables
References in corpus (41)
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Circuit Quantum Electrodynamics
- Controlling the spontaneous emission of a superconducting transmon qubit
- Planar Superconducting Resonators with Internal Quality Factors above One Million
- Strong spin-photon coupling in silicon
- Introduction to Quantum Electromagnetic Circuits
- High Kinetic Inductance Superconducting Nanowire Resonators for Circuit QED in a Magnetic Field
- Improved superconducting qubit coherence using titanium nitride
- Implementation of low-loss superinductances for quantum circuits
- Strong Coupling Cavity QED with Gate-Defined Double Quantum Dots Enabled by a High Impedance Resonator
- Quasiparticle dynamics in granular aluminum close to the superconductor to insulator transition
- Low Loss Superconducting Titanium Nitride Coplanar Waveguide Resonators
- Circuit Quantum Electrodynamics of Granular Aluminum Resonators
- Fabrication and Characterization of Aluminum Airbridges for Superconducting Microwave Circuits
- High Kinetic Inductance NbN Nanowire Superinductors
- Qubits with electrons on liquid helium
- Proposal for manipulating and detecting spin and orbital states of trapped electrons on helium using cavity quantum electrodynamics
- Nanowire Superinductance Fluxonium Qubit
- Moving beyond the transmon: Noise-protected superconducting quantum circuits
- Electron Spin Resonance at the Level of 10000 Spins Using Low Impedance Superconducting Resonators
- Strong coupling between a photon and a hole spin in silicon
- Atomic layer deposition of titanium nitride for quantum circuits
- Spectroscopy of Wigner molecules on superfluid helium using a superconducting resonator
- Single electrons on solid neon as a solid-state qubit platform
- Counting Individual Electrons on Liquid Helium
- Extremely efficient clocked electron transfer on superfluid helium
- Coupling an ensemble of electrons on superfluid helium to a superconducting circuit
- Magnetic field resilient high kinetic inductance superconducting niobium nitride coplanar waveguide resonators
- Low-impedance superconducting microwave resonators for strong coupling to small magnetic mode volumes
- Millimeter-Wave Four-Wave Mixing via Kinetic Inductance for Quantum Devices
- Superconductor-insulator transition in nanowires and nanowire arrays
- Image-charge detection of the Rydberg states of surface electrons on liquid helium
- Granular Aluminum Meandered Superinductors for Quantum Circuits
- High-kinetic inductance NbN films for high-quality compact superconducting resonators
- On-chip microwave filters for high-impedance resonators with gate-defined quantum dots
- Blueprint for quantum computing using electrons on helium
- Superconducting TiN Films Sputtered over a Large Range of Substrate DC Bias
- Coulomb interaction-driven entanglement of electrons on helium
- Developing high-impedance superconducting resonators and on-chip filters for semiconductor quantum dot circuit quantum electrodynamics
- Compact inductor-capacitor resonators at sub-gigahertz frequencies
- From weak to strong-coupling superconductivity tuned by substrate in TiN films