Electron Spin Resonance at the Level of 10000 Spins Using Low Impedance Superconducting Resonators

Abstract

We report on electron spin resonance (ESR) measurements of phosphorus donors localized in a 200 square micron area below the inductive wire of a lumped element superconducting resonator. By combining quantum limited parametric amplification with a low impedance microwave resonator design we are able to detect around 20000 spins with a signal-to-noise ratio (SNR) of 1 in a single shot. The 150 Hz coupling strength between the resonator field and individual spins is significantly larger than the 1 - 10 Hz coupling rates obtained with typical coplanar waveguide resonator designs. Due to the larger coupling rate, we find that spin relaxation is dominated by radiative decay into the resonator and dependent upon the spin-resonator detuning, as predicted by Purcell.

References in corpus (13)

• Single-shot read-out of an individual electron spin in a quantum dot
• Circuit cavity electromechanics in the strong coupling regime
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
• Observation of quantum jumps in a superconducting artificial atom
• Anisotropic rare-earth spin ensemble strongly coupled to a superconducting resonator
• Quantum limited amplification and entanglement in coupled nonlinear resonators
• Initialization by measurement of a two-qubit superconducting circuit
• Protecting a Spin Ensemble against Decoherence in the Strong-Coupling Regime of Cavity QED
• Schemes for the observation of photon correlation functions in circuit QED with linear detectors
• Characterizing Quantum Microwave Radiation and its Entanglement with Superconducting Qubits using Linear Detectors
• Observation of Entanglement Between Itinerant Microwave Photons and a Superconducting Qubit
• Fast, low-power manipulation of spin ensembles in superconducting microresonators

Cited by in corpus (29)

• Hybrid quantum systems based on magnonics
• Input-output theory for spin-photon coupling in Si double quantum dots
• Single electron-spin-resonance detection by microwave photon counting
• Inductive-detection electron-spin resonance spectroscopy with $65$spins$/\sqrt{\text{Hz}}$ sensitivity
• A perspective on scaling up quantum computation with molecular spins
• Tunable magnon-magnon coupling in synthetic antiferromagnets
• Enhanced molecular spin-photon coupling at superconducting nanoconstrictions
• Ultra-strong photon-to-magnon coupling in multilayered heterostructures involving superconducting coherence via ferromagnetic layers
• A near-ideal degenerate parametric amplifier
• Storing quantum information in spins and high-sensitivity ESR
• Proposal for detection of a single electron spin in a microwave resonator
• Low-impedance superconducting microwave resonators for strong coupling to small magnetic mode volumes
• Probing spin dynamics of ultra-thin van der Waals magnets via photon-magnon coupling
• Roadmap on Nanoscale Magnetic Resonance Imaging
• Three-Wave Mixing Quantum-Limited Kinetic Inductance Parametric Amplifier operating at 6 Tesla and near 1 Kelvin
• Dynamically enhancing qubit-photon interactions with anti-squeezing
• In-situ amplification of spin echoes within a kinetic inductance parametric amplifier
• Strong coupling of Fe-Co alloy with ultralow damping to superconducting co-planar waveguide resonators
• Superconducting microresonators for electron spin resonance, the good, the bad, and the future
• Spin echo silencing using a current-biased frequency-tunable resonator
• Spin Environment of a Superconducting Qubit in High Magnetic Fields
• Spatially-resolved decoherence of donor spins in silicon strained by a metallic electrode
• High-impedance resonators for strong coupling to an electron on helium
• On-Chip Detection of Electronuclear Transitions in the ${}^{155,157}$Gd Multilevel Spin System
• Nanoscale magnets embedded in a microstrip
• Pulsed Electron Spin Resonance of an Organic Microcrystal by Dispersive Readout
• Kinetic inductance coupling for circuit QED with spins
• Polarizing electron spins with a superconducting flux qubit
• Electromagnetic response of the surface states of a topological insulator nanowire embedded within a resonator