Electron Spin Resonance spectroscopy with femtoliter detection volume

Abstract

We report electron spin resonance measurements of donors in silicon at millikelvin temperatures using a superconducting $LC$ planar micro-resonator and a Josephson Parametric Amplifier. The resonator includes a nanowire inductor, defining a femtoliter detection volume. Due to strain in the substrate, the donor resonance lines are heavily broadened. Single-spin to photon coupling strengths up to $\sim 3\text{kHz}$ are observed. The single shot sensitivity is $120\pm 24$spins/Hahn echo, corresponding to $\approx 12\pm 3$~spins$/\sqrt{\text{Hz}}$ for repeated acquisition.

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References in corpus (18)

• Van der Waals heterostructures
• Single-shot readout of an electron spin in silicon
• Coherent coupling of a superconducting flux-qubit to an electron spin ensemble in diamond
• Atomic clock transitions in silicon-based spin qubits
• Reaching the quantum limit of sensitivity in electron spin resonance
• Controlling spin relaxation with a cavity
• Initializing, manipulating and storing quantum information with bismuth dopants in silicon
• Electron Spin Resonance at the Level of 10000 Spins Using Low Impedance Superconducting Resonators
• Electron spin coherence and electron nuclear double resonance of Bi donors in natural Si
• Inductive-detection electron-spin resonance spectroscopy with $65$spins$/\sqrt{\text{Hz}}$ sensitivity
• High-gain weakly nonlinear flux-modulated Josephson parametric amplifier using a SQUID-array
• Magnetic resonance with squeezed microwaves
• Fast, low-power manipulation of spin ensembles in superconducting microresonators
• Superconducting coplanar waveguide resonators for low temperature pulsed electron spin resonance spectroscopy
• Bismuth in silicon qubits: the role of EPR cancellation resonances
• Linear hyperfine tuning of donor spins in silicon using hydrostatic strain
• Strain-induced spin resonance shifts in silicon devices
• Pulsed electron spin resonance spectroscopy in the Purcell regime

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