Spin detection with a micromechanical trampoline: Towards magnetic resonance microscopy harnessing cavity optomechanics

Abstract

We explore the prospects and benefits of combining the techniques of cavity optomechanics with efforts to image spins using magnetic resonance force microscopy (MRFM). In particular, we focus on a common mechanical resonator used in cavity optomechanics -- high-stress stoichiometric silicon nitride (Si${}_3$N${}_4$) membranes. We present experimental work with a trampoline membrane resonator that has a quality factor above $10^6$ and an order of magnitude lower mass than a comparable standard membrane resonators. Such high-stress resonators are on a trajectory to reach 0.1 $\mathrm{aN}/\sqrt{\mathrm{Hz}}$ force sensitivities at MHz frequencies by using techniques such as soft clamping and phononic-crystal control of acoustic radiation in combination with cryogenic cooling. We present a demonstration of force-detected electron spin resonance of an ensemble at room temperature using the trampoline resonators functionalized with a magnetic grain. We discuss prospects for combining such a resonator with an integrated Fabry-Perot cavity readout at cryogenic temperatures, and provide ideas for future impacts of membrane cavity optomechanical devices on MRFM of nuclear spins.

arXiv comment19 pages, 8 figures, 3 tables

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Cited by in corpus (33)

• Single-Spin Magnetomechanics with Levitated Micromagnets
• Ground State Cooling of an Ultracoherent Electromechanical System
• Membrane-based scanning force microscopy
• Hierarchical tensile structures with ultralow mechanical dissipation
• Room-temperature quantum optomechanics using an ultra-low noise cavity
• Theory of Quantum Acoustomagnonics and Acoustomechanics with a Micromagnet
• Quantum Acoustomechanics with a Micromagnet
• Higher-order exceptional point in a pseudo-Hermitian cavity optomechanical system
• Micromechanical bolometers for sub-Terahertz detection at room temperature
• Analysis of membrane phononic crystals with wide bandgaps and low-mass defects
• Mass sensing for the advanced fabrication of nanomechanical resonators
• Fractal-like mechanical resonators with soft-clamped fundamental mode
• Influence of clamp-widening on the quality factor of nanomechanical silicon nitride resonators
• Laser cooling a membrane-in-the-middle system close to the quantum ground state from room temperature
• Soft-clamped phononic dimers for mechanical sensing and transduction
• Optomechanical-interface-induced strong spin-magnon coupling
• Roadmap on Nanoscale Magnetic Resonance Imaging
• Spin detection via parametric frequency conversion in a membrane resonator
• Towards a quantum interface between spin waves and paramagnetic spin baths
• Higher-order exceptional point in a blue-detuned non-Hermitian cavity optomechanical system
• Efficient entanglement of spin qubits mediated by a hot mechanical oscillator
• Towards cavity-free ground state cooling of an acoustic-frequency silicon nitride membrane
• Strong parametric coupling between two ultra-coherent membrane modes
• Membrane-in-the-middle optomechanics with a soft-clamped membrane at milliKelvin temperatures
• Enhancing Membrane-Based Scanning Force Microscopy Through an Optical Cavity
• Edge mode engineering for optimal ultracoherent silicon nitride membranes
• Optomechanical strong coupling between a single cavity photon and a single atom
• Ultra-coherent nanomechanical resonators based on inverse design
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• Magnetic Trampoline Resonators from (La,Sr)MnO3 Single-Crystal Thin Films
• On-Chip Frequency Noise Cancellation in Nanomechanical Resonators using Cavity Optomechanics
• Soft-clamped silicon nitride string resonators at millikelvin temperatures
• A Sub-kHz Mechanical Resonator Passively Cooled to 6 mK