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Paper 1
Towards Fault Tolerant Adiabatic Quantum Computation
Daniel A. Lidar
- Year
- 2007
- Journal
- arXiv preprint
- DOI
- arXiv:0707.0021
- arXiv
- 0707.0021
I show how to protect adiabatic quantum computation (AQC) against decoherence and certain control errors, using a hybrid methodology involving dynamical decoupling, subsystem and stabilizer codes, and energy gaps. Corresponding error bounds are derived. As an example I show how to perform decoherence-protected AQC against local noise using at most two-body interactions.
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Single-spin spectroscopy of spontaneous and phase-locked spin torque oscillator dynamics
Adrian Solyom, Michael Caouette-Mansour, Brandon Ruffolo, Patrick Braganca, Lilian Childress, Jack Sankey
- Year
- 2023
- Journal
- arXiv preprint
- DOI
- arXiv:2307.16049
- arXiv
- 2307.16049
We employ N-$V$ magnetometry to measure the stray field dynamics of a ferromagnetic permalloy nanowire driven by spin-orbit torques. Specifically, we observe the optically detected magnetic resonance (ODMR) signatures of both spontaneous DC-driven magnetic oscillations and phase-locking to a second harmonic drive, developing a simple macrospin model that captures the salient features. We also observe signatures of dynamics beyond the macrospin model, including an additional ODMR feature (associated with a second SW mode) and one mode sapping power from another. Our results provide additional insight into N-$V$-spin wave coupling mechanisms, and represent a new modality for sub-wavelength N-$V$ scanned probe microscopy of nanoscale magnetic oscillators.
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