Compare Papers
Paper 1
Minimal qudit code for a qubit in the phase-damping channel
Stefano Pirandola, Stefano Mancini, Samuel L. Braunstein, David Vitali
- Year
- 2007
- Journal
- arXiv preprint
- DOI
- arXiv:0705.1099
- arXiv
- 0705.1099
Using the stabilizer formalism we construct the minimal code into a D-dimensional Hilbert space (qudit) to protect a qubit against phase damping. The effectiveness of this code is then studied by means of input-output fidelity.
Open paperPaper 2
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.
Open paper