Proposes covariance magnetometry to detect anisotropic magnetic noise that distinguishes vortex motion (perpendicular drift via Magnus force) from quasiparticle transport in thin-film superconductors.
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A driven-dissipative altermagnetic magnon bath generates an extended LLG equation with two spatially nonlocal anisotropic damping terms, one non-Markovian, for controlling classical spin dynamics in AMI/FI bilayers.
Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
Correlated dephasing of two spin qubits near materials isolates rotational symmetry in nonlocal noise correlations, enabling discrimination of s-, d-, and g-wave superconducting gaps and altermagnet types at nanoscale and low frequencies.
Gaussian superconducting fluctuations produce distinct two-point magnetic noise spectra in 2D and wire systems that are directly measurable by NV-center spin qubits.
citing papers explorer
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Detecting vortex motion through spatially correlated nonequilibrium noise
Proposes covariance magnetometry to detect anisotropic magnetic noise that distinguishes vortex motion (perpendicular drift via Magnus force) from quasiparticle transport in thin-film superconductors.
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Engineering a driven-dissipative bath of altermagnetic quantum magnons for controlling classical dynamics of spins hosting spin waves, domain walls, or skyrmions
A driven-dissipative altermagnetic magnon bath generates an extended LLG equation with two spatially nonlocal anisotropic damping terms, one non-Markovian, for controlling classical spin dynamics in AMI/FI bilayers.
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Precision Limits of Multiparameter Markovian-Noise Metrology
Ultimate precision bounds for multiparameter Markovian noise metrology show average variance scaling as Ω(1/(T R²)) with Heisenberg scaling in dissipative channels R when using entangled probes and high-rank signal correlations, attainable via rapid prepare-and-measure protocols.
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Correlated Quantum Dephasometry: Symmetry-Resolved Noise Spectroscopy of Two-Dimensional Superconductors and Altermagnets
Correlated dephasing of two spin qubits near materials isolates rotational symmetry in nonlocal noise correlations, enabling discrimination of s-, d-, and g-wave superconducting gaps and altermagnet types at nanoscale and low frequencies.
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Signatures of Gaussian superconducting fluctuations in nonlocal noise magnetometry
Gaussian superconducting fluctuations produce distinct two-point magnetic noise spectra in 2D and wire systems that are directly measurable by NV-center spin qubits.