LZSM spectroscopy extracts a charge noise spectral density of 0.5-0.9 neV/√Hz in bilayer graphene quantum dots, with temperature and frequency dependence indicating dominance of thermal Johnson noise or electron-phonon coupling over two-level fluctuators.
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Global QPC measurement on a TQD chain engineers dephasing to increase barrier occupation toward 1/2 and maximize current, outperforming single-dot readout and becoming Hamiltonian-independent in the strong limit.
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Probing charge noise in bilayer graphene quantum dots by Landau-Zener-St\"uckelberg-Majorana spectroscopy
LZSM spectroscopy extracts a charge noise spectral density of 0.5-0.9 neV/√Hz in bilayer graphene quantum dots, with temperature and frequency dependence indicating dominance of thermal Johnson noise or electron-phonon coupling over two-level fluctuators.
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Collective charge measurement in quantum dot chains: controlling barrier occupation and tunneling current
Global QPC measurement on a TQD chain engineers dephasing to increase barrier occupation toward 1/2 and maximize current, outperforming single-dot readout and becoming Hamiltonian-independent in the strong limit.