Landau-Zener transition in a continuously measured single-molecule spin transistor

Abstract

We monitor the Landau-Zener dynamics of a single-ion magnet in a spin-transistor geometry. For increasing field-sweep rates, the spin reversal probability shows increasing deviations from that of a closed system. In the low-conductance limit, such deviations are shown to result from a dephasing process. In particular, the observed behaviors are succesfully simulated by means of an adiabatic master equation, with time averaged dephasing (Lindblad) operators. The time average is tentatively interpeted in terms of the finite time resolution of the continuous measurement.

To appear in Physical Review Letters

References in corpus (4)

• Quantum tunneling of magnetization in lanthanide single-molecule magnets, bis(phthalocyaninato)terbium and bis(phthalocyaninato)-dysprosium anions
• Dissipative Landau-Zener transitions of a qubit: bath-specific and universal behavior
• Dissipative Landau-Zener level crossing subject to continuous measurement: Excitation despite decay
• Landau-Zener evolution under weak measurement: Manifestation of the Zeno effect under diabatic and adiabatic measurement protocols

Cited by in corpus (5)

• Operating Quantum States in Single Magnetic Molecules: Implementation of Grover's Quantum Algorithm
• Photon-assisted Landau-Zener transitions in a periodically driven Rabi dimer coupled to a dissipative mode
• Generalized Adiabatic Impulse Approximation
• Decoherence measurements in crystals of molecular magnets
• Revealing the internal spin dynamics in a double quantum dot by periodic voltage modulation