We theoretically propose a cyclic quantum engine in which a single-qubit working medium undergoes finitetime unitary strokes with adjustable durations,followed by a projective measurement and an outcome-dependent cohe...We theoretically propose a cyclic quantum engine in which a single-qubit working medium undergoes finitetime unitary strokes with adjustable durations,followed by a projective measurement and an outcome-dependent coherent pulse(πorπ/2 rotation).The protocol separates two independent control handles:the unitary driving speedτdr,which governs nonadiabatic transitions and phase accumulation,and the measurement parameterθ,which sets the outcome probabilities and the magnitude of measurement-induced energy injection.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.12465009)the Major Program of the Jiangxi Provincial Natural Science Foundation(Grant No.20224ACB201007)。
文摘We theoretically propose a cyclic quantum engine in which a single-qubit working medium undergoes finitetime unitary strokes with adjustable durations,followed by a projective measurement and an outcome-dependent coherent pulse(πorπ/2 rotation).The protocol separates two independent control handles:the unitary driving speedτdr,which governs nonadiabatic transitions and phase accumulation,and the measurement parameterθ,which sets the outcome probabilities and the magnitude of measurement-induced energy injection.
