A single-point measurement scheme for quantum work based on the squeezing state

Bao-Ming Xu(徐宝明),Jian Zou(邹健),Zhan-Chun Tu(涂展春)

Figure 3. (a) Incoherent work ⟨W+⟩ + ⟨W−⟩ (black curve) and the fluctuation of the difference of internal energy $\tfrac{1}{2}\beta \delta {({\rm{\Delta }}{{ \mathcal H }}_{s})}^{2}$ (red curve) and (b) coherent work ⟨Wc⟩ (olive curve) as functions of the evolution period $t^{\prime} $. ${\nu }_{t^{\prime} }=1.8{\nu }_{0}$, σ = ν0, $\beta ={10}^{-2}{\nu }_{0}^{-1}$ and ν0 = 1.