Super-resolution and super-sensitivity of entangled squeezed vacuum state using optimal detection strategy

Zhang Jiandong¹, Zhang Zijing^{1, †}, Cen Longzhu¹, Li Shuo¹, Zhao Yuan^{1, ‡}, Wang Feng²

(color online) (a) Variation of signal resolution with different squeezing parameters. (b) Variation of signal resolution with critical condition.