摘要
In this paper,we investigate the phase sensitivities in two-path optical interferometry with asymmetric beam splitters.Here,we present the optimal conditions for the transmission ratio and the phase of the beam splitter to gain the highest sensitivities for a general class of non-classical states with parity symmetry.Additionally,we address the controversial question of whether the scheme with a combination of coherent state and photon-added or photon-subtracted squeezed vacuum state is better or worse than the most celebrated one using a combination of coherent state and squeezed vacuum state.
基金
supported by the National Natural Science Foundation of China(Grant Nos.11747161,and 11974189)
the Priority Academic Program Development of Jiangsu Higher Education Institutions.Peng Xu acknowledges the support from the National Natural Science Foundation of China(Grant No.11847050)
Natural Science Foundation of Jiangsu Province in China(Grant No.BK20180750)。
