A scheme for Sagnac-effect quantum enhancement with Fock state light input
Chen Kun, Chen Shu-Xin †, Wu De-Wei, Yang Chun-Yan, Miao Qiang
       

(color online) Phase errors of coherent state and Fock state input (the mean photon number of coherent state |α|2 = 2). (a) The phase error at different values of θ and mean photon number of Fock state; (b) the phase error curve near 0° area.