Effect of the dispersion on multipartite continuous-variable entanglement in optical parametric amplifier
Chao Zhao · Chinese Physics B · 2015
tics by varying the interaction length when pumping a PPLN crystal with fs pulses. (22) We studied the phase mismatched phenomenon resulting from the dispersion effect, by period- ically changing the polarity of crystal to obtain the optimal squeezing condition, and obtained the characteristic of EPR entanglements. (23) In this paper, we discuss the influence of the dispersion effect, find the solution of the time-dependent FPE with the dispersion, and investigate the entanglement characteristics for N = 2-5 partite. The investigation is es- pecially important for the pulse OPO and the quantum charac- teristics of pulse frequency combs.