ENTANGLEMENT OF AMPLITUDE AND OPTICAL PHASE INVOLVED IN THE EPR EIGENSTATE
Hong-Yi Fan, Yue Fan · Modern Physics Letters B · 2000
By noticing that although single-mode Susskind–Glogower phase operator does not commute with photon number operator, two-mode nonlinear phase operator commutes with number-difference operator. We reveal that the common eigenstate , where [Formula: see text] is a deductive state of |η>.