%A Rong-Guo Yang(杨荣国), Jing-jing Wang(王晶静), Jing Zhang(张静), Heng-Xin Sun(孙恒信)
%T Generation of entangled TEM01 modes withperiodically poled KTiOPO4 crystal
%0 Journal Article
%D 2016
%J Chin. Phys. B
%R 10.1088/1674-1056/25/7/074208
%P 74208-074208
%V 25
%N 7
%U {https://cpb.iphy.ac.cn/CN/abstract/article_118744.shtml}
%8 2016-07-05
%X Spatial quantum optics based on the high-order transverse mode is important for the super-resolution measurement and quantum image beyond the shot noise level. Quantum entanglement of the transverse plane Hermite-Gauss TEM01 mode has been demonstrated experimentally in this paper. Two squeezed TEM01 modes, which are generated by a pair of degenerate optical parametric amplifiers (DOPA) with the nonlinear crystals of periodically poled KTiOPO4, have been combined to produce TEM01 mode entanglement using a beam splitter. The 1.5 dB for the sum of amplitude and 1.2 dB for the difference of phase below shot-noise level is achieved with the measurement system of a Bell state detection.