Generation of entangled TEM01 modes with periodically poled KTiOPO4 crystal

• 作者: 孙恒信 张静 杨荣国 王晶静
• 来源期刊: 中国物理B（英文版）
• 关键词: Hermite-Gauss mode entangled state degenerate optical parametric amplifier
• 年，卷（期）: 2016,（7）
• 页码范围: 074208-1-074208-3
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/25/7/074208

摘要

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.