[21a-E214-1~9] 4.6 Quantum Optics and Nonlinear Optics

▲ [21a-E214-3] Spatial mode detection by means of a nonlinear parametric upconversion process

〇(P)Adam Valles¹、Bereneice Sephton²、Andrew Forbes² (1.Chiba Univ., Japan、2.Wits Univ., South Africa)

キーワード：Nonlinear optics, Quantum state tomography, Mode detection

The efficient creation and detection of spatial modes of light has become topical of late, driven by the need to increase photon bit-rates in classical and quantum communications. Here we put forward a new spatial mode detection technique based on the nonlinear optical process of sum-frequency generation, also showing that the method can be used to transfer an image from the infrared band to the visible, which implies the efficient conversion of many spatial modes.