Presentation Information
[23p-71B-7]Simultaneous generation of visible-infrared entangled-photon pairs with periodically poled crystal
〇Koichiro TANAKA1 (1.Dept. Phys., Kyoto Univ.)
Keywords:
Periodically-poled crystal,Entangled-photon
Quantum entangled states of light are quantum states in which there exist special correlations between multiple photons in terms of the photon's degrees of freedom (frequency, wave vector, polarization, and time), and exhibit unique phenomena that cannot be described in the classical picture. A typical method for generating entangled photon pairs is the spontaneous parametric downward conversion (SPDC) process, a nonlinear phenomenon in which a single photon coherently splits into two correlated photons with degrees of freedom in polarization, frequency, and wavenumber vector. We have found that multiple SPDC processes can be allowed to occur simultaneously (simultaneous SPDC) when a periodically poled crystal is used under certain special conditions. This allows us to generate broadband nondegenerate visible-infrared quantum entangled light. In this talk, we will discuss the principle and evaluation of this method