Learn about CMB polarization telescopes in this lecture segment from Kyoto University's public course on Physics and the Universe. Associate Professor Osamu Tajima from the Graduate School of Science explains how these specialized instruments observe cosmic microwave background radiation and its fluctuations. Delivered at Kyoto University's Centennial Clock Tower Memorial Hall, this chapter focuses on the technical aspects of measuring cosmic and quantum fluctuations through CMB polarization, providing insights into our understanding of the early universe.