[20p-W541-1~16] 3.10 光量子物理・技術

▲ [20p-W541-3] Spectral correlation measurement in Hong-Ou-Mandel interference between two independent sources

〇Jin Ruibo¹、Gerrits Thomas²、Fujiwara Mikio¹、Wakabayashi Ryota^1,3、Yamashita Taro¹、Miki Shigehito¹、Terai Hirotaka¹、Shimizu Ryosuke⁴、Takeoka Masahiro¹、Sasaki Masahide¹ (1.NICT、2.NIST、3.Waseda University、4.UEC)

キーワード：Hong-Ou-Mandel interference,Independent sources,Spectral correlation measurement

Hong-Ou-Mandel (HOM) interference between independent photon sources (HOMI-IPS) is the fundamental block for quantum information processing. All the previous HOMI-IPS experiments were carried out in time-domain, however, the spectral information during the interference was omitted. Here, we investigate the HOMI-IPS in spectral domain using the recently developed fast fiber spectrometer, and demonstrate the spectral distribution during the HOM interference between two heralded single-photon sources, and two thermal sources. This experiment not only can deepen our understanding of HOMI-IPS from the viewpoint of spectral domain, but also presents a tool to test the theoretical predictions of HOMI-IPS using spectrally engineered sources. Figure 1 shows the experimental setup and Fig.2 shows the experimentally measured joint spectral distribution at different delay positions.