Chromatic interferometry with small frequency differences

Journal Article · 11 October 2020 · Optics Express

DOI: https://doi.org/10.1364/OE.402560 · OSTI ID:1671856

Qu, Luo-Yuan; Liu, Lu-Chuan; Cotler, Jordan; Ma, Fei; Guan, Jian-Yu; Zheng, Ming-Yang; Yao, Quan; Xie, Xiuping; Chen, Yu-Ao; Zhang, Qiang; Wilczek, Frank; Pan, Jian-Wei

By developing a ‘two-crystal’ method for color erasure, we can broaden the scope of chromatic interferometry to include optical photons whose frequency difference falls outside of the 400 nm to 4500 nm wavelength range, which is the passband of a PPLN crystal. We demonstrate this possibility experimentally, by observing interference patterns between sources at 1064.4 nm and 1063.6 nm, corresponding to a frequency difference of about 200 GHz.

• Research Organization: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
• Sponsoring Organization: Anhui Initiative in Quantum Information Technologies; Chinese Academy of Sciences; European Research Council; Harvard University; Hertz Foundation; National Key Research and Development Program of China; National Natural Science Foundation of China; Shanghai Municipal Science and Technology Major Project; Stanford Graduate Fellowship program; Swedish Research Council; USDOE; USDOE Office of Science (SC)
• Grant/Contract Number: SC0012567
• OSTI ID: 1671856
• Journal Information: Optics Express, Journal Name: Optics Express Journal Issue: 22 Vol. 28; ISSN 1094-4087; ISSN OPEXFF
• Publisher: Optical Society of AmericaCopyright Statement
• Country of Publication: United States
• Language: English