Demultiplexer of Multi-Order Correlation Interference in Nitrogen Vacancy Center Diamond

• Published in: Materials Vol. 14; no. 22; p. 6745
• Main Authors: Li, Xinghua, Raza, Faizan, Li, Yufeng, Wang, Jinnan, Wang, Jinhao, Ali, Hasnain, Wang, Luyuan, Zhao, Yuan, Zhang, Yanpeng
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 09.11.2021; MDPI
• Subjects: Atoms & subatomic particles; Demultiplexers; Diamonds; Experiments; Interference; Lasers; Low temperature; Nitrogen; nitrogen vacancy center diamond; Noise; optical demultiplexer; Quantum computing; quantum computing and communications; Quantum physics; Sensors; Vacancies; quantum computing and communications; nitrogen vacancy center diamond; optical demultiplexer
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma14226745

We reported the second- and third-order temporal interference of two non-degenerate pseudo-thermal sources in a nitrogen-vacancy center (NV ). The relationship between the indistinguishability of source and path alternatives is analyzed at low temperature. In this article, we demonstrate the switching between three-mode bunching and frequency beating effect controlled by the time offset and the frequency difference to realize optical demultiplexer. Our experimental results suggest the advanced technique achieves channel spacing and speed of the demultiplexer of about 96% and 17 ns, respectively. The proposed demultiplexer model will have potential applications in quantum computing and communication.