Induced Photon Correlations Through the Overlap of Two Four‐Wave Mixing Processes in Integrated Cavities. Issue 9 (20th July 2020)

• Record Type: Journal Article
• Authors: Zhang, Yanbing; Kues, Michael; Roztocki, Piotr; Reimer, Christian; Fischer, Bennet; MacLellan, Benjamin; Bisianov, Arstan; Peschel, Ulf; Little, Brent E.; Chu, Sai T.; Moss, David J.; Caspani, Lucia; Morandotti, Roberto
• Is Part Of: Laser & photonics reviews. Volume 14:Issue 9(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-20
• Subjects: correlated photon pairs -- integrated devices -- spontaneous four‐wave mixing; Lasers -- Periodicals; Photonics -- Periodicals; Lasers -- Périodiques; Photonique -- Périodiques; 621.36
• DOI: 10.1002/lpor.202000128
• Languages: English
• ISSNs: 1863-8880

Abstract

Abstract: Induced photon correlations are directly demonstrated by exploring two coupled nonlinear processes in an integrated device. Using orthogonally polarized modes within an integrated microring cavity, phase matching of two different nonlinear four‐wave mixing processes is achieved simultaneously, wherein both processes share one target frequency mode, while their other frequency modes differ. The overlap of these modes leads to the coupling of both nonlinear processes, producing photon correlations. The nature of this process is confirmed by means of time‐ and power‐dependent photon correlation measurements. These findings are relevant to the fundamental understanding of spontaneous parametric effects as well as single‐photon‐induced processes, and their effect on optical quantum state generation and control. Abstract : It is demonstrated that the coupling of two spontaneous nonlinear parametric optical processes can bring about induced photon correlations. The two processes are excited within a nonlinear integrated ring resonator and linked by radiation into a common frequency mode. These findings contribute to the fundamental understanding of spontaneous parametric processes and their control.