Scalable Integration of Long-Lived Quantum Memories into a Photonic Circuit
Author(s)Mouradian, Sara L.; Poitras, Carl B.; Li, Luozhou; Chen, Edward H.; Cardenas, Jaime; Markham, Matthew L.; Twitchen, Daniel J.; Lipson, Michal; Schroder, Tim; Goldstein, Jordan A.; Walsh, Michael P.; Englund, Dirk Robert; ... Show more Show less
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We demonstrate a photonic circuit with integrated long-lived quantum memories. Precharacterized quantum nodes—diamond microwaveguides containing single, stable, negatively charged nitrogen-vacancy centers—are deterministically integrated into low-loss silicon nitride waveguides. These quantum nodes efficiently couple into the single-mode waveguides with >1 Mcps collected into the waveguide, have narrow single-scan linewidths below 400 MHz, and exhibit long electron spin coherence times up to 120 μs. Our system facilitates the assembly of multiple quantum nodes with preselected properties into a photonic integrated circuit with near unity yield, paving the way towards the scalable fabrication of quantum information processors.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Research Laboratory of Electronics
Physical Review X
American Physical Society
Mouradian, Sara L., et al. "Scalable Integration of Long-Lived Quantum Memories into a Photonic Circuit." Phys. Rev. X 5, 031009 (July 2015).
Final published version