Electronically programmable photonic molecule

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

41 Scopus Citations
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  • Mian Zhang
  • Yaowen Hu
  • Amirhassan Shams-Ansari
  • Tianhao Ren
  • Shanhui Fan
  • Marko Lončar

Related Research Unit(s)


Original languageEnglish
Pages (from-to)36-40
Journal / PublicationNature Photonics
Issue number1
Online published14 Dec 2018
Publication statusPublished - Jan 2019


Physical systems with discrete energy levels are ubiquitous in nature and acre fundamental building blocks of quantum technology. Realizing controllable artificial atom- and molecule-like systems for light would enable coherent and dynamic control of the frequency, amplitude and phase of photons1–5. In this work, we demonstrate a ‘photonic molecule’ with two distinct energy levels using coupled lithium niobate microring resonators and control it by external microwave excitation. We show that the frequency and phase of light can be precisely controlled by programmed microwave signals, using concepts of canonical two-level systems including Autler–Townes splitting, Stark shift, Rabi oscillation and Ramsey interference. Through such coherent control, we show on-demand optical storage and retrieval by reconfiguring the photonic molecule into a bright–dark mode pair. These results of dynamic control of light in a programmable and scalable electro-optic system open doors to applications in microwave signal processing6, quantum photonic gates in the frequency domain7 and exploring concepts in optical computing8 and topological physics3,9.

Citation Format(s)

Electronically programmable photonic molecule. / Zhang, Mian; Wang, Cheng; Hu, Yaowen; Shams-Ansari, Amirhassan; Ren, Tianhao; Fan, Shanhui; Lončar, Marko.

In: Nature Photonics, Vol. 13, No. 1, 01.2019, p. 36-40.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal