Hybrid Integrated Nonlinear Photonics: From Chipscale frequency combs to cryogenic interconnects

Departments: Applied Physics
Time: Monday, May 16, 2022 - 10:00am - 11:00am
Type: Solid State and Optics Seminar
Presenter: Tobias Kippenberg, Ph.D.; Swiss Federal Institute of Technology Lausanne (EPFL)
YQI or Zoom
United States

Special Solid State & Optics Seminar Series

Sponsored by "The Flint Fund Series on Quantum Devices and Nanostructures"

Tobias Kippenberg, Ph.D.
Swiss Federal Institute of Technology Lausanne (EPFL)

Monday, May 16, 2022
10:00 AM
YQI or Via Zoom

Zoom Link: https://yale.zoom.us/j/99200220562?pwd=R1ptVzhUNjFDTXZwYmk1WnBiWHkyZz09
Password: 547344

Hybrid Integrated Nonlinear Photonics: From Chipscale frequency combs to cryogenic interconnects

The development of optical frequency combs1, and notably self-referencing, has revolutionized precision measurements over the past decade, and enabled counting of the cycles of light. Frequency combs, have enabled dramatic advances in timekeeping, metrology and spectroscopy. In 2007, it was discovered that such combs can also be generated using an optical microresonator2 using parametric frequency conversion. Kerr combs also enable to generate dissipative temporal solitons (DKS)3,4, which are formally solutions to a driven dissipative nonlinear Schrödinger equation, termed Lugiato-Lefever equation – first derived to describe spatial self-organization phenomena5. DKS have unlocked the full potential of Kerr combs enabling a deterministic route to broadband, and coherent optical frequency combs, whose bandwidth can be enhanced using soliton broadening phenomena, such as Soliton Cherenkov Radiation6. Such Solitons Kerr combs on a chip have enabled to realize counting of the cycles of light, realize dual comb spectrometers on a chip, enabled dual comb based ultrafast ranging7, massively parallel coherent communication8, and offered a novel approach to massively parallel FCMW LiDAR9. Recent advances in developing ultra low loss integrated photonics10 based on silicon nitride (Si3N4), have enabled ultra-low propagation losses, enabling the direct integration with on chip pump lasers11. On the fundamental side, new and theoretically not previously predicted dynamics has been observed ranging from formation of soliton crystals12, soliton switching13, and new type of breather solitons14, and emergent nonlinear dynamics in arrays of coupled resonators15. Nonlinear driven integrated photonics circuits are thereby providing a highly fruitful new playground for fundamental nonlinear science and applications alike. Beyond this, ultra-low loss integrated photonics are giving rise to novel applications: for realizing traveling wave optical parametric amplifiers to heterogeneous integration with Lithium Niobate to create ultra low voltage modulators for that can serve as cryogenic interconnects for superconducting quantum computing.


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Hosted By: Peter Rakich; Applied Physics, Yale University