Design and fabrication of reconfigurable integrated photonic chips for quantum optical applications by Ivan Dyakonov, Research fellow, Lomonosov MSU
The state-of-the-art experimental quantum computing research focuses on refining physical platforms applicable for mid- and large-scale quantum processing devices implementation. The linear-optical approach to quantum computing is a workhorse for simple proof-of-principle experiments. Recent developments on implementation of low-loss integrated photonic chips and efficient single-photon sources and detectors determined a promising trend for potential scalability of linear-optical quantum systems. The talk contains brief introduction to linear-optical quantum computing architecture and a more detailed description of the current experimental research activities on the reconfigurable photonic chips design, fabrication and characterization in quantum optical technologies lab.
Reconfigurable integrated photonics is a versatile tool for both classical and quantum computing applications. The devices are typically fabricated on SOI, SixNy, doped silica and other platforms using standard lithographic technological process. However, complex quantum optical experiments usually require the flexibility of the fabrication process thus an integrated device prototyping technology might be more favorable for fundamental tasks. The femtosecond laser writing technique is an established tool for fabrication of low-loss integrated waveguides in dielectric materials. Furthermore, the writing facility can be used for creating thermooptically reconfigurable integrated photonic devices. The technology doesn’t require any specific conditions and materials and allows very fast prototyping of the devices for quantum optical experiments right in the lab. In this talk I will describe the process of building a plug-and-play programmable integrated photonic device from the scratch and describe current challenges in designing efficient linear optical quantum gates.
Ivan Dyakonov – research fellow, Lomonosov MSU (supervised by Sergei Kulik, quantum optical technologies lab).
Received the master’s degree in physics on the Physics Faculty of Lomonosov MSU in 2014. The MsC thesis was based on the experiments on biphoton state spectral engineering. From the beginning of his PhD and up to present day works on the reconfigurable integrated photonic chips fabrication and their applications to quantum optics and quantum information processing.
- V. Dyakonov, I. A. Pogorelov, I. B. Bobrov, A. A. Kalinkin, S. S. Straupe, S. P. Kulik, P. V. Dyakonov, and S. A. Evlashin. Reconfigurable photonics on a glass chip. Phys. Rev. Applied 10, 044048 (2018)
- V. Dyakonov, M. Yu. Saygin, I.V. Kondratyev, A.A. Kalinkin, S.S. Straupe, S.P. Kulik. Laser-written polarizing directional coupler with reduced interaction length.Optics letters, 42, 20, 4231-4234 (2017)
- V. Dyakonov, A. A. Kalinkin, M. Yu. Saygin, A. G. Abroskin, I. V. Radchenko, S. S. Straupe and S. P. Kulik. Low-loss single-mode integrated waveguides in soda-lime glass.Applied Physics B, 122, 9, 1-7 (2016)