Pseudo-spin switches and geometrical phases in topological photonic systems

Yuma Kawaguchi; Daria Smirnova; Filipp Komissarenko; Svetlana Kiriushechkina; Anton Vakulenko; Andrea Alù; Alexander B. Khanikaev

doi:10.1117/12.2677120

4 October 2023 Pseudo-spin switches and geometrical phases in topological photonic systems

Yuma Kawaguchi, Daria Smirnova, Filipp Komissarenko, Svetlana Kiriushechkina, Anton Vakulenko, Andrea Alù, Alexander B. Khanikaev

Author Affiliations +

Proceedings Volume PC12647, Active Photonic Platforms (APP) 2023; PC126471A (2023) https://doi.org/10.1117/12.2677120
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Here we demonstrate that a unitary transformation due to nonuniform artificial gauge field enables a new class of topological boundary states carrying both spin and valley polarization. We show that such transformations also allow to tune radiative lifetimes of the hybrid spin-valley boundary modes. Then we demonstrate that gauge transformations, when applied adiabatically to the boundary modes, offer a mechanism for flipping the pseudo-spin without back reflection thus implementing an X-gate acting in synthetic Bloch subspaces spanned by pseudo-spins. Finally, we show that such adiabatic evolutions give rise to the geometrical phases, which offers a generic Phase-gate operation. Our results unveil a new versatile approach to control modes in topological photonics and also envisions topological materials as one of promising candidates for integrated quantum photonics applications.

Conference Presentation

Citation Download Citation

Yuma Kawaguchi, Daria Smirnova, Filipp Komissarenko, Svetlana Kiriushechkina, Anton Vakulenko, Andrea Alù, and Alexander B. Khanikaev "Pseudo-spin switches and geometrical phases in topological photonic systems", Proc. SPIE PC12647, Active Photonic Platforms (APP) 2023, PC126471A (4 October 2023); https://doi.org/10.1117/12.2677120

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available