School of Physical Sciences
Jawaharlal Nehru University, New Delhi
Title : Quantum information using integrated photonics
Speaker: Jasleen Lugani, Institute of Applied Physics,
Friedrich Schiller Universität, Jena, Germany
Date: March– 04 -2020
Time: 4.00 pm, Wednesday
Venue: Seminar Room, SPS
Abstract
Integrated optics platforms are widely explored nowadays for implementing quantum
information processing protocols and developing quantum technologies. In comparison to their bulk
counterparts, photonics circuits offer advantages in terms of scalability, stability and reconfigurability.
With this motivation, several on-chip linear optical networks based on different material platforms have been explored to generate and process quantum states of light for a wide range of experiments ranging from bosonic transport simulations [1] to universal linear optics circuit [2]. In this talk, I will give a brief introduction and performance comparison of these integrated photonics platforms. I will focus on a few waveguide devices based on lithium niobate for photon pair generation and our work on an 8-mode reconfigurable circuit based on Si3N4 waveguides [3] which acts as a photonic processor with a strong potential for realizing quantum information processing protocols. Within this context, I will also introduce an optical fiber network scheme for generating heralded single photons and using them for multi-photon interference experiments.
[1] N. C. Harris, et al., "Quantum transport simulations in a programmable nanophotonic processor", Nat.
Photonics 11, 447 (2017).
[2] J. Carolan et al., "Universal linear optics", Science 349, 711 (2015).
[3] C. Taballione et al., "8 x 8 programmable quantum photonic processor based on silicon nitride waveguides",
Opt. Express 27, 26842 (2019).
Seminar Incharge
