On-chip Scalable Multifunctional Optical Networks Integrated with Quantum Dot Single Photon Source: Simulated Response of Dielectric Nanoantana-Waveguide-Beamsplitter Unit

Recently we demonstrated arrays of Mesa Top Single Quantum Dots (MTSQDs) as spectrally uniform on-chip single photon sources [1] that can be readily overgrown and planarized, enabling monolithic integration in scalable optical networks for quantum information processing (QIP). For realization of such networks, we have proposed a new approach [2] that exploits collective Mie resonances of arrays of subwavelength size dielectric building blocks (DBBs) to provide, simultaneously, the needed source light manipulating functions of enhanced and directional emission (nanoantenna) and waveguiding [1]. In this talk, we extend our design to the nanoantenna-waveguide-beamsplitting-recombining unit that exploits a single collective magnetic dipole mode to provide not only enhancement of the emission rate of the MTSQD to improve photon indistinguishability, and directing and propagating the emitted photons on-chip, but also splitting and recombining single photons enabling photon interference, a key for on-chip path entanglement. Such MTSQD-DBB units will serve as building blocks to realize scalable quantum optical networks for QIP.
[1] J. Zhang et.al, J. Appl. Phys. 120, 243103(2016)
[2] S. Chattaraj et.al, J. Opt. Soc. Am. B 33, 2414(2016)