QUANTUM NANOPHOTONICS LABORATORY

Solid-state single-quantum emitters are crucial resources for on-chip photonic quantum technologies and require efficient cavity-emitter coupling to realize quantum networks beyond the single-node level.

One-dimensional materials

Single-walled carbon nanotubes (SWCNTs) are promising absorbers and emitters in applications including solar energy conversion, biological imaging, and on-chip quantum photonics such as room-temperature single photon emission in oxygen-doped SWCNTs and quantum optical circuits with integrated superconducting detectors.

References:

1.Luo, Y., et al., Nat. Commun. 8, 1413 (2017).

2.He,X., et al., ACS Nano 11, 10785-10796 (2017).

3.Luo, Y., et al., Nano Lett. 19, 9037-9044 (2019)

Two-dimensional materials

Transition metal dichalcogenides (TMDs, MX₂ with M = Mo, W and X = S, Se) are a new class of two-dimensional (2D) semiconductors. Recent advances in monolayer semiconductors based on TMDs have demonstrated that tungsten diselenide (WSe₂) can host randomly located quantum emitters. Our research is based on the top-down approach to auto couple the deterministically created quantum emitter in 2D material with the plasmonic nanocavities. Ultra-high Purcell factor and quantum yield can be achieved.

References:

1.Luo, Y.,et al., Nat. Nanotechnol. 13, 1137-1142 (2018).

2.Luo, Y., et al., Nano Lett. 20, 5119–5126-(2020).