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. Author manuscript; available in PMC: 2021 Nov 22.
Published in final edited form as: Nat Photonics. 2020;14(5):10.1038/s41566-020-0609-x. doi: 10.1038/s41566-020-0609-x

Fig. 3. Hybrid integration of key quantum photonic resources.

Fig. 3

(a) Wafer bonding of GaAs ring resonator with QDs to silicon nitride waveguides: single photons from the QD are adiabatically coupled to the silicon nitride waveguide with Purcell enhancement due to the cavity[20]. (b) Encapsulation of multiple nanowire quantum dot single photon sources in silicon nitride waveguides[22]. (c) Coupling of defects in hBN as single photon sources with an aluminum nitride waveguides using exfoliation and stamping [75]. (d) Hybrid integration of telecom QDs to lithium niobate waveguide [25]. (e) Hybrid integration of Barium titanate electro-optic modulator to silicon photonics platform with potential quantum applications due to the low insertion loss and the fast switching speeds [80]. (f) Interfacing III-V QD chip with configurable silicon nitride photonic circuit [29]. (g) Hybrid integration of SNSPDs fabricated on SiN membranes on aluminum nitride photonic waveguides using pick and place technique [60]. (h) Pick and place hybrid integration of long lived diamond quantum memories on silicon nitride waveguides., coherence times of the spin up to 120 microseconds[28]. (i) Strong coupling of QDs in GaAs nanobeam cavity to silicon waveguide [32].