Quantum photonics hybrid integration platform
Applied Physics Letters
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Murray, E., Ellis, D., Meany, T., Floether, F., Lee, J., Griffiths, J., Jones, G., et al. (2015). Quantum photonics hybrid integration platform. Applied Physics Letters, 107 (171108)https://doi.org/10.1063/1.4935029
Fundamental to integrated photonic quantum computing is an on-chip method for routing and modulating quantum light emission. We demonstrate a hybrid integration platform consisting of arbitrarily designed waveguide circuits and single-photon sources. InAs quantum dots (QD) embedded in GaAs are bonded to a SiON waveguide chip such that the QD emission is coupled to the waveguide mode. The waveguides are SiON core embedded in a SiO2 cladding. A tuneable Mach Zehnder interferometer (MZI) modulates the emission between two output ports and can act as a path-encoded qubit preparation device. The single-photon nature of the emission was verified using the on-chip MZI as a beamsplitter in a Hanbury Brown and Twiss measurement.
Quantum dots, III-V semiconductors, Photonic crystal waveguides, Photons, Photonics
E.M. and T.M. acknowledge support by the Marie Curie Actions within the Seventh Framework Programme for Research of the European Commission, under the Initial Training Network PICQUE (Grant No. 608062). F.F. acknowledges support from both the EPSRC and Toshiba Research Europe Ltd., Cambridge. J.L. acknowledges support from both the EPSRC CDT in Photonic Systems Development and Toshiba Research Europe Ltd., Cambridge. The authors acknowledge funding from the EPSRC for the MBE system used in the production of the QD samples.
External DOI: https://doi.org/10.1063/1.4935029
This record's URL: https://www.repository.cam.ac.uk/handle/1810/252467