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Quantum interference between transverse spatial waveguide modes

Author

Listed:
  • Aseema Mohanty

    (School of Electrical and Computer Engineering, Cornell University
    Columbia University)

  • Mian Zhang

    (School of Electrical and Computer Engineering, Cornell University
    School of Engineering and Applied Sciences, Harvard University)

  • Avik Dutt

    (School of Electrical and Computer Engineering, Cornell University
    Columbia University)

  • Sven Ramelow

    (School of Applied and Engineering Physics, Cornell University
    Institute for Physics, Humboldt-University Berlin)

  • Paulo Nussenzveig

    (Instituto de Fisica, Universidade de São Paulo)

  • Michal Lipson

    (School of Electrical and Computer Engineering, Cornell University
    Columbia University
    Kavli Institute at Cornell for Nanoscale Science, Cornell University)

Abstract

Integrated quantum optics has the potential to markedly reduce the footprint and resource requirements of quantum information processing systems, but its practical implementation demands broader utilization of the available degrees of freedom within the optical field. To date, integrated photonic quantum systems have primarily relied on path encoding. However, in the classical regime, the transverse spatial modes of a multi-mode waveguide have been easily manipulated using the waveguide geometry to densely encode information. Here, we demonstrate quantum interference between the transverse spatial modes within a single multi-mode waveguide using quantum circuit-building blocks. This work shows that spatial modes can be controlled to an unprecedented level and have the potential to enable practical and robust quantum information processing.

Suggested Citation

  • Aseema Mohanty & Mian Zhang & Avik Dutt & Sven Ramelow & Paulo Nussenzveig & Michal Lipson, 2017. "Quantum interference between transverse spatial waveguide modes," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14010
    DOI: 10.1038/ncomms14010
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