Comment in 2020

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  • Jonathan P. Dowling, who died in June, was a pioneer in quantum optics and one of the founders of the US government’s research programme in quantum information.

    • James Franson
    • Mark M. Wilde
    Comment
  • Unidirectional and topological surface plasmon polaritons are currently attracting substantial interest and intense debate. Realistic material models and energy conservation considerations are essential to correctly understand extreme wave effects in non-reciprocal plasmonics, and to assess their potential for novel devices.

    • Francesco Monticone
    Comment
  • Philip Warren Anderson is one of the founding fathers of modern condensed-matter physics. With his death on 29 March 2020, we have lost one of the most influential physicists of the twentieth century.

    • Diederik S. Wiersma
    • Bart A. van Tiggelen
    • Ad Lagendijk
    Comment