Alessandro Fedrizzi

Associate Professor

+44 (0)131 451 3649
Room 1.07
David Brewster Building
Heriot-Watt University

My research focuses on the development of photonic quantum technology and its application to experimental quantum information processing—from foundational research to quantum communication, computation and metrology. Quantum technology is now on the brink of delivering devices that can surpass the capabilities of their classical counterparts. Photonics plays a key role in this quantum revolution, providing a scalable quantum processing platform in its own right, but also due to its unique ability to coherently connect other physical architectures. My goal is to drive all facets of this development, from improving primary photonic capabilities to creating scalable hybrid quantum systems.

Selected publications
  1. Measurements on the reality of the wavefunction
    M. Ringbauer, B. Duffus, C. Branciard, E. G. Cavalcanti, A. G. White & A. Fedrizzi
    Nature Physics 11, 249-254 (2015).
  2. Characterizing quantum dynamics with initial system-environment correlations
    M. Ringbauer, C. J. Wood, K. Modi, A. Gilchrist, A. G. White & A. Fedrizzi
    Physical Review Letters 114, 090402 (2015).    
  3. Spectral Compression of single photons 
    J. Lavoie, J. M. Donohue, L. G. Wright, A. Fedrizzi & K. J. Resch
    Nature Photonics 7, 363-366 (2013). 
  4. Experimental distribution of entanglement with separable carriers
    A. Fedrizzi, M. Zuppardo, G. G. Gillett, M. A. Broome, M. P. Almeida, M. Paternostro, A. G. White & T. Paterek
    Physical Review Letters 111, 320504 (2013).
  5. Photonic Boson Sampling in a tunable circuit
    M. A. Broome, A. Fedrizzi, S. Rahimi-Keshari, J. Dove, S. Aaronson, T. C. Ralph & A. G. White
    Science 339, 794-798 (2013).
  6. Conclusive quantum steering with superconducting transition edge sensors
    D. H. Smith, G. G. Gillett, M. P. Almeida, C. Branciard, A. Fedrizzi, T. J. Weinhold, A. Lita, B. Calkins, T. Gerrits, S.-W. Nam & A. G. White
    Nature Communications 3, 625 (2012).
  7. Observation of topologically protected bound states in photonic quantum walks
    T. Kitagawa, M. A. Broome, A. Fedrizzi, M. S. Rudner, E. Berg, I. Kassal, A. Aspuru-Guzik, E. Demler & A. G. White
    Nature Communications 3, 882 (2012).
  8. Engineered optical nonlinearity for quantum light sources
    A. M. Brańczyk, A. Fedrizzi, T. C. Ralph & A. G. White
    Optics Express 1, 55-65 (2011).
  9. Hardy’s paradox and violation of a state-independent Bell inequality in time
    A. Fedrizzi, M. P. Almeida, M. A. Broome, A. G. White & M. Barbieri
    Physical Review Letters 106, 200402 (2011). 
  10. Efficient measurement of quantum dynamics via compressive sensing
    A. Shabani, R. L. Kosut, M. Mohseni, H. Rabitz, M. A. Broome, M. P. Almeida, A. Fedrizzi, & A. G. White
    Physical Review Letters 106, 100401 (2011).
  11. Direct generation of photon triplets using cascaded photon pair sources
    H. Hübel, D. R. Hamel, A. Fedrizzi, S. Ramelow, K. J. Resch and T. Jennewein
    Nature 466, 601-603 (2010).
  12. Discrete single-photon quantum walks with tunable decoherence
    M. A. Broome, A. Fedrizzi, B. P. Lanyon, I. Kassal, A. Aspuru-Guzik & A. G. White
    Physical Review Letters 104, 153602 (2010).   
  13. High-fidelity transmission of entanglement over a high-loss free-space channel
    A. Fedrizzi, R. Ursin, T. Herbst, M. Nespoli, R. Prevedel, T. Scheidl, F. Tiefenbacher, T. Jennewein & A. Zeilinger
    Nature Physics 5, 389–392 (2009). 
  14. A wavelength-tunable, fiber-coupled source of narrowband entangled photons
    A. Fedrizzi, T. Herbst, A. Poppe, T. Jennewein & A. Zeilinger
    Optics Express 15, 15377–15386 (2007).
  15. Practical quantum key distribution with polarisation-entangled photons
    A. Poppe, A. Fedrizzi, R. Ursin, H. Böhm, T. Lorünser, O Maurhardt, M. Peev, T. Suda, C. Kurtsiefer, H. Weinfurter, T. Jennewein & A. Zeilinger
    Optics Express 12, 3865 (2004).

Dr Alessandro Fedrizzi joined Heriot-Watt University in September 2015 as an Associate Professor. He currently holds an EPSRC Early Career Quantum Technology Fellowship. Prior to moving to Heriot-Watt he spent seven years—including three on a ARC Discovery Early Career Award—as a research fellow with Andrew White at the University of Queensland, Australia. Dr Fedrizzi completed his PhD in 2008 under the auspices of Anton Zeilinger at the Institute for Quantum Optics and Quantum Information in Vienna.