Picture of David Bitauld

David Bitauld

Cambridge, UK
Principal Researcher


PhD in Optics from Telecom ParisTech / Paris-Sud University

MSc in Physics from INSA Rennes and University of Rennes I


I joined Nokia in 2012 where I have been developing technologies for Quantum Communication and Privacy-Preserving Computing Systems. Since January 2016 I am with Bell Labs where I am applying photonic technologies to enable non-invasive biosensing.

Research Interests

  • Biological Communications
  • Materials Science
  • Nanotechnology
  • Optical Communication
  • Optical Devices
  • Privacy
  • Quantum Computing & Communications

Selected Articles and Publications

Hyunchae Chun, Iris Choi, Grahame Faulkner, Larry Clarke, Bryan Barber, Glenn George, Colin Capon, Antti Niskanen, Joachim Wabnig, Dominic O’Brien, and David Bitauld, "Handheld free space quantum key distribution with dynamic motion compensation," Opt. Express 25, 6784-6795 (2017)

David Bitauld, Simon Osborne, and Stephen O’Brien, "Timing characterization of 100 GHz passively mode-locked discrete mode laser diodes," Opt. Express 19, 13989-13999 (2011)

David Bitauld, Francesco Marsili, Alessandro Gaggero, Francesco Mattioli, Roberto Leoni, Saeedeh Jahanmiri Nejad, Francis Lévy, and Andrea Fiore, "Nanoscale Optical Detector with Single-Photon and Multiphoton Sensitivity", Nano Letters 2010 10 (8), 2977-2981

Aleksander Divochiy, Francesco Marsili, David Bitauld, Alessandro Gaggero, Roberto Leoni, Francesco Mattioli, Alexander Korneev, Vitaliy Seleznev, Nataliya Kaurova, Olga Minaeva, Gregory Gol'Tsman, Konstantinos G Lagoudakis, Moushab Benkhaoul, Francis Levy, Andrea Fiore, "Superconducting nanowire photon-number-resolving detector at telecommunication wavelengths", Nature Photonics 2, 302–306 (2008)

D Bitauld, L Menez, I Zaquine, A Maruani, R Frey, "Diffraction of Gaussian beams on intracavity Bragg gratings",JOSA B, 2005


Quantum key distribution, J Wabnig, A Niskanen, H Li, D Bitauld
US Patent 9,794,065

Free space communication, H Li, D Bitauld
US Patent App. 15/508,061

Directional optical communications, D Bitauld
US Patent 9,692,508

Secured wireless communications, J Wabnig, A Niskanen, H Li, D Bitauld
US Patent 9,641,326

Fiber-based communication, D Bitauld, J Wabnig, A Niskanen, H Li
US Patent App. 15/316,869

Polarization rotator-combiner for optical communications, D Bitauld
US Patent App. 15/306,191

Method and apparatus for quantum cryptography, D Bitauld, A Niskanen
US Patent App. 15/101,509

Reception and generation of light, D Bitauld
US Patent App. 15/112,571

Free-space optical communications for mobile devices, H Li, D Bitauld, A Niskanen
US Patent App. 15/110,175

Optical beams, D Bitauld, A Niskanen
US Patent App. 14/907,665

Secured Wireless Communications, J Wabnig, A Niskanen, H Li, D Bitauld
US Patent App. 15/090,851

Alignment of optical devices, J Wabnig, A Niskanen, H Li, D Bitauld
US Patent App. 14/890,219

Optical link establishment, J Wabnig, A Niskanen, H Li, D Bitauld

Apparatus and a method, A Niskanen, D Bitauld
US Patent 9,118,413