Guiding Light Through Scattering Media for Imaging and Cryptography
Event details
| Date | 11.09.2015 |
| Hour | 13:00 |
| Speaker | Prof. Pepijn W. H. Pinkse, University of Twente, Enschede (NL) |
| Location | |
| Category | Conferences - Seminars |
BIOENGINEERING SEMINAR
Abstract:
Disorder in optical media leads to random light scattering and diffusion of light. It has long been considered a nuisance that needs to be avoided. In the Complex Photonic Systems group in Twente, pioneering work has been done to invert the diffusion of light in scattering media [1]. This complex wavefront shaping method uses spatial light modulators to create a focus or an image through a scattering medium. This and related methods are now exploited for imaging through scattering layers [2] and to understand fundamentals of light scattering in multimode fibers [3] and other systems.
In quantum optics, light scattering seems even more undesirable, since quantum states are particularly vulnerable to all kinds of imperfections. However, I will show that complex wavefront shaping can counteract disorder even to the level required for quantum light. By exploiting disorder, photonic quantum networks can be built. Moreover, these disordered systems have intriguing and unexpected applications: they can be used as “physical unclonable function”, unclonable authentication keys that can be read out via Quantum-Secure Authentication [4].
[1] A. P. Mosk, A. Lagendijk, G. Lerosey, and M. Fink, Controlling waves in space and time for imaging and focusing in complex media (Review), Nature Photon. 6, 283-292 (2012)
[2] J. Bertolotti, E. G. van Putten, C. Blum, A. Lagendijk, W. L. Vos, and A. P. Mosk, Non-invasive imaging through opaque scattering layers, Nature 491, 232-234 (2012)
[3] L. V. Amitonova, A. P. Mosk, and P. W. H. Pinkse, The rotational memory effect of a multimode fiber, Opt. Express 23, 20569-20575 (2015)
[4] S. A. Goorden, M. Horstmann, A. P. Mosk, B. Škorić, and P. W. H. Pinkse, Quantum-secure authentication of a physical unclonable key, Optica 1, 421-424 (2014)
Bio:
Pepijn Pinkse did his PhD with Jook Walraven at the University of Amsterdam, the Netherlands, in 1997 on spin-polarized atomic hydrogen. After a brief postdoc at the University of Konstanz, Germany, het spent 10 years at the famous Max-Planck Institute of Quantum Optics near Munich, Germany where he worked on Cavity QED and cooling and trapping of single atoms and cold molecules. In 2009 he switched to the University of Twente, the Netherlands as an Associate Professor and program director of the newly established Strategic Research Orientation “Applied Nanophotonics” in the MESA+ Institute for Nanotechnology at the University of Twente. His present research interests are Nanophotonics and Quantum optics and he leads a group combining these two interests, since 2014 as adjunct professor.
Abstract:
Disorder in optical media leads to random light scattering and diffusion of light. It has long been considered a nuisance that needs to be avoided. In the Complex Photonic Systems group in Twente, pioneering work has been done to invert the diffusion of light in scattering media [1]. This complex wavefront shaping method uses spatial light modulators to create a focus or an image through a scattering medium. This and related methods are now exploited for imaging through scattering layers [2] and to understand fundamentals of light scattering in multimode fibers [3] and other systems.
In quantum optics, light scattering seems even more undesirable, since quantum states are particularly vulnerable to all kinds of imperfections. However, I will show that complex wavefront shaping can counteract disorder even to the level required for quantum light. By exploiting disorder, photonic quantum networks can be built. Moreover, these disordered systems have intriguing and unexpected applications: they can be used as “physical unclonable function”, unclonable authentication keys that can be read out via Quantum-Secure Authentication [4].
[1] A. P. Mosk, A. Lagendijk, G. Lerosey, and M. Fink, Controlling waves in space and time for imaging and focusing in complex media (Review), Nature Photon. 6, 283-292 (2012)
[2] J. Bertolotti, E. G. van Putten, C. Blum, A. Lagendijk, W. L. Vos, and A. P. Mosk, Non-invasive imaging through opaque scattering layers, Nature 491, 232-234 (2012)
[3] L. V. Amitonova, A. P. Mosk, and P. W. H. Pinkse, The rotational memory effect of a multimode fiber, Opt. Express 23, 20569-20575 (2015)
[4] S. A. Goorden, M. Horstmann, A. P. Mosk, B. Škorić, and P. W. H. Pinkse, Quantum-secure authentication of a physical unclonable key, Optica 1, 421-424 (2014)
Bio:
Pepijn Pinkse did his PhD with Jook Walraven at the University of Amsterdam, the Netherlands, in 1997 on spin-polarized atomic hydrogen. After a brief postdoc at the University of Konstanz, Germany, het spent 10 years at the famous Max-Planck Institute of Quantum Optics near Munich, Germany where he worked on Cavity QED and cooling and trapping of single atoms and cold molecules. In 2009 he switched to the University of Twente, the Netherlands as an Associate Professor and program director of the newly established Strategic Research Orientation “Applied Nanophotonics” in the MESA+ Institute for Nanotechnology at the University of Twente. His present research interests are Nanophotonics and Quantum optics and he leads a group combining these two interests, since 2014 as adjunct professor.
Practical information
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- Free