Full-field Coherent Quantum Imaging
Lead Research Organisation:
University of Glasgow
Department Name: School of Physics and Astronomy
Abstract
Quantum entanglement is the invisible non-classical link that can exist between objects separated from each other. Although disputed by Einstein, entanglement is now accepted as a fundamental property of the universe. Light sources exist where photons are emitted as entangled pairs, each photon is ill-defined in direction and energy, but measurement of either gives knowledge of both. If one of the beams of photons is used to illuminate an object, then the image is imprinted onto the other / enabling detection by a remote camera. This is called Quantum or Ghost Imaging, an object placed in one location and be imaged at another! This is all thanks to the coherence of quantum mechanics.Making Ghost Imaging work is a technological challenge, one needs to detect the position of individual photons and distinguish these from any and all sources of noise. To date this has only been possible by raster-scanning single detectors backwards and forwards over the image plane / meaning any Ghost image takes a long time to record. In this work we will develop a real-time Ghost Camera giving live Ghost Images.The system will allow us to explore still disputed questions in the interpretation of Quantum Mechanics including the correct angular form of Heisenberg's uncertainty principle; the pioneering of ghost spectroscopy and explore potential applications in covert imaging, surveillance and sensing.To succeed we will develop a new way of using state of the art photon detectors, computer controlled holograms and short pulse laser sources, while verifying the quantum aspects of our work will require a careful theoretical analysis.
Publications
Boyd R
(2010)
New Twist on Light Beams for Quantum Information Science
in Optics and Photonics News
Chen L
(2010)
High-dimensional quantum nature of ghost angular Young's diffraction
in Physical Review A
Dada A
(2011)
Experimental high-dimensional two-photon entanglement and violations of generalized Bell inequalities
in Nature Physics
Jack B
(2009)
Holographic ghost imaging and the violation of a Bell inequality.
in Physical review letters
Jack B
(2011)
Demonstration of the angular uncertainty principle for single photons
in Journal of Optics
Jack B
(2010)
Entanglement of arbitrary superpositions of modes within two-dimensional orbital angular momentum state spaces
in Physical Review A
Jack B
(2009)
Precise quantum tomography of photon pairs with entangled orbital angular momentum
in New Journal of Physics
Jha AK
(2010)
Angular two-photon interference and angular two-qubit states.
in Physical review letters
Karimi E
(2010)
Spin-orbit hybrid entanglement of photons and quantum contextuality
in Physical Review A
Leach J
(2009)
Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces
in Optics Express
Leach J
(2012)
Quantum correlations in position, momentum, and intermediate bases for a full optical field of view
in Physical Review A
Leach J
(2010)
Quantum correlations in optical angle-orbital angular momentum variables.
in Science (New York, N.Y.)
Romero J
(2010)
Violation of Leggett inequalities in orbital angular momentum subspaces
in New Journal of Physics
Romero J
(2011)
Entangled optical vortex links.
in Physical review letters
Warburton RE
(2011)
Single-photon position to time multiplexing using a fiber array.
in Optics express
Description | see web site and associated papers and press coverage http://www.gla.ac.uk/schools/physics/research/groups/optics/ |
Exploitation Route | see web site and associated papers and press coverage http://www.gla.ac.uk/schools/physics/research/groups/optics/ |
Sectors | Other |
URL | http://www.gla.ac.uk/schools/physics/research/groups/optics/ |
Description | see web site and associated papers and press coverage http://www.gla.ac.uk/schools/physics/research/groups/optics/ |
First Year Of Impact | 2010 |
Sector | Other |
Impact Types | Cultural Economic |