Imaging with Quantum Entanglement - Christy Simpson

A little late updating the blog.... but the last seminar was given by Christy Simpson, one of the PhD students in the Extreme Light group.  He was talking about our recent work on imaging entangled photons pair using metasurfaces. The talk was based on our arXiv paper which can be found at: https://arxiv.org/abs/1805.01713.

Abstract:
Quantum entanglement is a key resource that can be exploited for a range of applications such
as quantum teleportation, quantum computation and quantum cryptography. However, efforts
to exploit entanglement in imaging systems have so far led to solutions such as ghost imaging,
that have since found classical implementations. Here we demonstrate an optical imaging protocol
that relies uniquely on entanglement: two polarising patterns imprinted and superimposed on a
metasurface are separately imaged only when using entangled photons. Classical light is not able to
distinguish between the two patterns. Entangled single photon imaging of functional metasurfaces
promises advances towards the use of nanostructured subwavelength thin devices in quantum information protocols and a route to efficient quantum state tomography.