ELFT HÍRADÓ

[Kormányos Andor <andor.kormanyos AT ttk.elte.hu>]

ELTE TTK Fizikai Intézet / ELTE Institute of Physics


ORTVAY KOLLOKVIUM / ORTVAY COLLOQUIUM
(https://physics.elte.hu/ortvayseminar)


Thursday, 20th April  2023, 15:00h.

Pócza Jenő Classroom,  Physics Building 1.71

Pázmány Péter sétány 1/A, 1117 Budapest.


András Dér

ELKH, Biological Research Center, Szeged

Excursion of a Biophysicist to the Quantum World
  Novel imaging techniques utilizing nondegenerate, correlated photon pairs 
sparked intense interest during the last couple of years among scientists of 
the quantum optics community and beyond. It is a key property of such ‘‘ghost 
imaging’’ or ‘‘quantum interference’’ methods that they use those photons of 
the correlated pairs for imaging that never interacted with the sample, 
allowing detection in a spectral range different from that of the 
illumination of the object. Extensive applications of these techniques in 
spectroscopy and microscopy are envisioned, however, their limited spatial 
resolution to date has not yet supported real-life microscopic investigations 
of tiny biological objects. In the lecture, a modification of the method 
based on quantum interference will be outlined, by using a seeding laser and 
confocal scanning, that allows the improvement of the resolution of imaging 
with undetected photons by more than an order of magnitude. Examples of its 
application in the microscopy of biological samples will also be presented.


The seminar can also be followed via Microsoft Teams:

https://teams.microsoft.com/l/meetup-join/19%3a39af5f577d86493eb72ee6617c57522e%40thread.tacv2/1681469576828?context=%7b%22Tid%22%3a%22b366dbcd-4fc3-4451-82d2-e239564302c3%22%2c%22Oid%22%3a%22560bcc66-85b7-4700-9055-41903a3659ca%22%7d

Please make sure that you switch off your webcam before joining the meeting!


Andor Kormányos
coordinator