ELFT HÍRADÓ

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

   Dear Colleagues,


the name of the speaker  was a misspelled in the original announcement 
yesterday, apologies for that.


Thursday, 20th June  2024, 15:00h, Pócza Jenő Classroom,  Physics Building 
1.71.

Károly Holczer

Department of Physics and Astronomy, UCLA

Design and construction of a Nitrogen-Vacancy mediated Optical Detection 
Magnetic Resonance (NV-ODMR) Spectrometer, a high density quantum sensor 
platform
Fluorescence detection of an individual Nitrogen-Vacancy center (NV-) in 
diamond enables to identify and locate other spin holding atoms within a ~30 
nanometer radius sphere using Magnetic Double Resonance experiments. A 
plethora of applications based on ingenious experiments have been envisioned 
using individual NV centers as qubit-based quantum sensors. However, to gain 
practical information, these single molecule experiments must be repeated 
millions of times — while scanning over a surface or collecting statistics of 
reversible chemical processes through long time observation — making the 
measurement time unpractically long. An alternative approach is to build a 
measurement platform where 106 – 108 quantum experiments are run parallel on 
less than a cm2 diamond surface, using subsurface NV centers, the longest 
room temperature coherence time qubits.

The long term aim is to create a bio-analytical instruments capable of 
quantitative mapping of the human proteome [1] in personal (home) setting — a 
potential game changer of diagnostics and healthcare. First, I will describe 
the concept of such an instrument and proceed to define the technical 
parameter space for its realization. Then identifying the challenges, I will 
describe the development direction chosen, a combination of an L-band pulsed 
EPR spectrometer with a fluorescence imaging system build around a 100nm thin 
diamond chip, placed in a micro fluidic cell. I will describe the current 
status of the instrument construction and address the remaining design 
challenges.


Az előadás Holczer Károly még egy másik, rövid vitaindító előadást is tartana 
"A tudománymetria szerepe tudomány és az oktatás áruvá válásában" címmel, majd
kötetlen beszélgetés lenne erről a témáról.


Andor Kormányos
coordinator