Kolokviji IJS, sreda, 27. 5. 2026, ob 13.00, dr. Anton Potočnik

[Martin Klanjsek]

Vabimo vas na 12. predavanje iz sklopa »Kolokviji na IJS« v akademskem letu 2025/26, ki bo v sredo, 27. maja 2026, ob 13.00 v Veliki predavalnici Instituta »Jožef Stefan« na Jamovi cesti 39 v Ljubljani. Predavanje bo v slovenščini. Na voljo bodo kava, pijača in prigrizki.

 

 

Od laboratorija do industrije: kako zgraditi velike kvantne računalnike?

 

dr. Anton Potočnik

IMEC, Leuven, Belgija

 

 

Področje kvantnih tehnologij je v zadnjih dveh desetletjih doživelo izjemen razvoj. Nedavni napredki so omogočili gradnjo kvantnih računalnikov z več sto kubiti ter demonstracijo kvantnega popravljanja napak. Kljub temu pa pot do praktičnih kvantnih računalnikov z milijoni kubitov še vedno predstavlja velik izziv. V predavanju bom predstavil IMEC-ovo industrijsko platformo za izdelavo superprevodnih kvantnih procesorjev, ki temelji na izdelavi Josephsonovih spojev s prekrivajočo se tehnologijo. Predstavil bom tudi naše nedavne rezultate na področju zmanjševanja mikrovalovnih izgub, ki sicer omejujejo koherenco superprevodnih kvantnih vezij. Nato bom obravnaval najnovejše pristope za krmiljenje in branje kubitov v njihovi neposredni bližini z uporabo nizkotemperaturne klasične elektronike. Omenjeni pristopi predstavljajo pomemben korak k premagovanju ključnih omejitev, ki danes zavirajo razvoj velikih kvantnih računalnikov z milijoni kubitov.

 

O predavatelju: Anton Potočnik je višji raziskovalec v IMEC-u, vodilnem belgijskem raziskovalnem centru za mikro‑ in nanoelektroniko. Pred kratkim je prejel projekt Evropskega raziskovalnega sveta (ERC) za utrditev samostojne raziskovalne poti, in sicer za razvoj razširljivih superprevodnih kvantnih računalnikov z branjem kubitov pri temperaturah blizu absolutne ničle.

 

 

Napovednik predavanja in posnetke preteklih predavanj najdete na spletni strani »Kolokvijev na IJS«  <https://kolokviji.ijs.si/> https://kolokviji.ijs.si/, posnetke pa tudi posebej na  <https://video.arnes.si/?q=Kolokviji_IJS> https://video.arnes.si/?q=Kolokviji_IJS (zadnje štiri sezone) in  <http://videolectures.net/kolokviji_ijs> http://videolectures.net/kolokviji_ijs (starejši).

 

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We invite you to the 12th lecture in the framework of »JSI Colloquia« in the academic year 2025/26, which will take place on Wednesday, May 27, 2026, at 1:00 PM in the main lecture hall of Jožef Stefan Institute, Jamova cesta 39 in Ljubljana. The lecture will be held in Slovenian. Coffee, drinks and snacks will be available.

 

 

>From laboratory to industry: how to build large quantum computers?

 

Dr. Anton Potočnik

IMEC, Leuven, Belgium

 

 

The field of quantum technology has seen remarkable progress over the past two decades. Recent advances have enabled the construction of quantum computers with several hundred qubits and the demonstration of quantum error correction. Nevertheless, the path towards practical quantum computers with millions of qubits remains a major challenge. In this talk, I will present IMEC's industrial platform for fabricating superconducting quantum processors, which is based on overlap Josephson-junction fabrication. I will also discuss our recent results on reducing microwave losses that otherwise limit the coherence of superconducting quantum circuits. Finally, I will outline the latest approaches for controlling and reading out qubits in their immediate vicinity using low-temperature classical electronics. These approaches represent an important step toward overcoming key limitations that currently hinder the development of large-scale quantum computers with millions of qubits.

 

About the lecturer: Anton Potočnik is a senior researcher at IMEC, Belgium's leading research center for micro‑ and nanoelectronics. He recently received a European Research Council (ERC) Consolidator Grant to enable scalable superconducting quantum computers with qubit readout at temperatures near absolute zero.

 

 

The lecture trailer and recordings of past lectures can be found on the website of »JSI colloquia«  <https://kolokviji.ijs.si/> https://kolokviji.ijs.si/, and recordings specifically at  <https://video.arnes.si/en/?q=Kolokviji_IJS> https://video.arnes.si/en/?q=Kolokviji_IJS (last four seasons) and  <http://videolectures.net/kolokviji_ijs> http://videolectures.net/kolokviji_ijs (older).

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