Allgemein - VCQ https://vcq.quantum.at Tue, 23 Apr 2024 09:52:22 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.3 https://vcq.quantum.at/wp-content/uploads/2021/10/cropped-VCQ_SYMBOL-32x32.png Allgemein - VCQ https://vcq.quantum.at 32 32 Summer School 2024 https://vcq.quantum.at/blog/2024/04/19/summer-school-2024/?utm_source=rss&utm_medium=rss&utm_campaign=summer-school-2024 Fri, 19 Apr 2024 10:08:11 +0000 https://vcq.quantum.at/?p=15289 We are glad to present the   VCQ & TURIS Summer School 2024   VIENNA, 02.09. – 06.09.2024 Hörsaalzentrum, Altes AKH   more information   Confirmed speakers: Sougato Bose Testing Gravity with Entanglement Clare Burrage Beyond the Standard Model Gia Dvali How to Test for Quantum Gravity​ The clash of General Relativity and Quantum Information […]

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VCQ&TURIS Summer School 2024
We are glad to present the

 

VCQ & TURIS Summer School 2024

 

VIENNA, 02.09. – 06.09.2024

Hörsaalzentrum, Altes AKH

 

more information

 

Confirmed speakers:

Sougato Bose
Testing Gravity with Entanglement
Clare Burrage
Beyond the Standard Model
Gia Dvali
How to Test for Quantum Gravity​
The clash of General Relativity and Quantum Information
Nick Hugget
Philosophy and Quantum Gravity
Eduardo Martin-Martinez
Concepts of General Relativity
Tracy Northup
Experimental Quantum Information
Christopher Overstreet
Testing Gravity with Atoms
Anna Sanpera
Concepts of Quantum Information
Hendrik Ulbricht
Testing Gravity with Optomechanics
 

 

 
 
 

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]]> World Quantum Day 2024 https://vcq.quantum.at/blog/2024/04/15/world-quantum-day-2024/?utm_source=rss&utm_medium=rss&utm_campaign=world-quantum-day-2024 Mon, 15 Apr 2024 11:27:27 +0000 https://vcq.quantum.at/?p=15273 “Wir können Quanten verstehen, aber nicht begreifen” (Markus Arndt, Universität Wien)  Why April 14th?  The World Quantum Day is celebrated on April 14, a reference to 4.14, the rounded first digits of Planck’s constant: 4.135667696×10−15 eV.s = 0,000 000 000 000 004 135667696 electronvolt second, a product of energy and time that is the fundamental […]

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“Wir können Quanten verstehen, aber nicht begreifen”

(Markus Arndt, Universität Wien)
 

Why April 14th? 

The World Quantum Day is celebrated on April 14, a reference to 4.14, the rounded first digits of Planck’s constant: 4.135667696×10−15 eV.s = 0,000 000 000 000 004 135667696 electronvolt second, a product of energy and time that is the fundamental constant governing quantum physics. Why is Planck’s constant so important? Did you know it is used to define the kilogram? And, otherwise, how does it affect our lives? These are some of the questions, among many others, that will be addressed by the World Quantum Day activities.

Join us for a celebration of Quantum Science and Technology in Austria, featured by our groups from the VCQ and quant A

 
https://vcq.quantum.at/world-quantum-day-2024/

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]]> MONDAY, 25 MARCH 2024, VCQ COLLOQUIUM TALK BY DRIES SELS https://vcq.quantum.at/blog/2024/03/14/monday-25-march-2024-vcq-colloquium-talk-by-dries-sels/?utm_source=rss&utm_medium=rss&utm_campaign=monday-25-march-2024-vcq-colloquium-talk-by-dries-sels Thu, 14 Mar 2024 11:39:36 +0000 https://vcq.quantum.at/?p=15012 Bethe-Peierls approximation in the era of quantum computers   Tensor networks have been foundational tools in our understanding of many-body physics ofone-dimensional systems. In this talk I will discuss efforts to move away from onedimensionaltensor networks towards networks of arbitrary structures. I will discuss how wellestablished tools from statistical mechanics have propelled recent algorithmic advances […]

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Dries Sels

Bethe-Peierls approximation in the era of quantum computers

 

Tensor networks have been foundational tools in our understanding of many-body physics of
one-dimensional systems. In this talk I will discuss efforts to move away from onedimensional
tensor networks towards networks of arbitrary structures. I will discuss how well
established tools from statistical mechanics have propelled recent algorithmic advances and
how these tools have been employed to efficiently simulate recent large scale quantum
computations.

 

Monday, 25 March 2024
at Helmut Rauch Lecture Hall
Atominstitut Wien, Stadionallee 2, 1020 Vienna

17:00 Get-together with coffee and snacks!
17:30 VCQ Student talk
17:45 VCQ Colloquium Talk

Host: Julian Leonard

 

Join Zoom Meeting
https://tuwien.zoom.us/j/66258063266?pwd=SEx3aG9TRmloNStxUGxZUkRwR3hxQT09

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]]> MONDAY, 29 JANUARY 2024, VCQ COLLOQUIUM TALK BY RACHEL GRANGE https://vcq.quantum.at/blog/2024/01/23/elementor-14595/?utm_source=rss&utm_medium=rss&utm_campaign=elementor-14595 Tue, 23 Jan 2024 11:18:09 +0000 https://vcq.quantum.at/?p=14595 Lithium niobate on Insulator and Beyond: Overcoming Fabrication Challenges for Integrated and Flat Photonics Nonlinear and electro-optic devices are present in our daily life with many applications: light sources for microsurgery, green laser pointers, or modulators for telecommunication. Most of them use bulk materials such as glass fibers or high-quality crystals, hardly integrable or scalable. […]

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Lithium niobate on Insulator and Beyond:
Overcoming Fabrication Challenges for Integrated and Flat Photonics

 

Nonlinear and electro-optic devices are present in our daily life with many applications: light sources for microsurgery, green laser pointers, or modulators for telecommunication. Most of them use bulk materials such as glass fibers or high-quality crystals, hardly integrable or scalable. Even the fast developments of thin film lithium niobate face the challenging etching of metal-oxides. Therefore, the quest for a non-centrosymmetric material system, easy to fabricate and to scale up while maintaining its functionality is still ongoing. Here I will present our recent advances in top-down fabrication of lithium niobate devices and bottom-up assemblies of randomly oriented nanocrystals or sol-gel to produce nonlinear classical and quantum signals.

 

Monday, 29 January 2024
at Lise Meitner Lecture Hall at Universität Wien Boltzmanngasse 5, 1090 Vienna, 1. OG

17:00 VCQ Student Talk by Oliver Diekmann
Two atoms in a fish-eye lens playing pingpong with a single photon

17:15 VCQ Colloquium talk by Rachel Grange

Host: Stefan Rotter

***There will be drinks & snacks after the talk!***
Zoom link: https://vcq.quantum.at/colloquium-ws-23-24/

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]]> MONDAY, 15 JANUARY 2024, COLLOQUIUM TALK by Eleni Diamanti https://vcq.quantum.at/blog/2024/01/12/elementor-14512/?utm_source=rss&utm_medium=rss&utm_campaign=elementor-14512 Fri, 12 Jan 2024 09:07:37 +0000 https://vcq.quantum.at/?p=14512 COLLOQUIUM TALK by Eleni Diamanti (CNRS, Sorbonne University Paris) Secure communications in quantum networks Quantum technologies have the potential to improve in an unprecedented way the security and efficiency of communications in network infrastructures. We discuss the current landscape in quantum communication and cryptography, and focus in particular on recent photonic implementations, using encoding in […]

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COLLOQUIUM TALK

by

Eleni Diamanti

(CNRS, Sorbonne University Paris)

 

Secure communications in quantum networks

 

Quantum technologies have the potential to improve in an unprecedented way the security and efficiency of communications in network infrastructures. We discuss the current landscape in quantum communication and cryptography, and focus in particular on recent photonic implementations, using encoding in discrete or continuous properties of light, of central quantum network protocols, enabling secret key distribution, verification of multiparty entanglement and transactions of quantum money, with security guarantees impossible to achieve with only classical resources. We also describe current challenges in this field and our efforts towards the miniaturization of the developed photonic systems, their integration into telecommunication network infrastructures, including with satellite links, as well as the practical demonstration of novel protocols featuring a quantum advantage for a wide range of tasks. These advances enrich the resources and applications of the emerging quantum networks that will play a central role in the context of future global-scale quantum-safe communications.

Monday, 15 January 2024
at Lise Meitner Lecture Hall at Universität Wien Boltzmanngasse 5, 1090 Vienna, 1. OG

17:00 VCQ Student Talk by Joshua Morris
Planar search: Heuristic solver for rank constrained semidefinite programs

17:15 VCQ Colloquium talk by Eleni Diamanti

Host: Borivoje Dakić

***There will be drinks and snacks after the talk!***

Zoom link: https://vcq.quantum.at/colloquium-ws-23-24/

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]]> MONDAY, 4 DECEMBER 2023, COLLOQUIUM by Ido Kaminer – Punsch&Maroni after the talk https://vcq.quantum.at/blog/2023/11/30/monday-4-december-2023-colloquium-by-ido-kaminer-punschmaroni-after-the-talk/?utm_source=rss&utm_medium=rss&utm_campaign=monday-4-december-2023-colloquium-by-ido-kaminer-punschmaroni-after-the-talk Thu, 30 Nov 2023 11:52:57 +0000 https://vcq.quantum.at/?p=14330 The Vienna Center for Quantum Science and Technology (VCQ) invites you to a COLLOQUIUM TALK by Ido Kaminer (Israel Institute of Technology) Free-Electron Quantum Optics Until recently, work in quantum optics focused on light interacting with bound-electron systems such as atoms, quantum dots, and nonlinear optical crystals. In contrast, free-electron systems enable fundamentally different physical […]

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The Vienna Center for Quantum Science and Technology (VCQ)

invites you to a

COLLOQUIUM TALK

by

Ido Kaminer

(Israel Institute of Technology)

Free-Electron Quantum Optics

Until recently, work in quantum optics focused on light interacting with bound-electron systems such as atoms, quantum dots, and nonlinear optical crystals. In contrast, free-electron systems enable fundamentally different physical phenomena, as their energy distribution is continuous and not discrete, allowing for tunable transitions and selection rules.

Recent theoretical and experimental breakthroughs involving quantum interactions of free electrons spawned an exciting new field: free-electron quantum optics. We developed a platform for exploring free-electron quantum optics at the nanoscale, based on a laser-driven transmission electron microscope. We used this platform to demonstrate the first coherent interaction of a free electron with a photonic cavity and with the quantum statistics of photons.

These capabilities open new paths toward using free electrons as carriers of quantum information. Free electrons emerge as quantum optical sources for desired photonics states used in fault-tolerant quantum computation and communication such as Schrodinger cat states and Gottesman-Kitaev-Preskill (GKP) states.

Concepts of quantum optics with free electrons also promote new modalities in electron microscopy. We demonstrated the first instance of coherent amplification in electron microscopy. Our vision is to develop a microscope that can image coherence, going beyond conventional imaging of matter to also image the coherent quantum state of matter and probe quantum correlations between individual quantum systems.

Monday, 04 December 2023

at Lise Meitner Lecture Hall at Universität Wien
Boltzmanngasse 5, 1090 Vienna, 1. OG

17:00 VCQ Student talk by Alexander Preimesberger

Investigating Correlated Electron-Photon Pairs in a Transmission Electron Microscope

17:15 VCQ Colloquium talk by Ido Kaminer

Host: Philipp Haslinger

***There will be ‘Punsch&Maroni’ after the talk!***

Zoom link: https://vcq.quantum.at/colloquium-ws-23-24/

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]]> Monday, 27 November 2023, VCQ COLLOQUIUM TALK by Wolfram Pernice https://vcq.quantum.at/blog/2023/11/21/monday-27-november-2023-vcq-colloquium-talk-by-wolfram-pernice/?utm_source=rss&utm_medium=rss&utm_campaign=monday-27-november-2023-vcq-colloquium-talk-by-wolfram-pernice Tue, 21 Nov 2023 11:44:23 +0000 https://vcq.quantum.at/?p=14166 The Vienna Center for Quantum Science and Technology VCQ   invites you to aCOLLOQUIUM TALKbyWolfram Pernice(Heidelberg University | Westfälische Wilhelms-Universität Münster)     Photonic in-memory computingConventional computers are organized around a centralized processing architecture, which is well suited to running sequential, procedure-based programs. Such an architecture is inefficient for computational models that are distributed, massively […]

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The Vienna Center for Quantum Science and Technology VCQ

 

invites you to a
COLLOQUIUM TALK
by
Wolfram Pernice
(Heidelberg University | Westfälische Wilhelms-Universität Münster)

 

 

Photonic in-memory computing
Conventional computers are organized around a centralized processing architecture, which is well suited to running sequential, procedure-based programs. Such an architecture is inefficient for computational models that are distributed, massively parallel and adaptive, most notably those used for neural networks in artificial intelligence. In these application domains demand for high throughput, low latency and low energy consumption is driving the development of not only new architectures, but also new platforms for information processing.
Photonic circuits are emerging as one promising candidate platform and allow for realizing the underlying computing architectures, which process optical signals in analogy to electronic integrated circuits. Therein electrical connections are replaced with photonic waveguides which guide light to desired locations on chip. Through heterogeneous integration, photonic circuits, which are normally passive in their response, are able to display active functionality and thus provide the means to build neuromorphic systems capable of learning and adaptation. In reconfigurable photonic architectures in-memory computing allows for overcoming separation between memory and central processing unit as a route for designing artificial neural networks, which operate entirely in the optical domain.
Heidelberg University, Im Neuenheimer Feld 227, 69120 Heideberg, Germany

 

Monday, 27 November 2023
at Lise Meitner Lecture Hall at Universität Wien Boltzmanngasse 5, 1090 Vienna, 1. OG

 

17:00 VCQ Student Talk by Nicolás Medina Sánchez
Reconstruction of Quantum Particle Statistics: Bosons, Fermions, and Transtatistics

 

17:15 VCQ Colloquium talk by Wolfram Pernice

 

There will be drinks & snacks after the talk.

 

Host: Philip Walther

 

for further information and the zoom-link please visit https://vcq.quantum.at/colloquium-ws-23-24/

 

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]]> Monday, 06 November 2023, VCQ COLLOQUIUM TALK by Philippe Grangier https://vcq.quantum.at/blog/2023/11/21/monday-06-november-2023-vcq-colloquium-talk-by-philippe-grangier/?utm_source=rss&utm_medium=rss&utm_campaign=monday-06-november-2023-vcq-colloquium-talk-by-philippe-grangier Tue, 21 Nov 2023 10:38:03 +0000 https://vcq.quantum.at/?p=13872 Vienna Center for Quantum Science and Technology (VCQ) invites you to aCOLLOQUIUM TALKby Philippe Grangier(Institut d’Optique Graduate School, CNRS, Université Paris-Saclay) Experimental tests of Bell’s inequalities at Institut d’Optique (1980-82): past achievements and future directions We will review the motivations and history of the experiments that lead to the Nobel Prize in Physics 2022, attributed […]

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Vienna Center for Quantum Science and Technology (VCQ) invites you to a
COLLOQUIUM TALK
by

Philippe Grangier
(Institut d’Optique Graduate School, CNRS, Université Paris-Saclay)

Experimental tests of Bell’s inequalities at Institut d’Optique (1980-82): past achievements and future directions

We will review the motivations and history of the experiments that lead to the Nobel Prize in Physics 2022, attributed to Alain Aspect, John Clauser and Anton Zeilinger. We will then discuss some future perpectives, both on the side of quantum technologies, and on the side of the more philosophical issues that motivated initially these experiments.

Monday, 06 November 2023
at Lise Meitner Lecture Hall at Universität Wien Boltzmanngasse 5, 1090 Vienna, 1. OG

17:00 VCQ Student Talk by Martin Renner
Simulating qubit correlations with classical communication
17:15 VCQ Colloquium talk by Prof. Grangier

There will be drinks & snacks after the talk.

Host: Anton Zeilinger
Borivoje Dakić

For further information and the zoom-link please visit https://vcq.quantum.at/colloquium-ws-23-24F

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]]> Monday, 9 October 2023, Quantum Tech Session https://vcq.quantum.at/blog/2023/10/03/quantum-tech-session/?utm_source=rss&utm_medium=rss&utm_campaign=quantum-tech-session Tue, 03 Oct 2023 08:05:06 +0000 https://vcq.quantum.at/?p=13488 The Quantum Tech Session will be organized by the Vienna Center for Quantum Science and Technology (VCQ) on October 9th (14:00-17:00). The primary purpose of this event is to provide valuable insights to researchers, particularly Ph.D. students and postdocs, regarding opportunities related to quantum technology transfer, initiating start-ups, and pursuing careers in the industry. We […]

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]]> The Quantum Tech Session will be organized by the Vienna Center for Quantum Science and Technology (VCQ) on October 9th (14:00-17:00).

The primary purpose of this event is to provide valuable insights to researchers, particularly Ph.D. students and postdocs, regarding opportunities related to quantum technology transfer, initiating start-ups, and pursuing careers in the industry. We will feature presentations by successful quantum start-ups that originated from our academic environment. Of particular interest is the presentation of Quantum Innovation Lab, a joint initiative by the Cluster of Excellence QuantA, VCQ, and the University of Vienna. This initiative aims to support researchers with training programs and resources to develop new spin-offs.

Please register until 5 October 2023: anna.maszl-kantner@univie.ac.at

AGENDA

Presentation of Quantum Innovation Lab (https://entrepreneurship.univie.ac.at/innovation-labs/) by Marco Masia, FSNF, University of Vienna

Presentations by:

Valentin Stauber, Quantum Algorithm Developer, ParityCQ (https://parityqc.com/)

Martin Bohmann, Business Developer, QTlabs (https://www.qtlabs.at/)

Fritz Diorico, CEO Tulon Photonics (www.tulonphotonics.com)      

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