Author Archives: wvk_sm9je57j

Our Colloquium for Review of Modern Physics has been accepted!

Colloquium: Atomtronic circuits: From many-body physics to quantum technologies

Rev. Mod. Phys. (Link)

Luigi Amico, Dana Anderson, Malcolm Boshier, Jean-Philippe Brantut, Leong-Chuan Kwek, Anna Minguzzi, and Wolf von Klitzing

Accepted 13 June 2022

ABSTRACT

Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter wave circuits for both fundamental studies in quantum science and technological applications. In this colloquium, we review recent progress in matter-wave circuitry and atomtronics-based quantum technology. After a short introduction to the basic physical principles and the key experimental techniques needed to realize atomtronic systems, we describe the physics of matter-waves in simple circuits such as ring traps and two-terminal systems. The main experimental observations and outstanding questions are discussed. We also present possible applications to a broad range of quantum technologies, from quantum sensing with atom interferometry to future quantum simulation and quantum computation architectures.

Wolf’s colloquium at Laser-Lab Europe is online

Wolf von Klitzing’s colloquium on Matterwave Optics as a Quantum Technology is now available on Youtube.

Quakes

**Station Code:** IACM
**Network Code:** HL
**Site name:** Heraklio
**Latitude:** 35.3058°N
**Longitude:** 25.0709°E
**Elevation:** 45 m

**Station Code:** NPS
**Network Code:** HL
**Site name:** Neapolis
**Latitude:** 35.2613°N
**Longitude:** 25.6103°E
**Elevation:** 288 m

**Station Code:** IDI
**Network Code:** MN/HL
**Site name:** Anogia
**Latitude:** 35.2880°N
**Longitude:** 24.8900°E
**Elevation:** 750 m

**Station Code:** SIVA
**Network Code:** HL
**Site name:** Sivas
**Latitude:** 35.0178°N
**Longitude:** 24.8120°E
**Elevation:** 96 m

**Station Code:** ZKR
**Network Code:** HL/GE
**Site name:** Zakros
**Latitude:** 35.1147°N
**Longitude:** 26.2170°E
**Elevation:** 270 m

Giannis Passes his PhD Viva

Giannis Drougakis passed the viva for his PhD with flying colors !!!

Well done Dr Drougakis !!
🙂

BEC.gr @ Chat Lab

Unfortunately, this year we will again not be able to have a real Researchers’ Night with great experiments for the public. However, there will be a number of online events. Do have a look at researchersnight.gr/chat-lab/, where you can book a chat with Wolf von Klitzing.

GiaSaaS — Our new Space Mission

The GiaSaaS mission to send a Greek satellite into space has just been selected. It will be lead by OHB-Hellas and encompasses a Pan-Greek consortium of companies and universities, including the Libre-Space-Foundation, the National Observatory of Athens, the The Microprocessors Laboratory and Digital Systems Lab of the NTUA, the Greek Center for Security Studies (KEMEA).

Vangelis is going to Cyprus for his PhD

Vangelis Tzardis is has been accepted a the PhD in Frederick University in Cyprus to work on the identification and prediction of brain tumors from MR images.

Congratulations from the BEC team!

ELGAR published in Classical and Quantum Gravity

Our article ‘ELGAR—a European Laboratory for Gravitation and Atom-interferometric Research’ has just appeared in Classical and Quantum Gravity:

ELGAR — a European Laboratory for Gravitation and Atom-interferometric Research

B. Canuel, S. Abend, P. Amaro-Seoane, F. Badaracco, Q. Beaufils, A. Bertoldi, K. Bongs, P. Bouyer, C. Braxmaier, W. Chaibi, N. Christensen, F. Fitzek, G. Flouris, N. Gaaloul, S. Gaffet, C. L. G. Alzar, R. Geiger, S. Guellati-Khelifa, K. Hammerer, J. Harms, J. Hinderer, M. Holynski, J. Junca, S. Katsanevas, C. Klempt, C. Kozanitis, M. Krutzik, A. Landragin, I. L. Roche, B. Leykauf, Y.-H. Lien, S. Loriani, S. Merlet, M. Merzougui, M. Nofrarias, P. Papadakos, F. P. dos Santos, A. Peters, D. Plexousakis, M. Prevedelli, E. M. Rasel, Y. Rogister, S. Rosat, A. Roura, D. O. Sabulsky, V. Schkolnik, D. Schlippert, C. Schubert, L. Sidorenkov, J.-N. Siemß, C. F. Sopuerta, F. Sorrentino, C. Struckmann, G. M. Tino, G. Tsagkatakis, A. Vicere, W. von Klitzing, L. Woerner, and X. Zou

Classical and Quantum Gravity 37 225017 (2020)

https://doi.org/10.1088/1361-6382/aba80e

Apostolos Brimis

08/2020 – today PhD Student on theoretical Optics

Apostolos has joined us in August 2020 to work on the theory of matterwaves and how to use magnetic lenses and RF-fields to produce coherent lenses and mirrors. The final aim is to create nano-scale matter-wave images

PhD/Master Scholarships in Guided Matterwave Interferometry

Project Objectives

In matterwave interferometry, atoms are put into a superposition of two different momentum states. They are then made to travel in two different paths (yes, during part of the interferometry sequence every individual atom is at two distinct places at the same time) before being recombined. Depending on the phase accumulated in the two different paths the atoms end up in two different distinguishable states. The accumulated phase is extremely sensitive to minute entry differences between the two paths travelled, making ultra-sensitive measurements of gravitation, acceleration, or rotation possible. Atoms, however, have the tendency to fall under the influence of earth’s gravitation. This means, that in order to measure at the highest precision, the apparatus has to be very large (some reaching tens or even one hundred of meters in height). The ideal solution would be to contain the atoms in waveguides (much like the optical fibres in optical gyroscopes). Until recently, this has not been possible, because even the smallest roughness in these guides destroys the coherence of the travelling matterwaves.

Our recent contributions

In a recent paper (published in Nature), we have demonstrated for the first time coherent guiding of matterwaves over macroscopic distances. This will make possible, for the first time ever, to perform guided matter-wave spectroscopy over macroscopic distances and in non-trivial geometries. This will greatly enhance the interaction time of the atoms and thus the sensitivity of matterwave interferometers.

PhD Project

The new PhD student will work together with our current Giannis Drougakis on the first guided matterwave interferometry. En route to this he/she will explore the limits on the roughness of waveguides, thus providing invaluable input to the design of any guided matterwave interferometer. The student(s) will work under the supervision of Wolf von Klitzing and Dimitris Papazoglou and be enrolled in the University of Crete