QuantumFrontiers Newsletter #15 (Aug 2023)

Alexander von Humboldt Professorship for Braunschweig
Daniel Prades, an expert for nanophotonics, receives Germany’s highest-doted research award with five million euros. As an established top researcher, he will further strengthen Braunschweig as a centre of science from 2024 onwards and in particular provide new impetus for the region’s strong research on nano and quantum sensors.

Save the Date: QuantumFrontiers Days 2024
Mark your calendar right now: The next QuantumFrontiers Days will take place on 27 and 28 May 2024.

QuantumVR receives award
QuantumVR offers a playful introduction to the world of quantum programming. For this purpose, the game was designed in an escape room style, in which locked-up animals are freed by solving puzzles. At the Comenius EduMedia Awards it now was awarded in the category "Computer games with competence-promoting potential".

GRACE-FO satellite model travels through Germany on the MS Wissenschaft
The MS Wissenschaft is a converted cargo ship and now a floating science centre. This year, it is anchoring in numerous cities in Germany and Austria until the end of September with Universe exhibition.

MasterClasses at the Smart City Days
2023 the Smart City Days took place for the second time in Hannover. Around 1,000 pupils visited workshops, exhibitions, hands-on activities and a stage programme - including an introduction to quantum computing from the QuantumFrontiers MasterClasses team

Quantum sensors on the road to application
With unprecedented precision, quantum sensors are viewed as a technological leap for biomedicine. Scientists from Harvard University (USA) and QuantumFrontiers-scientists from TU Braunschweig jointly compiled an overview of various quantum sensors and how they can be used.

Girls' Day 2023 at QuantumFrontiers
This year, a total of 35 schoolgirls and schoolboys at the TU Braunschweig and Leibniz Universität Hannover gained an insight into the work of modern physics research institutes as part of Girls' Day.

Braunschweig’s microelectronics on the rise
With no less than four new successful project ideas, the nstitute for CMOS Design under Professor Vadim Issakov is currently making a name for itself as one of the top locations for the subject in Germany.

Modern experiments for modern physics lessons
In the latest revision, the topic of quantum technology was given space in Lower Saxony's new physics curriculum for the first time. Scientists from QuantumFrontiers are now working on establishing an experiment set on interferometry with the Michelson interferometer as well as analogy experiments with the quantum eraser and BB84 key generation.

Research Highlights

Despite doubts from quantum physicists: Einstein's theory of relativity reaffirmed
Research team from ZARM Bremen and Leibniz University Hannover confirms another equivalence principle. It published their findings as a highlights article in the scientific journal "Physical Review Letters".

Electron collider on a chip
Quantum electronics promises significant advances in ultra-sensitive measurements and quantum information processing. In nanoelectronic circuits, one electron can be used to precisely modify the trajectory of another electron through their mutual Coulomb interaction. This new fundamental circuit element has now been demonstrated by three independent research teams, whose complementary discoveries have been published in the journal Nature Nanotechnology.

Dark matter remains “dark”
Can dark matter interact with photons and influence atomic structure? A case for optical atomic clocks: Two different types of such clocks were compared at the Physikalisch-Technische Bundesanstalt (PTB). It is the most accurate search for an interaction of ultralight dark matter with photons to date.

Do you have a research highlight you'd like to add to the QF Website and announce in the Newsletter? Please contact office@quantumfrontiers.uni-hannover.de. 

Awards

Heinz Maier-Leibnitz Prize for Elina Fuchs
Leader of the TopicalGroup "Tests of Fundamental Physics: Spectroscopy" receives Germany's most important award for researchers in the early stages of their careers.

Leon Karpa receives Heisenberg fellowship
Leon Karpa from the Institute of Quantum Optics is one of 26 scientists to receive funding from the DFG's Heisenberg Programme. It enables researchers to continue their own high-profile projects at a location of their choice and to further enhance their scientific reputation, thus preparing them for a scientific leadership position within up to five years.

Vening Meinesz Medal for Jürgen Müller
The award honours his scientific leadership in the field of Lunar Laser Ranging and the test of general relativity as well as his contributions to advancing the field of geodesy especially in the use of quantum technology for novel applications and measurement concepts.

Recent publications

Amaro, D., Lämmerzahl, C. and Macías, A.
Particle motion in the Einstein-Euler-Heisenberg rotating black hole spacetime
Physical Review D 107(8) (2023)

Astrakharchik, G.E., Ardila, L.A.P., Jachymski, K. and Negretti, A.    
Many-body bound states and induced interactions of charged impurities in a bosonic bath
Nature Communications 14(1) (2023)

Bahamonde, S., Dialektopoulos, K.F., Hohmann, M., Said, J.L., Pfeifer, C. and Saridakis, E.N.
Perturbations in non-flat cosmology for f(T) gravity
The European Physical Journal C 83(3) (2023)

Bahamonde, S., Doneva, D.D., Ducobu, L., Pfeifer, C. and Yazadjiev, S.S.
Spontaneous scalarization of black holes in Gauss-Bonnet teleparallel gravity
Physical Review D 107(10) (2023)

Barzel, R. and Lämmerzahl, C.
Role of indistinguishability and entanglement in Hong-Ou-Mandel interference and finite-bandwidth effects of frequency-entangled photons
Physical Review A 107(3) (2023)

Behren, B.v., Heinze, J., Bode, N. and Willke, B.
High-power laser beam in higher-order Hermite–Gaussian modes
Applied Physics Letters  122(19) (2023)

Breton, N., Lämmerzahl, C. and Macías, A.
Type-D solutions of the Einstein-Euler-Heisenberg nonlinear electrodynamics with a cosmological constant
Physical Review D 107(6) (2023)

Cheraghchi, S., Pfeifer, C. and Voicu, N.
Four-dimensional SO(3)-spherically symmetric Berwald Finsler spaces
International Journal of Geometric Methods in Modern Physics (2023)

Christinck, J., Hirt, F., Hofer, H., Liu, Z., Etzkorn, M., Dunatov, T., Jakšić, M., Forneris, J. and Kück, S.
Bright single-photon emission from a GeV center in diamond under a microfabricated solid immersion lens at room temperature
Journal of Applied Physics 133(19) (2023)

Dickmann, J., Neto, L.s., Gaedtke, M. and Kroker, S.
Levitating the noise performance of ultra-stable laser cavities assisted by a deep neural network: the non-intuitive role of the mirrors
OPTICS EXPRESS 31(10), pp. 15953-15965 (2023)

Guckel, J., Görke, M., Garnweitner, G. and Park, D.
Smart Iterative Analysis Tool for the Size Distribution of Spherical Nanoparticles
Microscopy and Microanalysis (2023)

Hartig, M.-S., Schuster, S., Heinzel, G. and Wanner, G.
Non-geometric tilt-to-length coupling in precision interferometry: mechanisms and analytical descriptions
Journal of Optics  25(5), pp. 055601 (2023)

Jin, J., Bekker, H., Kirschbaum, T., Litvinov, Y.A., Pálffy, A., Sommerfeldt, J., Surzhykov, A., Thirolf, P.G. and Budker, D.
Excitation and probing of low-energy nuclear states at high-energy storage rings
Physical Review Research 5(2) (2023)

Jones, B.D.M., Uola, R., Cope, T., Ioannou, M., Designolle, S., Sekatski, P. and Brunner, N.
Equivalence between simulability of high-dimensional measurements and high-dimensional steering
Physical Review A 107(5) (2023)

Jürss, T., Grosche, G. and Koke, S.
Free-space interferometer design for optical frequency dissemination and out-of-loop characterization below the 10⁻²¹-level
Photonics Research 11(6), pp. 1113 (2023)

Kadum, J.E., Ji, J., Kuhl, A., Misera, M., Waterholter, T. and Koke, S.
Optical frequency transfer with below 10−21 uncertainty using a DFB–laser-based fiber Brillouin amplifier
APL Photonics 8(3), pp. 036113 (2023)

Kulosa, A.P., Prudnikov, O.N., Vadlejch, D., Fürst, H.A., Kirpichnikova, A.A., Taichenachev, A.V., Yudin, V.I. and Mehlstäubler, T.E.
Systematic study of tunable laser cooling for trapped-ion experiments
New Journal of Physics  25(5), pp. 053008 (2023)

Läänemets, D., Hohmann, M. and Pfeifer, C.
Observables from spherically symmetric modified dispersion relations
International Journal of Geometric Methods in Modern Physics 19(10)   (2022)

Misfeldt, M., Bekal, P., Müller, V. and Heinzel, G.
Disturbances from Single Event Upsets in the GRACE Follow-On Laser Ranging Interferometer
Advances in Space Research (2023)

Pavlovska, E., Silvestrov, P.G., Recher, P., Barinovs, G. and Kashcheyevs, V.
Collision of two interacting electrons on a mesoscopic beam splitter: Exact solution in the classical limit
Physical Review B  107(16)  (2023)

Peshkov, A.A., Jordan, E., Kromrey, M., Mehta, K.K., Mehlstäubler, T.E. and Surzhykov, A.
Excitation of Forbidden Electronic Transitions in Atoms by Hermite–Gaussian Modes
Annalen der Physik (2023)

Peters, L., Spende, H., Wolter, S., Margenfeld, C., Ronning, C., Voss, T. and Waag, A.
A Combination of Ion Implantation and High‐Temperature Annealing: Donor–Acceptor Pairs in Carbon‐Implanted AlN
physica status solidi (a)  (2023)

Pür, C., Hetzel, M., Quensen, M., Hüper, A., Geng, J., Kruse, J., Ertmer, W. and Klempt, C.
Rapid generation and number-resolved detection of spinor rubidium Bose-Einstein condensates
Physical Review A 107(3) (2023)

Puttock, R., Barton, C., Saugar, E., Klapetek, P., Fernández-Scarioni, A., Freitas, P., Schumacher, H.W., Ostler, T., Chubykalo-Fesenko, O. and Kazakova, O.
Local thermoelectric response from a single Néel domain wall
Science Advances 8(47) (2022)

Ritter, P.J., Stapelfeldt, F.-N., Tollkühn, M., Hanisch, D., Pröpper, M., Schilling, M. and Hampel, B.
Antenna Designs for Efficient Coupling to Josephson Junctions for THz Microscopy
IEEE Transactions on Applied Superconductivity 33(5), pp. 1–5  (2023)

Sauter, E., Abrosimov, N.V., Hübner, J. and Oestreich, M.
Temperature dependence of the band gap of 28Si:P at very low temperatures measured via time-resolved optical spectroscopy
Physical Review Research  5(1)  (2023)

Singh, V.V., Müller, J., Biskupek, L., Hackmann, E. and Lämmerzahl, C.
Equivalence of Active and Passive Gravitational Mass Tested with Lunar Laser Ranging
Physical Review Letters  131(2)  (2023)

Spengler, F., Belenchia, A., Rätzel, D. and Braun, D.
Optical solitons in curved spacetime
Classical and Quantum Gravity  40(14), pp. 145008 (2023)

Tuz, V.R., Prokhorov, A.V., Shesterikov, A.V., Volkov, V.S., Chichkov, B.N. and Evlyukhin, A.B.
Magnetic‐Electric Metamirror and Polarizing Beam Splitter Composed of Anisotropic Nanoparticles
Annalen der Physik (2023)

Ubbelohde, N., Freise, L., Pavlovska, E., Silvestrov, P.G., Recher, P., Kokainis, M., Barinovs, G., Hohls, F., Weimann, T., Pierz, K. and Kashcheyevs, V.
Two electrons interacting at a mesoscopic beam splitter
Nature Nanotechnology (2023)

Voicu, N., Friedl-Szász, A., Popovici-Popescu, E. and Pfeifer, C.
The Finsler Spacetime Condition for (α,β)-Metrics and Their Isometries
Universe  9(4), pp. 198  (2023)

Voigt, C., Sulzbach, R., Timmen, L., Dobslaw, H., Weise, A., Deng, Z., Stolarczuk, N., Pflug, H., Peters, H., Fietz, M., Thomas, M., Förste, C. and Flechtner, F.
A superconducting gravimeter on the island of Heligoland for the high-accuracy determination of regional ocean tide loading signals of the North Sea
Geophysical Journal International  234(3), pp. 1585–1602 (2023)

Yin, Y., Chatterjee, A., Momeni, D., Kruskopf, M., Götz, M., Wundrack, S., Hohls, F., Pierz, K. and Schumacher, H.W.
Tailoring Permanent Charge Carrier Densities in Epitaxial Graphene on SiC by Functionalization with F4‐TCNQ
Advanced Physics Research 1(1), pp. 2200015 (2022)

Funding opportunities

Internal: New round of Flexible Fund proposals
The next meeting of the Science Board will tale place on Sep 19th. The new deadlines for Flexible Funds proposals are:
Proposals > 50.000€: Monday, 29.08.2023
Proposals < 50.000€: Monday, 05.09.2023 

IMPORTANT: Please remember that a Flexible Fund proposal must be assigned to a Research Unit or a Topical Group for submission. The respective Unit/Group leader will act as rapporteur in case the proposal amounts to more than 50k€. If your proposals affect several Units/Groups, please choose your primary one. Refer to our wiki for guidelines and templates.

Scientific Events

DQ-mat Summer School - Quantum States of Matter
20-25 Aug 2023, Hannover (Germany)

Particle & AMO physicists discussing quantum sensors and new physics
28 Aug-08 Sep 2023, Munich (Germany)

Frontiers of near-term quantum computing
29 Aug-01 Sep 2023, Gothenburg (Sweden)

Workshop on Long-Range Interactions in the Quantum
05-08 Sep 2023, San Sebastian (Spain)

Quantum, Atomic and Molecular Physics (QuAMP 2023)
11-13 Sep 2023, Glasgow (UK)

European Conference on Trapped Ions (ECTI 2023)
25-29 Sep 2023 Bückeburg (Germany)

Frontiers of Quantum Metrology: Fundamental Physics, Unexpected Connections, and Novel Applications
09-12 Oct 2023, Santa Barbara (USA)

Summer School on Frequency Standards, Precision and Quantum Measurement
09-13 Oct 2023, Gold Coast, QLD (Australia)

European Quantum Technologies Conference (EQTC)
16-20 Oct 2023, Hannover (Germany)

9th Symposium on Frequency Standards and Metrology
16-20 Oct 2023, Kingscliff, NSW (Australia)

Winter School on Physics with Trapped Charged Particles
15-26 Jan 2024, Les Houches (France)

QuantumFrontiers Days 2024
27-28 May 2024, Hannover (Germany)

Open Positions

Two Doctoral or PostDoctoral Researcher at LUHs Institut für Erdmessung (IfE)
 - on Quantum Inertialnavigation for LEO-PNT
 - on Quantum Inertialnavigation for Earth-Moon Navigation

Several open Post-Doc and PhD positions at PTBs QUEST-Institute for Experimental Quantum Metrology
 - at the In+/Yb+ Ion Coulomb Crystal Optical Clock
 - in the field of transportable optical ion clocks
 - in the field of quantum logic spectroscopy of highly charged ions
 - in the field of quantum engineering of optical clocks