QuantumFrontiers Newsletter #14 (Mar 2023)

Europe's quantum heart beats in Lower Saxony this year
Quantum Valley Lower Saxony (QVLS) will become home to the European Quantum Technologies Conference (EQTC) 2023, bringing leading minds from science, industry and politics to Hannover. From the 16th to the 20th of October 2023, up to 1000 guests are expected to attend the event

QuantumFrontiers on the road
As a representative of the Quantum Alliance, QuantumFrontiers presented Germany's excellent quantum research at both the March meeting of the American Physical Society in Las Vegas and the annual meeting of the American Association for the Advancement of Science (AAAS) in Washington.

Twisted light opens up new insights
Silvia Müllner is researching the so-called chirality of light, opening up new paths for various applications such as microscopes, nano-optics or solar cells. She shares her unusual and inspiring path to science - from Austria via Canada and Chile to TU Braunschweig - in the latest QuantumFrontiers story.

Quantum know-how for industries and decision-makers
With the participation of the TU Braunschweig, the Physikalisch-Technische Bundesanstalt (PTB) and the Quantum Valley Lower Saxony (QVLS), the newly founded QTIndu network is creating a Europe-wide network for quantum training.

Germany pools its expertise in quantum communication
Physikalisch-Technische Bundesanstalt and Leibniz Universität Hannover are partners in the umbrella project "Quantenkommunikation Deutschland" (Quantum Communication Germany, SQuaD)

Minister of Science Falko Mohrs visits the Hannover Institute of Technology (HITec)
During a tour of HITec together with Professor Volker Epping and Dr Christoph Strutz, the President and Vice President of LUH, he gained insights into two current research highlights: Quantum Computers and Einstein-Elevator.

MasterClass in Istanbul
Researchers from Braunschweig visit Turkey's top school: The MasterClasses provide insights into the research of QuantumFrontiers and the scientific community for high school students in the Hannover-Braunschweig region – or in some cases in Istanbul.

Measuring individual molecules with diamond quantum sensors
For the last four years, Professor Aslam was researching quantum sensors in diamonds at Harvard University. He is now continuing this research at TU Braunschweig, adding a new facet to the core research area metrology and the Cluster of Excellence QuantumFrontiers. In an interview, Professor Aslam tells us how he uses single atoms in diamonds and what inspired him to become a scientist.

Towards climate studies using quantum technologies
European Commission funds CARIOQA project for the deployment of a quantum gravimeter in space with around 17 million euros

Research Highlights

Stable UV light for optical clocks
Optical clocks based on trapped single ions require at least one phase-stable laser that interrogates the electronic transitions of the clock ion over several seconds. If the interrogation time is too short, the statistical uncertainty of the measurement increases. Six researchers at the Physikalisch-Technische Bundesanstalt have succeeded in developing a compact laser system that delivers phase-stable UV light for an optical clock with aluminium ions. They published their results in the journal Opics Express.

Light conjures up spin and twist
With their work on chiral fluctuation in liquids, a team from the physics department of TU Braunschweig and the chemistry department of JGU Mainz succeeded in using light to change the chirality of a system. For the first time, they were able to clearly distinguish the contributions of chirality (twisted light) from the handedness of light. Their publication was selected by the journal Physical Review Letters as an Editors' Suggestion.

Testing space-time symmetry in atoms with world-record accuracy
Researchers at the QUEST institute at the Physikalisch-Technische Bundesanstalt (PTB) have set improved bounds on a potential violation of Lorentz symmetry from a single trapped Yb+ ion. The results were presented in Nature Communications.

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

Beate Naroska Guest Professorship for Gudrun Wanner
Gudrun Wanner receives the Beate Naroska Junior Guest Professorship 2022 for her outstanding research in Gravitational Physics, as well as for her active involvement in creating equal opportunities for women in physics.

ZARM Award for Leonard Diekmann
The 1st prize of the Förderpreis of the Centre for Applied Space Technology and Microgravity at the University of Bremen (ZARM) 2021 goes to Leonard Diekmann from the Institute of Micro Production Technology at Leibniz Universität Hannover. He receives the award for his Master's thesis on "Fabrication and characterisation of NEG functionalised glass mems for the generation of UHV conditions in miniaturised atom interferometers".

Recent publications

Abbot, R., et al.
Model-based Cross-correlation Search for Gravitational Waves from the Low-mass X-Ray Binary Scorpius X-1 in LIGO O3 Data.
Astrophysical Journal Letters, 941, L30 (2022)

Alonso, I., et al.
Cold atoms in space: community workshop summary and proposed road-map.
EPJ Quantum Technology, 9, 30 (2022).

Dawel, F., Hannig, S., Kramer, J., Nauk, C., Schmidt, P. O., & Kraus, B.
Phase-stabilized UV light at 267 nm through twofold second harmonic generation.
Optics express, 30, 44992-45007 (2022)

Delva, P., Altamimi, Z., Blazquez, A., et.al.
GENESIS: co-location of geodetic techniques in space.
Earth, planets and space, 75, 5 (2023)

Dickmann, J., Sauer, S., Meyer, J., Gaedtke, M., Siefke, T., Brückner, U., Plentz, J., & Kroker, S.
Experimental realization of a 12,000-finesse laser cavity based on a low-noise microstructured mirror
Communications Physics, 6,16 (2023)

Feng, J. L., et al.
The Forward Physics Facility at the High-Luminosity LHC
Journal of Physics G: Nuclear and Particle Physics, 50, 030501 (2023)

Gallemí, A., & Santos, L.
Superfluid properties of a honeycomb dipolar supersolid
Physical Review A, 106, 063301 (2022)

Ghosh, R., Mishra, C., Santos, L., & Nath, R.
Droplet arrays in doubly dipolar Bose-Einstein condensates
Physical Review A, 106, 063318 (2022)

Hao, Z-X., Haase, T., Jin, H-B., Tao, Y-Z., Wanner, G., Wu, R-X., & Wu, Y-L.
Spot size estimation of flat-top beams in space-based gravitational wave detectors
International Journal of Modern Physics D, 32, 2250134 (2022)

Heefer, S., Pfeifer, C., Van Voorthuizen, J., & Fuster, A.
On the metrizability of m -Kropina spaces with closed null one-form
Journal of mathematical physics, 64, 022502 (2023)

Klemme, A., Warneke, T., Bovensmann, H., Weigelt, M., Müller, J., Rixen, T., Notholt, J., & Lämmerzahl, C.
Sediment transport in Indian rivers high enough to impact satellite gravimetry

Koehlenbeck, S. M., Mow-Lowry, C. M., Bergmann, G., Kirchoff, R., Koch, P., Kühn, G., Lehmann, J., Oppermann, P., Wöhler, J., & Wu, D. S.
A study on motion reduction for suspended platforms used in gravitational wave detectors.
Scientific reports, 13, 2388 (2023)

Korbmacher, H., Sierant, P., Li, W., Deng, X., Zakrzewski, J., & Santos, L. 
Lattice control of nonergodicity in a polar lattice gas
Physical Review A, 107, 013301 (2023)

Kranzhoff, S. L., Lehmann, J., Kirchhoff, R., Carlassara, M., Cooper, S. J., Koch, P., Leavey, S., Lück, H., Mow-Lowry, C. M., Wöhler, J., von Wrangel, J., & Wu, D. S.
A vertical inertial sensor with interferometric readout.
Classical and quantum gravity, 40, 015007 (2023)

Lindberg, D. R., Gaaloul, N., Kaplan, L., Williams, J. R., Schlippert, D., Boegel, P., Rasel, E. M., & Bondar, D. I.
Asymmetric tunneling of Bose-Einstein condensates.
Journal of Physics B: Atomic, Molecular and Optical Physics, 56,025302 (2023)

Matiushechkina, M., Evlyukhin, A. B., Zenin, V. A., Heurs, M., & Chichkov, B. N.
High-efficiency silicon metasurface mirror on a sapphire substrate
Optical materials, 138, 113618 (2023)

Meyer-Hoppe, B., Anders, F., Feldmann, P., Santos, L., & Klempt, C.
Excited-state phase diagram of a ferromagnetic quantum gas.
Phys. Rev. Research 3, 043215 (2023)

Misfeldt, M., Müller, V., Müller, L., Wegener, H., & Heinzel, G.
Scale Factor Determination for the GRACE Follow-On Laser Ranging Interferometer Including Thermal Coupling.
Remote sensing, 15, 570 (2023)

Oreshnikov, I., Melchert, O., Willms, S., Bose, S., Babushkin, I., Demircan, A., Morgner, U., & Yulin, A.
Cherenkov radiation and scattering of external dispersive waves by two-color solitons.
Physical Review A, 106, 053514 (2022)

Osborne, T. J., & Stottmeister, A.
Conformal Field Theory from Lattice Fermions.
Communications in Mathematical Physics, 398, 219-289 (2023)

Pür, C., Hetzel, M., Quensen, M., Hüper, A., Geng, J., Kruse, J., Ertmer, W., & Klempt, C.  
Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates.
Physical Review A, 107, 033303 (2023)

Šindik, M., Recati, A., Roccuzzo, S. M., Santos, L., & Stringari, S.
Creation and robustness of quantized vortices in a dipolar supersolid when crossing the superfluid-to-supersolid transition.
Physical Review A, 106, L061303 (2022)

Singh, V. V., Müller, J., Biskupek, L., Hackmann, E., & Lämmerzahl, C.
Equivalence of Active and Passive Gravitational Mass Tested with Lunar Laser Ranging

Wilming, H., & Osborne, T. J.
Quantized and maximum entanglement from sublattice symmetry.
Physical Review A, 107, 022418 (2023)

Funding opportunities

Internal: New round of Flexible Fund proposals
The new deadlines for Flexible Funds proposals are:
Proposals > 50.000€: Monday, 08.05.2023
Proposals < 50.000€: Monday, 15.05.2023 

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

Joint Conference of the IEEE International Frequency Control Symposium & European Frequency and Time Forum (IFCS-EFTF)
15-19 May 2023, Toyama (Japan)

Gordon Research Conference: Precision Measurement, Quantum Science and Ultracold Phenomena in Atomic and Molecular Physics
11-16 Jun 2023, Newport (USA)

Young Atom Opticians conference (YAO)
12-16 Jun 2023, Barcelona (Spain)

54th Conference of the European Group on Atomic Systems (EGAS 54)
18-22 Jun 2023, Strasbourg (France)

Optica Quantum 2.0 Conference and Exhibition
19-22 Jun 2023, Denver (USA)

International Conference on Laser Spectroscopy (ICOLS2023)
25-30 Jun 2023, Estes Park, Colorado (USA)

World of QUANTUM / Laser World of Photonics
27-30 Jun 2023, Munich (Germany)

Summer school: Search for new physics with low-energy precision tests
02-07 Jul 2023, Ameland (The Netherlands)

Central European Workshop on Quantum Optics (CEWQO2023)
03-07 Jul 2023, Milan (Italy)

2023 NIST Time and Frequency Seminar
10-12 Jul 2023, Boulder, Co. (USA)

28th General Assembly of the International Union of Geodesy and Geophysics (IUGG)
11-20 Jul 2023, Berlin (Germany)

Gordon Research Conference — Quantum Control of Light and Matter
06-11 Aug 2023, Newport (USA)

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

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

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)

Open Positions

Several PhD and postdoctoral positions within Quantum Valley Lower Saxony (QVLS)
 - Research Assistant in ion trap quantum processor design
 - Research Assistant  in construction and commissioning of quantum computers
 - Research Assistant in operating and benchmarking of quantum computers
 - Research Assistant  in advanced transport protocols for ion-trap quantum processors
 - Postdoctoral research associate  on quantum logic spectroskopy of single (anti-)protons

Three open Post-Doc 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

Four open PhD positions at PTBs QUEST-Institute for Experimental Quantum Metrology
 - in the field of quantum logic spectroscopy
 - in the field of quantum logic spectroscopy of highly charged ions
 - in the field of optical clocks
 - in the field of transportable optical ion clocks

Doctoral Researcher/PhD Student in Quantum Sensing & Magnetometry at LUHs Institute of Solid State Physics in the Group of Prof. Dr. Ilja Gerhardt

Doctoral Researcher/PhD Student in Quantum Cryptography at LUHs Institute of Solid State Physics in the Group of Prof. Dr. Ilja Gerhardt