QuantumFrontiers Newsletter #09 (Oct 2021)

News

DFG Funding Atlas 2021: Leibniz University of Hannover ranks top in quantum optics and geodesy
The new Funding Atlas presents key figures on publicly funded research, based on several tens of thousands of data from all major public research funders in Germany and from the European Union. In the field of physics, LUH ranks seventh in Germany. In the sub-field of optics, quantum optics and physics of atoms, molecules and plasmas Leibniz University achienes an excellent first place. The research field of geophysics and geodesy is also very successful, achieving 1st place in its group.

QuantumFrontiers launches competences database
The online tool bundles information on the available infrastructure and expertise in the Cluster in one single place. Both internal and external cooperation partners thus have a tool at their disposal to find competences and the respective contact persons on, for example, materials development and characterization, calculations, measurement techniques or instrumentation.

Helmholtz Prize 2022: Focus on Metrology
Since 1973, the Helmholtz Prize has been awarded every two to three years for outstanding scientific and technological achievements in the field of metrology. For 2022, the Helmholtz Prize will be awarded in two categories: “fundamentals” and “applications”, each of which is endowed with €20,000 in prize money.

Testing the first prototypes of a quantum computer
QVLS-Q1: The first prototypes of a quantum computer are already being tested. During a press tour with Lower Saxony's Minister of Science Björn Thümler, the results to date and the visionary plans of the Quantum Valley Lower Saxony initiative were presented. By 2030 1.5 billion euros are to be invested in quantum technologies.

Networking Symposium: Humboldt meets Leibniz - Emerging Topics in Optics and Photonics
The conference "Humboldt meets Leibniz" is a new Networking Conference for PhD students and Postdocs in Hannover. It informs about international career paths in the academic world. 14 Humboldt Award winners with a research focus in optics and photonics will answer the questions of 150 selected PhD students and Postdocs two days long. The conference will take place from 12 to 14 June 2022 in Hannover.
The application deadline is 1 November 2021.

Exzellent erklärt – Spitzenforschung für alle.
57 Exzellenzcluster, ein Podcast. Regelmäßig berichtet „Exzellent erklärt“ aus einem der Forschungsverbünde, die im Rahmen der Exzellenzstrategie des Bundes und der Länder gefördert wird. Die Reise geht quer durch die Republik, genauso vielfältig wie die Standorte sind die Themen: Von A wie Afrikastudien bis Z wie Zukunft der Medizin. Alle Exzellenzcluster verbindet eine gemeinsame Motivation: Sie adressieren wichtige Themen unserer Zeit, bearbeiten außergewöhnliche Fragen und forschen für die Gesellschaft von morgen.

Research Highlights

Supersolid in a new dimension
Quantum matter can be solid and fluid at the same time – a situation known as supersolidity. A collaboration has now created for the first time this fascinating property along two dimensions.

Collective-Mode Enhanced Matter-Wave Optics
Researchers have now succeeded in realising a matter wave lens system that almost completely stops the expansion of the BEC by exploiting the repulsive interactions within the BEC.

In the trap: New method for cooling charged particles
System consisting of two Penning traps connected to an electrical resonant circuit transmits the cooling power of laser-cooled ions

Laser power stabilization via radiation pressure
how to use radiation pressure to measure and stabilize fluctuations in laser beams – for example in future gravitational wave detectors.

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

Prof. Dr. Piet O. Schmidt appointed APS Fellow
He receives the honoring for the development of quantum logic spectroscopy techniques and their application in pioneering high precision measurements of optical transitions in atoms, molecules, and highly charged ions.

First place for Christoph Lotz at the Falling Walls Lab Rhineland
In the category "Emerging Talents", he convinced the jury with his contribution "Breaking the Wall of Space Research on Earth" and took first place.

Marina Trad Nery has been awarded the 2020 GWIC-Braccini Thesis Prize
With the prize, the Gravitational Wave International Committee (GWIC) recognizes the importance of her doctoral thesis on more stable lasers for gravitational wave detectors

Recent publications

H. Georgieva et al., “Absolute calibration of a single-photon avalanche detector using a bright triggered single-photon source based on an InGaAs quantum dot,” Optics Express, vol. 29, no. 15, Art. no. 15, Jul. 2021.

P. Kaebert et al., “Characterizing the Zeeman slowing force for 40Ca19F molecules,” New Journal of Physics, vol. 23, no. 9, Art. no. 9, Sep. 2021.

V. P. Singh and L. Mathey, “Collective modes and superfluidity of a two-dimensional ultracold Bose gas,” Physical Review Research, vol. 3, no. 2, Art. no. 2, May 2021.

H. Georgieva et al., “Detection of ultra-weak laser pulses by free-running single-photon detectors: Modeling dead time and dark counts effects,” Applied Physics Letters, vol. 118, no. 17, Art. no. 17, Apr. 2021.

R. Schwonnek et al., “Device-independent quantum key distribution with random key basis,” Nature Communications, vol. 12, no. 1, Art. no. 1, May 2021.

S. Hochheim et al., “Highly-integrated signal and pump combiner in chirally-coupled-core fibers for all-fiber lasers and amplifiers,” Journal of Lightwave Technology, p. 1, 2021.

S. Ulbricht, J. Dickmann, R. A. Müller, S. Kroker, and A. Surzhykov, “Impact of Earth’s gravity on Gaussian beam propagation in hemispherical cavities,” Physical Review D, vol. 104, no. 6, Art. no. 6, Sep. 2021.

S. Xu, P. Kaebert, M. Stepanova, T. Poll, M. Siercke, and S. Ospelkaus, “Maximizing the capture velocity of molecular magneto-optical traps with Bayesian optimization,” New Journal of Physics, vol. 23, no. 6, Art. no. 6, Jun. 2021.

D. N. Gulkin et al., “Mie-driven directional nanocoupler for Bloch surface wave photonic platform,” Nanophotonics, vol. 10, no. 11, Art. no. 11, Sep. 2021.

F. Anders et al., “Momentum Entanglement for Atom Interferometry,” Physical Review Letters, vol. 127, no. 14, Art. no. 14, Sep. 2021.

C. Schubert et al., “Multi-loop atomic Sagnac interferometry,” Scientific Reports, vol. 11, no. 1, Art. no. 1, Aug. 2021.

N. Ustimenko et al., “Multipole optimization of light focusing by silicon nanosphere structures,” JOSA B, vol. 38, no. 10, Art. no. 10, Oct. 2021, .

B. Buonacorsi et al., “Non-adiabatic single-electron pumps in a dopant-free GaAs/AlGaAs 2DEG,” Applied Physics Letters, vol. 119, no. 11, Art. no. 11, Sep. 2021.

N. B. Chichkov and B. N. Chichkov, “On the origin of photon mass, momentum, and energy in a dielectric medium [Invited],” Optical Materials Express, vol. 11, no. 8, Art. no. 8, Aug. 2021.

E. L. Rösch et al., “Point-of-need detection of pathogen-specific nucleic acid targets using magnetic particle spectroscopy,” Biosensors and Bioelectronics, vol. 192, p. 113536, Nov. 2021.

S. Bornemann et al., “Processing and Characterization of Monolithic Passive-Matrix GaN-Based MicroLED Arrays With Pixel Sizes From 5 to 50 µm,” IEEE Photonics Journal, vol. 13, no. 5, Art. no. 5, Oct. 2021, .

U. Rossow et al., “Pyramid Formation by Etching of In x Ga 1 - x N /GaN Quantum Well Structures Grown on N-face GaN for Nanooptical Light Emitters,” physica status solidi (b), vol. 258, no. 10, Oct. 2021.

J. M. Cornejo et al., “Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons,” New Journal of Physics, vol. 23, no. 7, Art. no. 7, Jul. 2021.

V. Sequino, “Quantum noise reduction in Advanced Virgo,” Physica Scripta, vol. 96, no. 10, Art. no. 10, Jul. 2021.

A. V. Maiorova, A. A. Peshkov, and A. Surzhykov, “Radiative recombination of twisted electrons with hydrogenlike heavy ions: Linear polarization of emitted photons,” Physical Review A, vol. 104, no. 2, Art. no. 2, Aug. 2021.

V. G. Serbo, A. Surzhykov, and A. Volotka, “Resonant Scattering of Plane-Wave and Twisted Photons at the Gamma Factory,” Annalen der Physik, vol. n/a, no. n/a, Art. no. n/a.

S. Bose et al., “Role of frequency dependence of the nonlinearity on a soliton’s evolution in photonic crystal fibers,” Optics Letters, vol. 46, no. 16, Art. no. 16, Aug. 2021, doi: 10.1364/OL.433238.

A. P. Frauendorf et al., “Room Temperature Micro-Photoluminescence Studies of Colloidal WS2 Nanosheets,” The Journal of Physical Chemistry C, vol. 125, no. 34, Art. no. 34, Sep. 2021.

M. Tollkühn, B. Hampel, I. Elenskiy, and M. Schilling, “Superconducting Josephson Cantilevers for THz Microscopy,” in 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Nov. 2020, p. 1.

B. Hampel, M. Tollkühn, I. Elenskiy, and M. Schilling, “THz Microscopy of Additive Manufactured Optical Components,” in 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Nov. 2020, p. 1.

H. Wegener, V. Müller, G. Heinzel, and M. Misfeldt, “Tilt-to-Length Coupling in the GRACE Follow-On Laser Ranging Interferometer,” Journal of Spacecraft and Rockets, vol. 57, no. 6, Art. no. 6, Nov. 2020.

S. Kanthak, M. Gebbe, M. Gersemann, S. Abend, E. M. Rasel, and M. Krutzik, “Time-domain optics for atomic quantum matter,” New Journal of Physics, vol. 23, no. 9, Art. no. 9, Sep. 2021.

L. Zhong, K. Sosnica, M. Weigelt, B. Liu, and X. Zou, “Time-Variable Gravity Field from the Combination of HLSST and SLR,” Remote Sensing, vol. 13, no. 17, Art. no. 17, Jan. 2021.

S. Mondal, S. Greschner, L. Santos, and T. Mishra, “Topological inheritance in two-component Hubbard models with single-component Su-Schrieffer-Heeger dimerization,” Physical Review A, vol. 104, no. 1, Art. no. 1, Jul. 2021.

M. A. Norcia et al., “Two-dimensional supersolidity in a dipolar quantum gas,” Nature, vol. 596, no. 7872, Art. no. 7872, Aug. 2021.

A. Sinterhauf, G. A. Traeger, D. Momeni, K. Pierz, H. W. Schumacher, and M. Wenderoth, “Unraveling the origin of local variations in the step resistance of epitaxial graphene on SiC: a quantitative scanning tunneling potentiometry study,” Carbon, vol. 184, pp. 463–469, Oct. 2021.

New on arXiv from QuantumFrontiers

Thomas Bland, Elena Poli, Claudia Politi, Lauritz Klaus, Matthew A. Norcia, Francesca Ferlaino, Luis Santos, Russell N. Bisset
Two-dimensional supersolidity in a circular trap

Florian Büscher, Silvia Müllner, Dirk Wulferding, Yurii G. Pashkevich, Vladimir Gnezdilov, Anton A. Peshkov, Andrey Surzhykov, Peter Lemmens
Raman scattering of plane-wave and twisted light off chiral molecular liquids

Christophe De Beule, Fernando Dominguez, Patrik Recher
Network model and four-terminal transport in minimally twisted bilayer graphene

Andrey B. Evlyukhin, Maria Poleva, Alexey Prokhorov, Kseniia Baryshnikova, Andrey E. Miroshnichenko, Boris N. Chichkov
Polarization switching of quasi-trapped modes and near field enhancement in bianisotropic all-dielectric metasurfaces

Anna V. Maiorova, Anton A. Peshkov, Andrey Surzhykov
Radiative recombination of twisted electrons with hydrogen-like heavy ions: Linear polarization of emitted photons

M. Niemann, A.-G. Paschke, T. Dubielzig, S. Ulmer, C. Ospelkaus
CPT test with (anti-)proton magnetic moments based on quantum logic cooling and readout

Baptist Piest, Vera Vollenkemper, Jonas Böhm, Alexander Herbst, Ernst M. Rasel
Red- and blue-detuned magneto-optical trapping with liquid crystal variable retarders

Elena Poli, Thomas Bland, Claudia Politi, Lauritz Klaus, Matthew A. Norcia, Francesca Ferlaino, Russell N. Bisset, Luis Santos
Maintaining supersolidity in one and two dimensions

Benedikt Probst, Pauli Virtanen, Patrik Recher
Sub- to Super-Poissonian crossover of current noise in helical edge states coupled to a spin impurity in a magnetic field

Valeriy G. Serbo, Andrey Surzhykov, Andrey Volotka
Resonant scattering of plane-wave and twisted photons at the Gamma Factory

L. Timm, L. A. Rüffert, H. Weimer, L. Santos, T. E. Mehlstäubler
Quantum nanofriction in trapped ion chains with a topological defect

Funding opportunities

Internal: New round of Flexible Fund proposals
The Science Board Meeting for the next flexible fund round is scheduled for November 12th, 2021.  
Accordingly, the new deadlines for Flexible Funds proposals are:
Proposals > 50.000€: Wednesday, 27.10.2021
Proposals < 50.000€: Wednesday, 03.11.2021 

Please mark November 12th, 9:00 in your calendars as one of the applicants will have to present the proposals in the next science board meeting.

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

NanoMet Symposium
11-12 Nov 2021, Braunschweig (Germany)

European Conference on Trapped Ions (ECTI)
22-26 Nov 2021, hybrid event. 

2nd European Quantum Technology Conference
29 Nov-03 Dec 2021, Dublin (Ireland)

Particle & AMO Physicists discussing Quantum Sensors and New Physics
06-17 Dec 2021, Garching (Germany)

Early Career Conference in Trapped Ions (ECCTI)
10-14 Jan 2022, CERN, Geneva (Switzerland)

LEAPS meets Quantum Technology
16-22 May 2022 Elba (Italy)

European Conference on Atoms Molecules and Photons (ECAMP14)
27 Jun-01 Jul 2022, Vilnius (Lithuania)

International Conference on Quantum Communication, Measurement and Computing (QCMC 2021)
11-15 Jul 2022, Lisbon (Portugal)

27th International Conference on Atomic Physics (ICAP)
17-22 Jul 2022, Toronto (Canada)

QMATH Masterclass 2021 on Entropy Inequalities in Quantum Information Science
22-26 Aug 2022, Copenhagen (Denmark)

IAMP – EMS Summer School in Mathematical Physics 
29 Aug-02 Sep 2022, Munich (Germany)

ICIOP 2020/2021 - International Conference on Integrated Quantum Photonics
5-7 Oct 2022, Copenhagen (Denmark)

Other Events

Quantum Alliance Community Networking Event
The event brings together PhDs and PostDocs from the quantum research clusters and centers within the Quantum Alliance.
10 Nov 2021, 09:00-12:00h, Online

Open Positions

Tenure Track Professorship (m/f/d) for the field of satellite geodesy / University Assistant with Doctorate (m/f/d)
at the Faculty of Mathematics, Physics and Geodesy, Institute of Geodesy at TU Graz. Start on March 1st, 2022 as university assistant with doctorate. Aplication deadline: 17.11.2021