QuantumFrontiers Newsletter #07 (Mar 2021)

Announcements

A friendly reminder about the correct use of our acknowledgements. For any kind of publications use the following acknowledgements:

German
„Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) im Rahmen der Exzellenzstrategie des Bundes und der Länder – EXC-2123 QuantumFrontiers – 390837967“

English
Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC-2123 QuantumFrontiers – 390837967“

Other languages
The sentence can be translated accordingly. Ensure that you still use the name „Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)“ as is. This ensures that DFG will find the publication and assigns it to QuantumFrontiers.

News

ML4Q&A - new podcast is online with its first episode
The Cluster of Excellence Matter and Light for Quantum Computing launched its podcast ML4Q&A with the first episode featuring Martino Calzavara, a PhD student in the group of Tommaso Calarco, director of the PGI-8 Institute for Quantum Control at the Forschungszentrum Jülich.  
The producers aim to use this podcast in order to feature as many different faces from the German quantum community as possible and they aspire to invite various representatives of the different stakeholder groups that are currently involved in shaping Germany's future of quantum science and technologies.

Quantum computing - made in Lower Saxony
Quantum alliance QVLS provides insights into their quantum computer research laboratories. Within the next five years, Lower Saxony's first quantum computer with 50 qubits is to be launched. Last month, members of the initiative Quantum Valley Lower Saxony (QVLS) presented their strategy for achieving this goal.

In pursuit of the elusive: The particle experiment aimed at finding Majorana fermions
For almost 100 years, Majorana fermions have been considered mathematically possible but experimentally invisible. However, there seem to be quasiparticles in superconductors that have the properties of Majorana fermions.

Research Highlights

Ultracold atom interferometry in space
Research team publishes additional findings of the MAIUS-1 rocket mission to be used in fundamental physics, navigation and Earth observation in Nature Communications.

Artificial Intelligence for Nano- and Quantum Physics
A research project at the Technische Universität Braunschweig is now bringing together expertise from applied physics and machine learning in the research field of metrology. The project also benefits the activities of the Cluster of Excellence QuantumFrontiers on imaging techniques.

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

Dr. Vitali Müller receives a 2020 Zeldovich Medal
Vitali Müller received one of the eight biennial 2020 Zeldovich Medals awarded by the international Committee on Space Research (COSPAR) for his work in the field of interferometry between satellites and its applications.

Wilhelm and Else Heraeus Young Physicists Award for Peter Micke and Giorgio Zarantonello
The Faculty of Mathematics and Physics at Leibniz University has honored two outstanding dissertations in the field of quantum optics. The prizes went to Peter Micke for his work "Quantum Logic Spectroscopy of Highly Charged Ions" and to Giorgio Zarantonello with the topic "Robust high-fidelity microwave near-field entangling quantum logic gate".

Prize of the Leibniz University Society Hannover for Marina Trad Nery
Last years DAAD and university awards for international students and doctoral candidates were presented in December. The awards reward both the extraordinarily high social commitment within and outside the university as well as the outstanding professional achievements of the award winners.

Recent publications

Alula M T, Lemmens P, Madiba M, Present B (2020) Synthesis of free-standing silver nanoparticles coated filter paper for recyclable catalytic reduction of 4-nitrophenol and organic dyes. Cellulose 27:2279–2292.

Ardila L A P, Astrakharchik G E, Giorgini S (2020) Strong coupling Bose polarons in a two-dimensional gas. Physical Review Research 2:023405

Bagchi D, Bhattacharya A, Dutta T, Nag S, Wulferding D, Lemmens P, Pal S K (2019) Nano MOF Entrapping Hydrophobic Photosensitizer for Dual-Stimuli-Responsive Unprecedented Therapeutic Action against Drug-Resistant Bacteria. ACS Applied Bio Materials 2:1772–1780.

Biskupek L, Müller J, Torre J-M (2020) Benefit of New High-Precision LLR Data for the Determination of Relativistic Parameters. Universe 2021, 7(2), 34 

Bisset R N, Ardila L A P, Santos L (2021) Quantum Droplets of Dipolar Mixtures. Physical Review Letters 126:25301.

Brange F, Schmidt A, Bayer J C, Wagner T, Flindt C, Haug R J (2021) Controlled emission time statistics of a dynamic single-electron transistor. Science Advances 7:eabe0793.

Christinck J, Rodiek B, López M, Hofer H, Georgieva H, Kück S (2020) Characterization of the angular-dependent emission of nitrogen-vacancy centers in nanodiamond. Applied Physics B 126:161.

Chu A, Will J, Arlt J, Klempt C, Rey A M (2020) Simulation of XXZ Spin Models Using Sideband Transitions in Trapped Bosonic Gases. Physical Review Letters 125:240504.

Corgier R, Loriani S, Ahlers H, Posso-Trujillo K, Schubert C, Rasel E M, Charron E, Gaaloul N (2020) Interacting quantum mixtures for precision atom interferometry. New Journal of Physics 22:123008.

Dharmawan A B, Mariana S, Scholz G, Hörmann P, Schulze T, Triyana K, Garcés-Schröder M, Rustenbeck I, Hiller K, Wasisto H S, Waag A (2021) Nonmechanical parfocal and autofocus features based on wave propagation distribution in lensfree holographic microscopy. Scientific Reports 11: 3213

Duan Y, Bidasyuk Y M, Surzhykov A (2020) Symmetry breaking and phase transitions in Bose-Einstein condensates with spin–orbital-angular-momentum coupling. Physical Review A 102:063328

Dörscher S, Huntemann N, Schwarz R, Lange R, Benkler E, Lipphardt B, Sterr U, Peik E, Lisdat C (2021) Optical frequency ratio of a ¹⁷¹Yb⁺ single-ion clock and a ⁸⁷Sr lattice clock. Metrologia 58:15005.

Frombach D, Recher P (2020) Quasiparticle poisoning effects on the dynamics of topological Josephson junctions. Physical Review B 101: 

Gut C, Winkler K, Hoelscher-Obermaier J, Hofer S G, Nia R M, Walk N, Steffens A, Eisert J, Wieczorek W, Slater J A, Aspelmeyer M, Hammerer K (2020) Stationary optomechanical entanglement between a mechanical oscillator and its measurement apparatus. Physical Review Research 2:

Kosheleva V P, Zaytsev V A, Müller R A, Surzhykov A, Fritzsche S (2020) Resonant two-photon ionization of atoms by twisted and plane-wave light. Physical Review A 102: 

Kozlyakova E S, Denisova K N, Eliseev A A, Moskin A V, Akhrorov A Y, Berdonosov P S, Dolgikh V A, Rahaman B, Das S, Saha-Dasgupta T, Lemmens P, Vasiliev A N, Volkova O S (2020) Short-range and long-range magnetic order in Fe(Te_1.5Se_0.5)O₅Cl. Physical Review B 102: 214405

Kumar Maji T, Hasan M N, Ghosh S, Wulferding D, Bhattacharya C, Lemmens P, Karmakar D, Kumar Pal S (2020) Development of a magnetic nanohybrid for multifunctional application: From immobile photocatalysis to efficient photoelectrochemical water splitting: A combined experimental and computational study. Journal of Photochemistry and Photobiology A: Chemistry 397:112575.

Lachmann M D, Ahlers H, Becker D, Dinkelaker A N, Grosse J, Hellmig O, Müntinga H, Schkolnik V, Seidel S T, Wendrich T, Wenzlawski A, Weps B, Gaaloul N, Lüdtke D, Braxmaier C, Ertmer W, Krutzik M, Lämmerzahl C, Peters A, Schleich W P, Sengstock K, Wicht A, Windpassinger P, Rasel E M (2021) Ultracold atom interferometry in space. Nature Communications 12: 1317

Lee S, Klauer R, Menten J, Lee W, Yoon S, Luetkens H, Lemmens P, Möller A, Choi K-Y (2020) Unconventional spin excitations in the S=³/₂ triangular antiferromagnet RbAg₂Cr[VO₄]₂. Physical Review B 101: 224420

Loriani S, Schubert C, Schlippert D, Ertmer W, Pereira Dos Santos F, Rasel E M, Gaaloul N, Wolf P (2020) Resolution of the colocation problem in satellite quantum tests of the universality of free fall. Physical Review D 102: 124043

Lough J, Schreiber E, Bergamin F, Grote H, Mehmet M, Vahlbruch H, Affeldt C, Brinkmann M, Bisht A, Kringel V, Lück H, Mukund N, Nadji S, Sorazu B, Strain K, Weinert M, Danzmann K (2021) First Demonstration of 6 dB Quantum Noise Reduction in a Kilometer Scale Gravitational Wave Observatory. Physical Review Letters 126:41102

Mehmet M, Vahlbruch H (2018) High-efficiency squeezed light generation for gravitational wave detectors. Classical and Quantum Gravity 36:15014.

Meshksar N, Mehmet M, Isleif K-S, Heinzel G (2020) Applying Differential Wave-Front Sensing and Differential Power Sensing for Simultaneous Precise and Wide-Range Test-Mass Rotation Measurements. Sensors (Basel, Switzerland) 21:164.

Momeni Pakdehi D, Schädlich P, Nguyen T T N, Zakharov A A, Wundrack S, Najafidehaghani E, Speck F, Pierz K, Seyller T, Tegenkamp C, Schumacher H W (2020) Silicon Carbide Stacking-Order-Induced Doping Variation in Epitaxial Graphene. Advanced Functional Materials 30:45,2004695

Mukund N, Lough J, Affeldt C, Bergamin F, Bisht A, Brinkmann M, Kringel V, Lück H, Nadji S, Weinert M, Danzmann K (2020) Bilinear noise subtraction at the GEO 600 observatory. Physical Review D 101:102006.

Müller J, Wu H (2020) Using quantum optical sensors for determining the Earth’s gravity field from space. Journal of Geodesy 94: 71

Nordmann T, Didier A, Doležal M, Balling P, Burgermeister T, Mehlstäubler T E (2020) Sub-kelvin temperature management in ion traps for optical clocks. Review of Scientific Instruments 91:111301.

Novik E G, Novik E G, Novik E G, Trauzettel B, Trauzettel B, Recher P, Recher P (2020) Transport signatures of a junction between a quantum spin Hall system and a chiral topological superconductor. Physical Review B 101: 235308

Pistorius T, Kazemi J, Weimer H (2020) Quantum Many-Body Dynamics of Driven-Dissipative Rydberg Polaritons. Physical Review Letters 125:263604.

Richardson L L, Rajagopalan A, Albers H, Meiners C, Nath D, Schubert C, Tell D, Wodey É, Abend S, Gersemann M, Ertmer W, Rasel E M, Schlippert D, Mehmet M, Kumanchik L, Colmenero L, Spannagel R, Braxmaier C, Guzmán F (2020) Optomechanical resonator-enhanced atom interferometry. Communications Physics 3:1–6.

Schulte M, Lisdat C, Schmidt P O, Sterr U, Hammerer K (2020) Prospects and challenges for squeezing-enhanced optical atomic clocks. Nature Communications 11:5955.

Strempel K, Römer F, Yu F, Meneghini M, Bakin A, Wehmann H-H, Witzigmann B, Waag A (2021) Vertical 3D gallium nitride field-effect transistors based on fin structures with inverted p-doped channel. Semiconductor Science and Technology 36:14002.

Timm L, Weimer H, Santos L, Mehlstäubler T E (2020) Energy localization in an atomic chain with a topological soliton. Physical Review Research 2:

Timmen L, Rothleitner C, Reich M, Schröder S, Cieslack M (2020) Investigation of Scintrex CG-6 Gravimeters in the Gravity Meter Calibration System Hannover. AVN Allgemeine Vermessungsnachrichten 127:155–162

Timmen L, Gerlach C, Rehm T, Völksen C, Voigt C (2021) Geodetic-Gravimetric Monitoring of Mountain Uplift and Hydrological Variations at Zugspitze and Wank Mountains (Bavarian Alps, Germany). Remote Sens. 13(5), 918 

Trofymchuk K, Glembockyte V, Grabenhorst L, Steiner F, Vietz C, Close C, Pfeiffer M, Richter L, Schütte M L, Selbach F, Yaadav R, Zähringer J, Wei Q, Ozcan A, Lalkens B, Acuna G P, Tinnefeld P (2021) Addressable nanoantennas with cleared hotspots for single-molecule detection on a portable smartphone microscope. Nature Communications 12:950.

Weise A, Timmen L, Deng Z, Gabriel G, Rothleitner C, Schilling M, Voigt C (2020) Observing Ocean Mass Variability with Spring Gravimeters – Storm Surge Induced Signals on the North Sea Island Helgoland. AVN Allgemeine Vermessungsnachrichten 127:163–173

Wodey E, Tell D, Rasel E M, Schlippert D, Baur R, Kissling U, Kölliker B, Lorenz M, Marrer M, Schläpfer U, Widmer M, Ufrecht C, Stuiber S, Fierlinger P (2020) A scalable high-performance magnetic shield for very long baseline atom interferometry. Review of Scientific Instruments 91: 035117

Wodey E, Rengelink R J, Meiners C, Rasel E M, Schlippert D (2021) A robust, high-flux source of laser-cooled ytterbium atoms. Journal of Physics B: Atomic, Molecular and Optical Physics 54:35301.

Wu H, Müller J Towards an International Height Reference Frame Using Clock Networks. In: International Association of Geodesy Symposia. Springer, Berlin, Heidelberg, pp 1–8

Wulferding D, Lemmens P, Büscher F, Schmeltzer D, Felser C, Shekhar C (2020) Effect of topology on quasiparticle interactions in the Weyl semimetal WP2. Physical Review B 102:

Wulferding D, Choi Y, Do S-H, Lee C H, Lemmens P, Faugeras C, Gallais Y, Choi K-Y (2020) Magnon bound states versus anyonic Majorana excitations in the Kitaev honeycomb magnet α-RuCl₃. Nature Communications 11:1603.

Yang J, Yang J, Nawrath C, Nawrath C, Keil R, Joos R, Zhang X, Höfer B, Chen Y, Zopf M, Jetter M, Portalupi S L, Ding F, Ding F, Ding F, Michler P, Michler P, Schmidt O G, Schmidt O G (2020) Quantum dot-based broadband optical antenna for efficient extraction of single photons in the telecom O-band. Optics Express 28:19457–19468.

Yulianto N, Kadja G T M, Bornemann S, Gahlawat S, Majid N, Triyana K, Abdi F F, Wasisto H S, Waag A (2021) Ultrashort pulse laser lift-off processing of InGaN/GaN light-emitting diode chips. ACS Applied Electronic Materials. 3,2

New on arXiv from QuantumFrontiers

Liliane Biskupek, Jürgen Müller, Jean-Marie Torre: Benefit of New High-Precision LLR Data for the Determination of Relativistic Parameters

D. Kalincev, L. S. Dreissen, A. P. Kulosa, C-H. Yeh, H. A. Fürst, T. E. Mehlstäubler: Motional heating of spatially extended ion crystals

Raphael Kaubruegger, Denis V. Vasilyev, Marius Schulte, Klemens Hammerer, Peter Zoller: Quantum Variational Optimization of Ramsey Interferometry and Atomic Clocks

Jan Kiethe, Lars Timm, Haggai Landa, Dimitri Kalincev, Giovanna Morigi, Tanja E. Mehlstäubler: Finite temperature spectrum at the symmetry-breaking linear-zigzag transition

Steven A. King, Lukas J. Spieß, Peter Micke, Alexander Wilzewski, Tobias Leopold, José R. Crespo López-Urrutia, Piet O. Schmidt: Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using Quantum Logic

Wei-Han Li, Arya Dhar, Xiaolong Deng, Luis Santos: Cluster dynamics in two-dimensional lattice gases with inter-site interactions

Kevin A. Madsen, Piet W. Brouwer, Patrik Recher, Peter G. Silvestrov: Interference effects induced by a precessing easy-plane magnet coupled to a helical edge state

Matthew A. Norcia, Claudia Politi, Lauritz Klaus, Elena Poli, Maximilian Sohmen, Manfred J. Mark, Russell Bisset, Luis Santos, Francesca Ferlaino: Two-dimensional supersolidity in a dipolar quantum gas

Nils-Holger Rehbehn, Michael K. Rosner, Julian C. Berengut, Piet O. Schmidt, Steven A. King, Peter Micke, Ming Feng Gu, Robert Müller, Andrey Surzhykov, José R. Crespo López-Urrutia: Sensitivity to New Physics of Isotope Shift Studies using the Coronal Lines of Highly Charged Calcium Ions

Christian Schubert, Sven Abend, Matthias Gersemann, Martina Gebbe, Dennis Schlippert, Peter Berg, Ernst M. Rasel: Multi-loop atomic Sagnac interferometry

Singh V V, Biskupek L, Müller J, Zhang M: Impact of non-tidal station loading in LLR.

J. Stark, C. Warnecke, S. Bogen, S. Chen, E. A. Dijck, S. Kühn, M. K. Rosner, A. Graf, J. Nauta, J.-H. Oelmann, L. Schmöger, M. Schwarz, D. Liebert, L. J. Spieß, S. A. King, T. Leopold, P. Micke, P. O. Schmidt, T. Pfeifer, J. R. Crespo López-Urrutia: An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions

U. Tanaka, M. Nakamura, K. Hayasaka, A. Bautista-Salvadora, C. Ospelkaus, T. E. Mehlstäubler: Creation of double-well potentials in a surface-electrode trap towards a nanofriction model emulator

Nikita A. Ustimenko, Kseniia V. Baryshnikova, Roman V. Melnikov, Danil F. Kornovan, Vladimir I. Ulyantsev, Boris N. Chichkov, Andrey B. Evlyukhin: Multipole optimization of light focusing by silicon nanosphere structures

Funding opportunities

Internal: New round of Flexible Fund proposals
The next Science Board Meeting is scheduled for April 1^st, 2021.  
Accordingly, the new deadlines for Flexible Funds proposals are:
Proposals > 50.000€: Friday, 30.04.2021
Proposals < 50.000€: Friday, 07.05.2021 

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

YAO-2021 - NOW ONLINE EVENT
The Young Atom Optician conference (YAO) is an annual meeting aimed at PhD students and young researchers in the field of quantum optics and atomic and molecular physics. The goal is to provide the participants with a platform to learn from and extend their network with peers from around the world.
26-28 May 2021, Aarhus, Denmark

International Conference on Quantum Communication, Measurement and Computing
The QCMC was established in 1990 to encourage and bring together scientists and engineers working in the interdisciplinary field of quantum information science and technology.
05-09 Jul 2021, Lisbon, Portugal

52nd EGAS conference - NOW ONLINE EVENT
EGAS is a division of the European Physical Society and has held an annual conference every year since 1969 without interruption. The conference is one of the most successful European conferences in the broad field of AMO physics, typically attracting around 200 participants. As in previous years, we expect to attract a large audience covering a wide range of interests from all fields related to EGAS.
06-08 Jul 2021, Zagreb, Croatia

2nd European Quantum Technologies Conference (EQTC)
The EQTC is the international conference of the European Quantum Flagship initiative, which collaboratively advances quantum technologies and places Europe at the forefront of the second quantum revolution, bringing transformative advances to science, industry and society.
29 Nov-03 Dec 2021, Dublin, Ireland

Particle & AMO Physicists discussing Quantum Sensors and New Physics
In the last decade or so quantum technologies have made tremendous progress, from redefining the second to establishing quantum supremacy. This unequalled ability to control quantum systems leads to a potential to make measurements with unprecedented accuracy. In order to maximize the impact of using quantum technology to probe fundamental interactions it is critical that each community improves its knowledge of the other discipline. We plan to bring in world experts in quantum technologies and particle physics in order to discuss how the recent progress in the precision front of quantum sensors could be used to search for new physics and study fundamental interactions.
NEW DATE: 06-17 Dec 2021

Other Events

Quarterly PhD & PostDoc Meeting
15 Apr 2021, 10:00-11:30h