DQ-mat Newsletter #12 (Jul 2022)

Dear DQ-mat members,

This past summer semester saw a number of great colloquia, block lectures, and group meetings, most of which were held in person and in hybrid participation. We thank all of you for your contributions and interest in these efforts, which made their success possible. Last semester, the SFB Colloquia were held in collaboration with the "Seminar on Precision Physics and Fundamental Symmetries", expanding not only the audience for the talks but also the international visibility of the SFB DQ-mat.

In autumn, we can look forward to a number of further events of the SFB: Already on 8 September, the SFB General Assembly will take place, to which we cordially invite all members once again. On this day, there will be a full-day scientific program with a poster session and talks, for which we ask for proposals from PIs/PostDocs/Doctoral students! A detailed program for the DQ-mat retreat on September 8 will be sent out at a later date.

Furthermore, the conference "Quantum sensors and tests of new physics", organized by the SFB, will take place from October 4-7 at the Hotel Wienecke XI in Hannover, for which we could win a number of top-class speakers. In the winter term the program of the SFB colloquium and the block lectures will be continued.

Many of you will be on their way to their well-deserved summer vacation or will already receive this newsletter there. We wish you all a relaxing summer vacation and look forward to the next meetings in fall!

Piet Schmidt, Klemens Hammerer, Malte Niemann, Christian Engel

Funding

Applications for lump sum funds
DQ-mat receives lump sum funds of 100.000 € per year to cover publication costs, foster public outreach, and to support new project ideas. Therefore, we want to encourage you to propose new project ideas that complement ongoing activities within the SFB. We have two categories of projects in mind:

1. Larger projects that may become part of the third funding period, ideally involving more than one SFB PI and strengthening one of the core SFB topics. They should be proposed by PIs.
2. Smaller projects in which an interesting aspect (that was not part of the original proposal) of an existing project deserves further investigation, since it may become relevant for the SFB. These projects can be proposed by PhD students, PostDocs, or PIs.

You will find a simple template for the proposals in our Seafile cloud.

Applications will be reviewed in a rolling review scheme by the DQ-mat board. Hence, applications can be sent to Malte Niemann (niemann@iqo.uni-hannover.de) at any time. If you have questions concerning the application or whether you idea is suitable for funding via lump sum funds, contact Malte as well.

Jour Fixe - Winter Semester 22/23

Colloquia

20.10. Tilman Pfau, Universität Stuttgart
03.11. Kilian Singer, Universität Kassel
17.11. Leticia Taruell, Institut de Ciències Fotòniques (ICFO)
01.12. Hartmut Grote, Cardiff University
12.01. Onur Hosten, Institute of Science and Technology Austria

Block lectures

tba  Antoine Browaeys, Institut d’Optique Graduate School, Paris
tba  Tracy Northrup, Universität Innsbruck
tba  Elina Fuchs, Leibniz Universität und PTB

Visit the DQ-mat webpage for further informations.

Online Seminars

Seminar on Precision Physics and Fundamental Symmetries
The virtual seminar will address specific topics of the fields of precision measurements, tests of fundamental symmetries and quantum information
Thursdays at various times

Quantum Science Seminar
Weekly seminar on Quantum Science for an international audience that is broadcast via live streaming.
Every Thursday at 5 pm CEST

Virtual AMO Seminar (VAMOS)
Fridays at 3 pm EST / 12 pm PST

Scientific Events

Young Atom Opticians Conference 2022
31 Jul-05 Aug 2022, Stuttgart (Germany)

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

Next Generation Quantum Computing
29-30 Aug 2022, Yokohama (Japan)

Solvay Workshop on Quantum Simulation
29-31 Aug 2022, Brussels (Belgium)

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

20th International Conference on the Physics of Highly Charged Ions
29 Aug-03 Sep 2022, Matsue (Japan)

NanoQI'22 Summerschool - Nanotechnology meets Quantum Information
30 Aug-02 Sep 2022, Donostia-San Sebastian (Spain)

FOMO 2022 Summer School and Conference
12-16 Sep and 19-23 Sep 2022, Trieste (Italy)

EQAI 2022 European Summer School on Quantum AI
12-16 Sep, Udine (Italy)

8th International Conference on Trapped Charged Particles and Fundamental Physics
25-30 Sep 2022, Glashütten (Germany)

Quantum sensors and tests of new physics
04-07 Oct 2022, Hannover (Germany)

ICIOP 2020/2021 - International Conference on Integrated Quantum Photonics
05-07 Oct 2022, Copenhagen (Denmark)

Quantum Innovation 2022 - International Symposium on Quantum Science, Technology and Innovation
28-30 Nov 2022, Tokyo (Japan), Virtual Conference

Recent DQ-mat publications

Tobias Aßmann, Fabio Di Pumpo, Enno Giese
Light-pulse atom interferometry with entangled atom-optical elements
Phys. Rev. Research 4, 013115 (2022)

J. Berrocal, E. Altozano, F. Domínguez, M. J. Gutiérrez, J. Cerrillo, F. J. Fernández, M. Block, C. Ospelkaus, and D. Rodríguez
Formation of two-ion crystals by injection from a Paul-trap source into a high-magnetic-field Penning trap
Phys. Rev. A 105, 052603 (2022)

Fabio Di Pumpo, Alexander Friedrich, Andreas Geyer, Christian Ufrecht, Enno Giese
Light propagation and atom interferometry in gravity and dilaton fields
Phys. Rev. D 105, 084065 (2022)

M Duwe, G Zarantonello, N Pulido-Mateo, H Mendpara, L Krinner, A Bautista-Salvador, N V Vitanov, K Hammerer, R F Werner, C Ospelkaus
Numerical optimization of amplitude-modulated pulses in microwave-driven entanglement generation
Quantum Sci. Technol. 7 045005 (2022)

P. Głowacki E. Peik
Fluorescence properties of ions adsorbed from aqueous solutions on fused silica and CaF₂ - Test cases of Eu³⁺ and Tb³⁺
Journal of Luminescence 247, 118865 (2022)

Jens Jenewein, Sabrina Hartmann, Albert Roura, Enno Giese
Bragg-diffraction-induced imperfections of the signal in retroreflective atom interferometers
Phys. Rev. A 105, 063316 (2022)

Laura Niermann, Tobias J. Osborne
Holographic networks for (1+1)-dimensional de Sitter space-time
Phys. Rev. D 105, 125009 (2022)

Tim Pistorius, Hendrik Weimer
Variational analysis of driven-dissipative bosonic fields 
Phys. Rev. A 104, 063711 (2021)

Vijay Pal Singh, Hendrik Weimer
Driven-Dissipative Criticality within the Discrete Truncated Wigner Approximation
Phys. Rev. Lett. 128, 200602 (2022)

Kai K. Voges, Philipp Gersema, Torsten Hartmann, Silke Ospelkaus, Alessandro Zenesini
Hyperfine dependent atom-molecule loss analyzed by the analytic solution of few-body loss equations
Phys. Rev. Research 4, 023184 (2022)

New on arXiv from DQ-mat

New bounds on Lorentz violation from a composite pulse method in a trapped ion
Laura S. Dreissen, Chih-Han Yeh, Henning A. Fürst, Kai C. Grensemann, Tanja E. Mehlstäubler

Coupling Quantum Matter and Gravity
Domenico Giulini, André Großardt, Philip K. Schwartz

Real-time capable CCD-based individual trapped-ion qubit measurement
S. Halama, T. Dubielzig, N. Orlowski, C. Torkzaban, C. Ospelkaus

Tomography of a number-resolving detector by reconstruction of an atomic many-body quantum state
Mareike Hetzel, Luca Pezzè, Cebrail Pür, Martin Quensen, Andreas Hüper, Jiao Geng, Jens Kruse, Luis Santos, Wolfgang Ertmer, Augusto Smerzi, Carsten Klempt

Learning of error statistics for the detection of quantum phases
Amit Jamadagni, Javad Kazemi, Hendrik Weimer

An Optical Atomic Clock Based on a Highly Charged Ion
Steven A. King, Lukas J. Spieß, Peter Micke, Alexander Wilzewski, Tobias Leopold, Erik Benkler, Richard Lange, Nils Huntemann, Andrey Surzhykov, Vladimir A. Yerokhin, José R. Crespo López-Urrutia, Piet O. Schmidt

Correlated steady states and Raman lasing in continuously pumped and probed atomic ensembles
Alexander Roth, Klemens Hammerer, Kirill S. Tikhonov

Open Positions

Three Post-Doc positions at the QUEST Institute for Experimental Quantum Metrology of Physikalisch-Technische Bundesanstalt and Leibniz Universität Hannover:

• Scientist with a doctorate (PhD) specializing in the development of a transportable optical ion clock
• Scientist with a doctorate (PhD) in the field of quantum logic spectroscopy of highly charged ions
• Scientist in the field of quantum computing with trapped ions

Research Assistant (PhD position, m/f/d)
The research group of Prof. Dr. Christian Ospelkaus at the Institute of Quantum Optics invites applications for the position of a Research Assistant in quantum technologies focusing on the design of ion trap quantum processors