Foreword

Dear Ion Trappers,
we’d like to draw your attention to an exciting opportunity: Frontiers in Quantum Science and Technology has announced a special issue on “Micromotion in Trapped Ion Systems.” Submissions are now open. For more details and submission guidelines, visit Frontiers in Quantum Science and Technology.
We’re truly grateful for the ongoing engagement from the iontrap community, who keep the conversation lively by sharing their latest news, events, jobs, publications, and editorials. Visit the ITN-Website (https://iontraps.net/) where you can download the current and archived issues and send us your submissions and events directly using the forms. Please continue to send us your thoughts; your contributions make our newsletter vibrant and enriching.

Events

YAO2024 (Young Atom Opticians) conference, organised this year by CESQ at the University of Strasbourg, June 30th to July 5th, 2024. Details

28th Central European Workshop on Quantum Optics (CEWQO),  July 1st – 5th, 2024, in Olomouc, Czech Republic

European Frequency and Time Seminar, is a nonprofit intensive full-week seminar intended to provide education and training with lectures and lab sessions in Besancon, France, from July 1-5, 2024. Details

Early Career Conference in Trapped Ions (ECCTI) 2024
ECCTI is intended to connect a broad community with very diverse scientific goals with common technical challenges. The event will have a focus on Atomic Clocks, Quantum Information & Computation, Quantum Simulation, Quantum Technologies, Antimatter Physics, Precision & Molecular Spectroscopy, and Nuclear Physics. The event will take place from July 7-12, 2024, at the Viktor-Franz-Hess Haus in Austria. Details

ICAP 2024: The 28th International Conference on Atomic Physics, July 14-19, 2024 at the Imperial College, London. Details

QSim 2024, the 2nd Annual Conference on Quantum Simulation in Rhode Island, USA, August 12-16,  2024. The conference will be preceded by a 3-day summer school from August 9-11 at the same location. The focus of the summer school will be on many-body systems, combining both theoretical and numerical techniques with examples from quantum hardware experiments. Details

NIST Time and Frequency Seminar covers precision clocks and oscillators, atomic frequency standards, rf and optical synchronization, optical oscillators, quantum information, optical cooling and heating; making precise frequency, time, phase-noise, and jitter measurements; and establishing measurement accuracy and traceability. It will be held will be held at the Boulder, CO campus from August 13-15 2024. Details

15th International Symposium on Electron Beam Ion Sources and Traps (EBIST2024) will be held on 27-30 August 2024 at the Jan Kochanowski University, Kielce, Poland. Details

North American Conference on Trapped Ions (NACTI), UCLA, August 13-16, 2024. Details

IMEKO 2024, 26-29 August 2024, Hamburg. Details

EBIS 2024 in Kielce in the Holy Cross Mountains (Poland) from August 27 to 30, 2024. Details

HCI-21 Sept 1 – Sept 6, 2024 in Amsterdam. Details

QTech 2024: Quantum Technology International conference 2024. This third edition will be held in Berlin, from September 10 to September 12 2024. Detail

ECAMP15 (15th European Conference on Atoms Molecules and Photons), a triennial conference series, will take place in Innsbruck, Austria from June 30th to July 4th, 2025. Details

ECTI 2025, Save the Date: September 8 – 12, 2025 in the Netherlands. More information to follow.

The Greenhorn Meeting is a conference, which targets junior researchers (those who are within the first-half of PhD or in the last year of their masters) working in the research areas of quantum optics, nano optics, atomic physics and ultra-cold atomic gases. It will take place fom September 10th – 12th in Siegen. Details

817 Heraeus seminar on Precision Atomic Physics Experiments to Probe for New Physics“, 23.-27.9.2024 in Bad Honnef. Details

Quantum Physics with Trapped Particles at Monte Verita, close to Ascona, Switzerland, on October 13-18, 2024. Details

Atomic Clock Ensemble in Space (ACES) Workshop, ESTEC, the Netherlands from the 23rd to the 25th of October 2024 Details

Online seminars

Virtual Seminar on Precision Physics and Fundamental Symmetries – an initiative for the precision physics and quantum information community,  every Thursday   LINK

The “Virtual AMO Seminar” (www.amo-seminar.com): Fridays, 7pm (UTC)

The “Quantum Science Seminar” (http://quantumscienceseminar.com/):  on Thursdays, 5 pm

Jobs

A fully funded, 3-year PhD position is available in the laboratory of Metrology, trapped ions and cold molecules at the European Center for Quantum Sciences (CESQ) in Strasbourg, France. This PhD topic concerns the trapping and cooling of dipolar molecular ions as well as their spectroscopic characterization using a frequency-comb laser. More details can be found in attachment or on the Euraxess platform.
Contact: Cyrille Solaro (solaro@unistra.fr)
Details

Several PostDoc and PhD positions available at PTB in Braunschweig and Leibniz University Hannover in the Quantum Logic Spectroscopy Group of Piet Schmidt . Topics include laboratory and transportable aluminium ion clocks, multi-ion calcium clock using dynamical decoupling and entanglement, as well as highly charged ion clocks.
Contact: Dr. Piet Schmidt (Piet.Schmidt@quantummetrology.de)

PhD positions available at the University of Padova (Italy) for a new trapped ion experiment. Potential research directions include quantum simulations on ion strings, interfacing of ion traps with photonics chips, and development of surface electrode traps with integrated photonics.
Contact: Dr. Carmelo Mordini (carmelo.mordini@unipd.it)
Details

PhD and postdoc positions available in the group of Tanja Mehlstäubler at PTB, working on optical clocks based on trapped ion Coulomb crystals. Topics include new interrogation protocols for multi-ensemble clocks, quantum-enhanced clock operation, ground-state cooling of mixed-species Coulomb crystals and tests of fundamental physics with precision spectroscopy.
Contact: Prof. Dr. Tanja Mehlstäubler (tanja.mehlstaeubler@quantummetrology.de).
Details

The research group of C. Ospelkaus at the University of Hannover is looking for a postdoctoral research associate on their Penning trap experiment, which aims to implement quantum logic spectroscopy of (anti-)protons for tests of the fundamental CPT symmetry as part of the BASE collaboration.
Contact: Dr. Christian Ospelkaus (christian.ospelkaus@iqo.uni-hannover.de)

A postdoc position is available at the Old Dominion University in Norfolk, Virginia, USA on a project trapping lutetium ions for precision measurements.
Contact: Dr. Matt Grau (mgrau@odu.edu).

two openings for PhD positions in the Molecular Systems group headed by Roland Wester at the University of Innsbruck. One position is part of a research project in collaboration with the University of Bordeaux on classical versus quantum effects in three-body collisions of cold trapped ions, funded through the Austrian Science Fund (FWF). The second position is part of a collaborative project on controlling
trapped charged nanoparticles, funded through the Austrian excellence cluster QuantA.
Contact: Prof. Dr. Roland Wester (roland.wester@uibk.ac.at).
Details

Multiple postdoc positions are available in the NIST Ion Storage Group in Colorado, USA. Topics include quantum simulation and sensing in a Penning trap, trapped-ion quantum computing, trapped-ion optical clocks, and quantum state control and precision spectroscopy of single molecular ions.
Contact: John Bollinger or any of the NIST Ion Storage group staff
Details

The Imperial College Particle Physics Group has a postgraduate studentship available to work on laser measurements of cold exotic helium atoms that contain antiprotons at the new ELENA facility of CERN in Geneva. This allows us to probe the matter-antimatter symmetry and determine the mass ratio between an antiproton and electron. We hope to be relatively flexible with regards to the exact PhD topic depending on the candidate’s interests. The studentship covers a maintenance bursary similar to standard STFC studentships.
Contact: m.hori@imperial.ac.uk

The Ion trap systems team at Infineon is looking for an ion trap development engineer.  This is a full-time, permanent position in Austria with an entry level of 3-5 years.
Details

Publications

Please send information about your publications to iontrap.newsletter@gmail.com

A self-referenced optical phase noise analyzer for quantum technologies
R. Freund, Ch. D. Marciniak, T. Monz
Journal: Review of Scientific Instruments
Rev. Sci. Instrum. 95, 063005 (2024)

Bilayer ion trap design for 2D arrays
Gavin N Nop, Jonathan D H Smith, Daniel Stick and Durga Paudyal
2024 Quantum Sci. Technol. 9 035015

Chiral quantum heating and cooling with an optically controlled ion
Jin-Tao Bu, Jian-Qi Zhang, Ge-Yi Ding, Jia-Chong Li, Jia-Wei Zhang, Bin Wang, Wen-Qiang Ding, Wen-Fei Yuan, Liang Chen, Qi Zhong, Ali Keçebaş, Şahin K. Özdemir, Fei Zhou, Hui Jing & Mang Feng Light: Science & Applications volume 13, Article number: 143 (2024)

Comparison of continuous and pulsed sideband cooling on an electric quadrupole transition
Evan C. Reed, Lu Qi, and Kenneth R. Brown
Phys. Rev. A 110, 013123 (2024)

Deterministic preparation of a dual-species two-ion crystal
Maximilian J. Zawierucha, Till Rehmert, Jonas Keller, Tanja E. Mehlstäubler, Piet O. Schmidt, and Fabian Wolf
Phys. Rev. A 110, 013107 (2024)

Electroweak Nuclear Properties from Single Molecular Ions in a Penning Trap
J. Karthein, S. M. Udrescu, S. B. Moroch, I. Belosevic, K. Blaum, A. Borschevsky, Y. Chamorro, D. DeMille, J. Dilling, R. F. Garcia Ruiz, N. R. Hutzler, L. F. Pašteka, and R. Ringle
Phys. Rev. Lett. 133, 033003 (2024)

Exploring Quantum Mpemba Effects
Ulrich Warring
Physics 17, 105, July 1, 2024

Fault-tolerant one-bit addition with the smallest interesting color code
YANG WANG SELWYN SIMSEK THOMAS M. GATTERMAN JUSTIN A. GERBER KEVIN GILMORE DAN GRESH NATHAN HEWITT CHANDLER V. HORST MITCHELL MATHENY TANNER MENGLE BRIAN NEYENHUIS BEN CRIGER
SCIENCE ADVANCESVOL. 10, NO. 2919,

Image-Current Mediated Sympathetic Laser Cooling of a Single Proton in a Penning Trap Down to 170 mK Axial TemperatureC. Will, M. Wiesinger, P. Micke, H. Yildiz, T. Driscoll, S. Kommu, F. Abbass, B. P. Arndt, B. B. Bauer, S. Erlewein, M. Fleck, J. I. Jäger, B. M. Latacz, A. Mooser, D. Schweitzer, G. Umbrazunas, E. Wursten, K. Blaum, J. A. Devlin, C. Ospelkaus, W. Quint, A. Soter, J. Walz, C. Smorra, and S. Ulmer (BASE Collaboration)
Phys. Rev. Lett. 133, 023002 (2024) –

Implementing fault-tolerant non-Clifford gates using the [[8,3,2]] color code
Daniel Honciuc Menendez, Annie Ray, and Michael Vasmer
Phys. Rev. A 109, 062438 (2024) –

Individual Addressing and State Readout of Trapped Ions Utilizing Radio-Frequency Micromotion
Nathan K. Lysne, Justin F. Niedermeyer, Andrew C. Wilson, Daniel H. Slichter, and Dietrich Leibfried
Phys. Rev. Lett. 133, 033201 (2024)

Inverse Mpemba Effect Demonstrated on a Single Trapped Ion Qubit
Shahaf Aharony Shapira, Yotam Shapira, Jovan Markov, Gianluca Teza, Nitzan Akerman, Oren Raz, and Roee Ozeri
Phys. Rev. Lett. 133, 010403 (2024)

Josephson voltage standards as ultra-stable low-noise voltage sources for precision Penning-trap experiments
A. Kaiser, S. Dickopf, M. Door, R. Behr, U. Beutel, S. Eliseev, A. Kaushik, K. Kromer, M. Müller, L. Palafox, S. Ulmer, A. Mooser, K. Blaum
Appl. Phys. Lett. 124, 224002 (2024)

Lift-connected surface codes
Josias Old, Manuel Rispler and Markus Müller
2024 Quantum Sci. Technol. 9 045012

Measurement of infrared magic wavelength for an all-optical trapping of 40Ca+ ion clock
Yao Huang, Miao Wang, Zheng Chen, Chengbin Li, Huaqing Zhang, Baolin Zhang, Liyan Tang, Tingyun Shi, Hua Guan and Ke-Lin Gao
2024 New J. Phys. 26 043021

Multi-ion Frequency Reference Using Dynamical Decoupling
Lennart Pelzer, Kai Dietze, Víctor José Martínez-Lahuerta, Ludwig Krinner, Johannes Kramer, Fabian Dawel, Nicolas C. H. Spethmann, Klemens Hammerer, and Piet O. Schmidt
Phys. Rev. Lett. 133, 033203 (2024) –

Quantum computation with logical gates between hot systems
Ferran Riera-Sàbat, Pavel Sekatski, and Wolfgang Dür
Phys. Rev. Research 6, 033101 (2024)

Observing the Quantum Mpemba Effect in Quantum Simulations
Lata Kh. Joshi, Johannes Franke, Aniket Rath, Filiberto Ares, Sara Murciano, Florian Kranzl, Rainer Blatt, Peter Zoller, Benoît Vermersch, Pasquale Calabrese, Christian F. Roos, and Manoj K. Joshi
Phys. Rev. Lett. 133, 010402 (2024)

Programmable XY-type couplings through parallel spin-dependent forces on the same trapped ion motional modes
Nikhil Kotibhaskar, Chung-You Shih, Sainath Motlakunta, Anthony Vogliano, Lewis Hahn, Yu-Ting Chen, and Rajibul Islam
Phys. Rev. Research 6, 033038 (2024)

Prospects of a thousand-ion Sn2+ Coulomb-crystal clock with sub-10−19 inaccuracy
David R. Leibrandt, Sergey G. Porsev, Charles Cheung & Marianna S. Safronova
Nature Communications volume 15, Article number: 5663 (2024)

Prospects of nuclear-coupled-dark-matter detection via correlation spectroscopy of I+2 and Ca+
Eric Madge, Gilad Perez, and Ziv Meir
Phys. Rev. D 110, 015008 (2024) –

Quantum gates simulation by ions trapped in a linear Paul trap
Basem R. Kazem, Mezher B. Saleh
AIP Conf. Proc. 3097, 090014 (2024)

Robust and fast microwave-driven quantum logic for trapped-ion qubits
M. A. Weber, M. F. Gely, R. K. Hanley, T. P. Harty, A. D. Leu, C. M. Löschnauer, D. P. Nadlinger, and D. M. Lucas
Phys. Rev. A 110, L010601 (2024)

Synthetic gauge theories based on parametric excitations of trapped ions
Oana Bǎzǎvan, Sebastian Saner, Emanuelle Tirrito, Gabriel Araneda, Raghavendra Srinivas & Alejandro Bermudez
Communications Physics volume 7, Article number: 229 (2024)

Preprints

A Nuclear Interferometer for Ultra-Light Dark Matter Detection
Authors: Hannah Banks, Elina Fuchs, Matthew McCullough

Amplitude-noise-resilient entangling gates for trapped ions
Authors: Nguyen H. Le, Modesto Orozco-Ruiz, Sahra A. Kulmiya, James G. Urquhart, Samuel J. Hile, Winfried K. Hensinger, Florian Mintert

Beyond Energy: Teleporting Current, Charge, and More
Authors: Kazuki Ikeda

Distributed Quantum Computing across an Optical Network Link
Authors: D. Main, P. Drmota, D. P. Nadlinger, E. M. Ainley, A. Agrawal, B. C. Nichol, R. Srinivas, G. Araneda, D. M. Lucas

Dressing trapped ions with integrated wires
Authors: R. Tyler Sutherland

Exactly-solved model of light-scattering errors in quantum simulations with metastable trapped-ion qubits
Authors: Phillip C. Lotshaw, Brian C. Sawyer, Creston D. Herold, Gilles Buchs

Hardware-efficient variational quantum algorithm in trapped-ion quantum computer
Authors: J. -Z. Zhuang, Y. -K. Wu, L. -M. Duan

Hybrid Oscillator-Qubit Quantum Processors: Instruction Set Architectures, Abstract Machine Models, and Applications
Authors: Yuan Liu, Shraddha Singh, Kevin C. Smith, Eleanor Crane, John M. Martyn, Alec Eickbusch, Alexander Schuckert, Richard D. Li, Jasmine Sinanan-Singh, Micheline B. Soley, Takahiro Tsunoda, Isaac L. Chuang, Nathan Wiebe, Steven M. Girvin

Implementation of a scalable universal two-qubit quantum processor with electron and nuclear spins in a trapped ion
Authors: Ji Bian, Teng Liu, Qifeng Lao, Min Ding, Huiyi Zhang, Xinxin Rao, Pengfei Lu, Le Luo

Encoded probabilistic imaginary-time evolution on a trapped-ion quantum computer for ground and excited states of spin qubits
Authors: Hirofumi Nishi, Yuki Takei, Taichi Kosugi, Shunsuke Mieda, Yutaka Natsume, Takeshi Aoyagi, Yu-ichiro Matsushita

Laser Cooling of Radium-225 Ions
Authors: Roy Ready, Haoran Li, Spencer Kofford, Robert Kwapisz, Huaxu Dan, Akshay Sawhney, Mingyu Fan, Craig Holliman, Xiaoyang Shi, Luka Sever-Walter, A. N. Gaiser, J. R. Griswold, A. M. Jayich

Lattices, Gates, and Curves: GKP codes as a Rosetta stone
Authors: Jonathan Conrad, Ansgar G. Burchards, Steven T. Flammia

Microscopic parametrizations for gate set tomography under coloured noise
Authors: P. Viñas, A. Bermudez

Observation of Space-Dependent Rotational Doppler Shifts with a Single Ion Probe
Authors: Nicolás Adrián Nuñez Barreto, Muriel Bonetto, Marcelo Alejandro Luda, Cecilia Cormick, Christian Tomás Schmiegelow

Optical pumping through the Liouvillian skin effect
Authors: De-Huan Cai, Wei Yi, Chen-Xiao Dong

Optimized surface ion trap design for tight confinement and separation of ion chains
Authors: Ilya Gerasin, Nikita Zhadnov, Konstantin Kudeyarov, Ksienia Khabarova, Nikolay Kolachevsky, Ilya Semerikov

Phase-Imaging Ion-Cyclotron-Resonance Mass Spectrometry with the Canadian Penning Trap at CARIBU
Authors: D. Ray, A. A. Valverde, M. Brodeur, F. Buchinger, J. A. Clark, B. Liu, G. E. Morgan, R. Orford, W. S. Porter, G. Savard, K. S. Sharma, X. L. Yan

Quantum control of ion-atom collisions beyond the ultracold regime
Authors: Maks Z. Walewski, Matthew D. Frye, Or Katz, Meirav Pinkas, Roee Ozeri, Michał Tomza

https://arxiv.org/abs/2406.18721
Authors: Michael Fromm, Lucas Katschke, Owe Philipsen, Wolfgang Unger

Resource overheads and attainable rates for trapped-ion lattice surgery
Authors: Hudson Leone, Thinh Le, S. Srikara, Simon Devitt

Scalable, high-fidelity all-electronic control of trapped-ion qubits
Authors: C. M. Löschnauer, J. Mosca Toba, A. C. Hughes, S. A. King, M. A. Weber, R. Srinivas, R. Matt, R. Nourshargh, D. T. C. Allcock, C. J. Ballance, C. Matthiesen, M. Malinowski, T. P. Harty

Scalable improvement of the generalized Toffoli gate realization using trapped-ion-based qutrits
Authors: Anastasiia S. Nikolaeva, Ilia V. Zalivako, Alexander S. Borisenko, Nikita V. Semenin, Kristina P. Galstyan, Andrey E. Korolkov, Evgeniy O. Kiktenko, Ksenia Yu. Khabarova, Ilya A. Semerikov, Aleksey K. Fedorov, Nikolay N. Kolachevsky

Superconducting surface trap chips for microwave-driven trapped ions
Authors: Yuta Tsuchimoto, Ippei Nakamura, Shotaro Shirai, Atsushi Noguchi

The Slow Growth of Entanglement in Long-range Interacting Spins Chains due to Destructive Interference between quasi-Particles
Authors: Peyman Azodi, Herschel A. Rabitz

Thermometry of Trapped Ions Based on Bichromatic Driving
Authors: Xie-Qian Li, Yi Tao, Ting Chen, Wei Wu, Yi Xie, Chun-Wang Wu, Ping-Xing Chen

Towards real-world applications of levitated optomechanics
Authors: Yuanbin Jin, Kunhong Shen, Peng Ju, Tongcang Li

Unitary death of Schrödinger’s cat
Authors: Pavel Stránský, Pavel Cejnar, Radim Filip

Utility of virtual qubits in trapped-ion quantum computers
Authors: Saumya Shivam, Fabian Pokorny, Andres Vazquez-Brennan, Ana S. Sotirova, Jamie D. Leppard, Sophie M. Decoppet, C. J. Ballance, S. L. Sondhi