ITN Newsletter – June/July 2022

ITN Newsletter – June/July 2022

There has been an extension of the COST Action for 6 months. So to all of you who always wanted to apply for an STSM but were always too late: this is your chance ! There is a change in dates for NACTI this summer: 1-4 August 2022. The newsletter is on holiday and will only return at the end of August. Have a nice summer!

Dear all,

there has been an extension of the COST Action for 6 months. So to all of you who always wanted to apply for an STSM but were always too late: this is your chance !

There is a change in dates for NACTI this summer: 1-4 August 2022.

The newsletter is on holiday and will only return at the end of August. Have a nice summer.

Your editorial team


Short Term Scientific Missions – apply now !!
Mobility for young and not so young researchers, between 1 week and 3 months, the COST Action can financially support your stay. Details can be found on the website at



QCMC, the International Conference on Quantum Communication, Measurement, and Computing, will finally take place in July in Lisbon after a two-year delay: 11-15 July 2022. Details.

27th International Conference on Atomic Physics (ICAP) in Toronto, Canada, 17-22 July 2022 LINK Registration is OPEN!

Nacti 2022 will be held from 1-4 August at Duke University. Registration details coming soon. LINK

Cold and Controlled Molecules and Ions (CCMI) 2022 conference will be held at Durham University in the UK from 4-9 September, 2022

13th International Workshop on Non-Neutral Plasmas (originally scheduled for 2020 and postponed due to the pandemic) to be held in Milano, Italy, September 19-22, 2022. LINK   

The 8th International Conference on Trapped Charged Particles and Fundamental Physics (TCP 2022) will take place in Glashütten, Germany on September 25-30, 2022.

International Conference on “Quantum sensors and tests of new physics” October 5th-7th 2022 in Hotel Wienecke XI, Hannover (Germany). Details

Joint International Conference of IMEKO TC11 & TC24 (TC11-Technical Committee for Testing, Inspection and Certification, and TC 24-Technical Committee on Chemical Measurements) from 17-20.10.2022 in Dubrovnik, Croatia. Details

25th ICOLS, Estes Park, Colorado/USA, June 2023

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” ( Fridays, 7pm (UTC)

The “Quantum Science Seminar” (  on Thursdays, 5 pm


A postdoc position in Waterloo, Canada, to work on the realization of multi-level qudit primitives in Ba+. Please contact Crystal Senko for more information.

A postdoc position in Waterloo, Canada, for the QuantumIon project, to work on the realization of a Ba-133 qubit register in a chip trap with individual optical controls. Please contact Crystal Senko or Rajibul Islam for more information.

A PhD position is open in quantum technologies focusing on the design of ion trap quantum processors in the group of Christian Ospelkaus at the Leibniz University of Hannover, Germany. Details
Postdoc position at TRIUMF in Vancouver, Canada, with the francium laser trap facility. Please contact Gerald Gwinner or check for details
A PhD position available in the field of “Numerical methods for open quantum systems with long-range interactions” with Igor Lesanowsky, Univ Tübingen, Germany. Details
Postdoctoral Research Associate and PhD positions are available on quantum simulation and sensing with large beryllium ion crystals at the University of Sydney. For details please contact Robert Wolf Details are here
A postdoctoral position is available in the positron group (, Physics Department, University of California San Diego, to study vortex dynamics in trapped electron plasmas. Please contact Cliff Surko for further details.
A postdoctoral position is available at the University of Liverpool to work on cold and controlled ion-radical collisions. Please contact Brianna Heazlewood for further details.
A postdoc position in Birmingham to work on the realisation of a system for cooling and trapping highly charged ions of Californium. Details or contact Giovanni Barontini
A “junior professor” position (chaire de professeur junior) is opening at ENSMM and FEMTO-ST. It is a 5-year tenure track position leading to a University professor position. The profile is available here (in French), please contact for any question.
PhD position at Imperial College London to develop tabletop dark matter detectors using quantum sensors. Details

PhD position at University of Sussex in Cavity-QED with multi-species ion crystals in the group of M. Keller. Details

Postdoc position in the Swansea team at CERN at the ALPHA antihydrogen experiment. Details
You can also find postdoc positions in frequency metrology, cold atoms and quantum information


Please sent information about your publications to

A deterministic single ion fountain
Felix Stopp, Henri Lehec and Ferdinand Schmidt-Kaler
Quantum Sci. Technol. 7 034002 (2022)

Changes in electric field noise due to thermal transformation of a surface ion trap
Maya Berlin-Udi, Clemens Matthiesen, P. N. Thomas Lloyd, Alberto M. Alonso, Crystal Noel, Benjamin Saarel, Christine A. Orme, Chang-Eun Kim, Art J. Nelson, Keith G. Ray, Vincenzo Lordi, and Hartmut Häffner
Phys. Rev. B 106, 035409 (2022)

Characterizing topological excitations of a long-range Heisenberg model with trapped ions
Stefan Birnkammer, Annabelle Bohrdt, Fabian Grusdt, and Michael Knap
Phys. Rev. B 105, L241103 (2022)

Closed-loop optimization of fast trapped-ion shuttling with sub-quanta excitation
Jonathan D. Sterk, Henry Coakley, Joshua Goldberg, Vincent Hietala, Jason Lechtenberg, Hayden McGuinness, Daniel McMurtrey, L. Paul Parazzoli, Jay Van Der Wall & Daniel Stick
npj Quantum Information volume 8, Article number: 68 (2022)

Engineering an effective three-spin Hamiltonian in trapped-ion systems for applications in quantum simulation
Bárbara Andrade, Zohreh Davoudi, Tobias Graß, Mohammad Hafezi, Guido Pagano and Alireza Seif
Quantum Sci. Technol. 7 034001 (2022)

Experimental Bayesian Calibration of Trapped-Ion Entangling Operations
Lukas Gerster, Fernando Martínez-García, Pavel Hrmo, Martin W. van Mourik, Benjamin Wilhelm, Davide Vodola, Markus Müller, Rainer Blatt, Philipp Schindler, and Thomas Monz
PRX Quantum 3, 020350 (2022)

Fabrication of surface ion traps with integrated current carrying wires enabling high magnetic field gradients
Martin Siegele-Brown, Seokjun Hong, Foni Raphaël Lebrun-Gallagher, Samuel James Hile, Sebastian Weidt and Winfried Karl Hensinger
Quantum Sci. Technol. 7 034003 (2022)

High efficiency focusing double-etched SiN grating coupler for trapped ion qubit manipulation
Mizuki Shirao, Daniel Klawson, Sara Mouradian and Ming C. Wu
Jpn. J. Appl. Phys. 61 SK1002 (2022)

High-intensity laser experiments with highly charged ions in a Penning trap
S Ringleb, M Kiffer, N Stallkamp, S Kumar, J Hofbrucker, B Reich, B Arndt, G Brenner, M Ruiz-Lopéz, S Düsterer, Show full author list
Phys. Scr. 97 084002 (2022)

Homonuclear ion-atom collisions: Application to Li+−Li
N. Joshi, M. Niranjan, A. Pandey, Olivier Dulieu, Robin Côté, and S. A. Rangwala
Phys. Rev. A 105, 063311 (2022)

Industrially microfabricated ion trap with 1 eV trap depth
S Auchter, C Axline, C Decaroli, M Valentini, L Purwin, R Oswald, R Matt, E Aschauer, Y Colombe, P Holz, T Monz, R Blatt, P Schindler, C Rössler and J Home
Quantum Sci. Technol. 7 035015 (2022)

Limits on atomic qubit control from laser noise
Matthew L. Day, Pei Jiang Low, Brendan White, Rajibul Islam & Crystal Senko
npj Quantum Information volume 8, Article number: 72 (2022)

Long-Range Ising Interactions Mediated by λϕ4 Fields: Probing the Renormalization of Sound in Crystals of Trapped Ions
G. Martín-Vázquez, G. Aarts, M. Müller, and A. Bermudez
PRX Quantum 3, 020352 (2022)

Low-overhead fault-tolerant quantum computing using long-range connectivity
SCIENCE ADVANCES 20 May 2022, Vol 8, Issue 20 (2022)

Measurement of the bound-electron g-factor difference in coupled ions
Tim Sailer, Vincent Debierre, Zoltán Harman, Fabian Heiße, Charlotte König, Jonathan Morgner, Bingsheng Tu, Andrey V. Volotka, Christoph H. Keitel, Klaus Blaum & Sven Sturm
Nature volume 606, pages 479–483 (2022)

Mirror Image Pinpoints a Nanoparticle’s Position
Rachel Berkowitz
June 28, 2022• Physics 15, s89 (2022)

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

Observation of supersymmetry and its spontaneous breaking in a trapped ion quantum simulator
M.-L. Cai, Y.-K. Wu, Q.-X. Mei, W.-D. Zhao, Y. Jiang, L. Yao, L. He, Z.-C. Zhou & L.-M. Duan
Nature Communications volume 13, Article number: 3412 (2022)

Optimization and implementation of a surface-electrode ion trap junction
Chi Zhang, Karan Mehta and Jonathan P Home
New J. Phys. (2022)

Parallel Electromagnetically Induced Transparency near Ground-State Cooling of a Trapped-Ion Crystal
Jie Zhang, Man-Chao Zhang, Yi Xie, Chun-Wang Wu, Bao-Quan Ou, Ting Chen, Wan-Su Bao, Paul Haljan, Wei Wu, Shuo Zhang, and Ping-Xing Chen
Phys. Rev. Applied 18, 014022 (2022)

Position Measurement of a Levitated Nanoparticle via Interference with Its Mirror Image
Lorenzo Dania, Katharina Heidegger, Dmitry S. Bykov, Giovanni Cerchiari, Gabriel Araneda, and Tracy E. Northup
Phys. Rev. Lett. 129, 013601 (2022)

Quantum Non-Gaussianity of Multiphonon States of a Single Atom
L. Podhora, L. Lachman, T. Pham, A. Lešundák, O. Číp, L. Slodička, and R. Filip
Phys. Rev. Lett. 129, 013602 (2022)

Quantum Technologies Need a Quantum Energy Initiative
Alexia Auffèves
PRX Quantum 3, 020101 (2022

Robust polarization gradient cooling of trapped ions
Wenbing Li, Sebastian Wolf, Lukas Klein, Dmitry Budker, Christoph E Düllmann and Ferdinand Schmidt-Kaler
New J. Phys. 24 043028 (2022)

Single-qubit universal classifier implemented on an ion-trap quantum device
Tarun Dutta, Adrián Pérez-Salinas, Jasper Phua Sing Cheng, José Ignacio Latorre, and Manas Mukherjee
Phys. Rev. A 106, 012411 (2022)

Tensor-network discriminator architecture for classification of quantum data on quantum computers
Michael L. Wall, Paraj Titum, Gregory Quiroz, Michael Foss-Feig, and Kaden R. A. Hazzard
Phys. Rev. A 105, 062439 (2022)

Tiny isotopic difference tests standard model of particle physics
Gerald Gwinner & Roshani Silwal
15 June 2022

Unresolved sideband photon recoil spectroscopy of molecular ions
Emilie H. Clausen, Vincent Jarlaud, Karin Fisher, Steffen Meyer, Cyrille Solaro, and Michael Drewsen
Phys. Rev. A 105, 063709 (2022)


Backend compiler phases for trapped-ion quantum computers
Tobias Schmale, Bence Temesi, Alakesh Baishya, Nicolas Pulido-Mateo, Ludwig Krinner, Timko Dubielzig, Christian Ospelkaus, Hendrik Weimer, Daniel Borcherding

Coherent states for trapped ions. Applications in quantum optics and precision measurements
Bogdan M. Mihalcea

Coherent transfer of the transverse momentum of an optical vortex beam to the motion of a single trapped ion
Felix Stopp, Maurizio Verde, Milton Katz, Martin Drechsler, Christian T. Schmiegelow, Ferdinand Schmidt-Kaler

Constrained Quantum Optimization for Extractive Summarization on a Trapped-ion Quantum Computer
Pradeep Niroula, Ruslan Shaydulin, Romina Yalovetzky, Pierre Minssen, Dylan Herman, Shaohan Hu, Marco Pistoia

Copula-based Risk Aggregation with Trapped Ion Quantum Computers
Daiwei Zhu, Weiwei Shen, Annarita Giani, Saikat Ray Majumder, Bogdan Neculaes, Sonika Johri

Crosstalk Suppression in Individually Addressed Two-Qubit Gates in a Trapped-Ion Quantum Computer
Chao Fang, Ye Wang, Shilin Huang, Kenneth R. Brown, Jungsang Kim

Designing Filter Functions of Frequency-Modulated Pulses for High-Fidelity Two-Qubit Gates in Ion chains
Mingyu Kang, Ye Wang, Chao Fang, Bichen Zhang, Omid Khosravani, Jungsang Kim, Kenneth R. Brown

Efficient motional-mode characterization for high-fidelity trapped-ion quantum computing
Mingyu Kang, Qiyao Liang, Ming Li, Yunseong Nam

Experimental single-setting quantum state tomography
Roman Stricker, Michael Meth, Lukas Postler, Claire Edmunds, Chris Ferrie, Rainer Blatt, Philipp Schindler, Thomas Monz, Richard Kueng, Martin Ringbauer

Fast and high-yield fabrication of axially symmetric ion-trap needle electrodes via two step electrochemical etching
Nikhil Kotibhaskar, Noah Greenberg, Sainath Motlakunta, Chung-You Shih, Rajibul Islam

Geometries and fabrication methods for 3D printing ion traps
A. Quinn, M. Brown, T. J. Gardner, D. T. C. Allcock

Heating rate measurement and characterization of a prototype surface-electrode trap for optical frequency metrology
Thomas Lauprêtre, Bachir Achi, Lucas Groult, Yann Kersalé, Marion Delehaye, Moustafa Abdel Hafiz, Clément Lacroûte

Ion Trap Long-Range XY Model for Quantum State Transfer and Optimal Spatial Search
Dylan Lewis, Leonardo Banchi, Yi Hong Teoh, Rajibul Islam, Sougato Bose

Individual addressing of trapped ion qubits with geometric phase gates
R. T. Sutherland, R. Srinivas, D. T. C. Allcock

Laser-Induced Fluorescence Spectroscopy (LIFS) of Trapped Molecular Ions in Gas-phase
Hemanth Dinesan, S. Sunil Kumar

Learning Quantum Systems
Valentin Gebhart, Raffaele Santagati, Antonio Andrea Gentile, Erik Gauger, David Craig, Natalia Ares, Leonardo Banchi, Florian Marquardt, Luca Pezze’, Cristian Bonato

Multi-programming Cross Platform Benchmarking for Quantum Computing Hardware
Siyuan Niu, Aida Todri-Sanial

Native qudit entanglement in a trapped ion quantum processor
Pavel Hrmo, Benjamin Wilhelm, Lukas Gerster, Martin W. van Mourik, Marcus Huber, Rainer Blatt, Philipp Schindler, Thomas Monz, Martin Ringbauer

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

>b>Observation of Non-Markovian Spin Dynamics in a Jaynes-Cummings-Hubbard Model using a Trapped-Ion Quantum Simulator
B. -W. Li, Q. -X. Mei, Y. -K. Wu, M. -L. Cai, Y. Wang, L. Yao, Z. -C. Zhou, L. -M. Duan

Probing finite-temperature observables in quantum simulators with short-time dynamics
Alexander Schuckert, Annabelle Bohrdt, Eleanor Crane, Michael Knap

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

Quantum control methods for robust entanglement of trapped ions
Christophe H. Valahu, Iason Apostolatos, Sebastian Weidt, Winfried K. Hensinger

Quantum non-Gaussianity of light and atoms
Lukáš Lachman, Radim Filip

Realizing quantum speed limit in open system with a PT-symmetric trapped-ion qubit
Pengfei Lu, Teng liu, Yang Liu, Xinxin Rao, Qifeng Lao, Hao Wu, Feng Zhu, Le Luo

Second-order Doppler frequency shifts of trapped ions in a linear Paul trap
S. N. Miao, J. W. Zhang, Y. Zheng, H. R. Qin, N. C. Xin, Y. T. Chen, J. Z. Han, L. J. Wang

Simulations of Frustrated Ising Hamiltonians with Quantum Approximate Optimization
Phillip C. Lotshaw, Hanjing Xu, Bilal Khalid, Gilles Buchs, Travis S. Humble, Arnab Banerjee

Spectroscopy and ion thermometry of C−2 using laser-cooling transitions
Markus Nötzold, Robert Wild, Christine Lochmann, Roland Wester

Spectroscopic Characterization of the Quantum Linear-Zigzag Transition in Trapped Ions
J. Zhang, B. T. Chow, S. Ejtemaee, P. C. Haljan

Synthesis of and compilation with time-optimal multi-qubit gates
Pascal Baßler, Matthias Zipper, Christopher Cedzich, Markus Heinrich, Patrick Huber, Michael Johanning, Martin Kliesch

Test of Causal Non-Linear Quantum Mechanics by Ramsey Interferometry on the Vibrational Mode of a Trapped Ion
Joseph Broz, Bingran You, Sumanta Khan, Hartmut Haeffner, David E. Kaplan, Surjeet Rajendran

Three-laser coherent population trapping in a multi-lambda system: theory, experiment and applications
Nicolás Nuñez Barreto, Martin Drechsler, Christian Tomás Schmiegelow

Transport of multispecies ion crystals through a junction in an RF Paul trap
William Cody Burton, Brian Estey, Ian M. Hoffman, Abigail R. Perry, Curtis Volin, Gabriel Price

Ultracold ion-atom experiments: cooling, chemistry, and quantum effects
Rianne S. Lous, Rene Gerritsma

Copyright 2022 ITN | Published on behalf of the COST Action Trapped Ions: Progress in classical and quantum applications
Editorial team: Alejandro Bermudez, Martina Knoop

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