ITN Newsletter – August 2021

ITN Newsletter – August 2021

Our newsletter has now 1184 subscribers! The statistics says that half of them regularly open the newsletter (and probably even read it !). Do not hesitate to tell interested ion trappers how to subscribe: there is an automated procedure on the website of the COST Action at

Dear all,
some updated information about this ever-growing newsletter, which has now 1184 subscribers. The statistics says that half of them regularly open the newsletter (and probably even read it !). Do not hesitate to tell interested ion trappers how to subscribe: there is an automated procedure on the website of the COST Action at

Your editorial team



Portal for High-Precision Atomic Data and Computation has been released at University of Delaware and is accessible via:



Quantum Optics X Conference, Toruń, Poland, 5 – 11 September 2021

European Conference on Trapped Ions (ECTI), Djurönäset, Sweden, probably October/November 2021 (information coming soon)

Early Career Conference in Trapped Ions 2022, 10th – 14th January 2022, at  CERN, Geneva LINK
The call for abstracts is still open. Deadline 1st October 2021.

14th European Conference on Atoms Molecules and Photons (ECAMP14)  in Vilnius, Lithuania, June 27- July 1, 2022 LINK

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

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

Online seminars

Virtual Seminar on Precision Physics and Fundamental Symmetries 2020
an initiative for the precision physics and quantum information community every Thursday   LINK

The Virtual AMO Seminar ( Fridays, 7pm (UTC) 

The “Quantum Science Seminar” ( Thursdays, 5pm



A Postdoc position at Stockholm University to work on Experimental Quantum Computing with trapped Rydberg Ions. Application deadline 20 September. For more information see the announcement, our webpage, or contact Markus Hennrich.
The Highly Charged Ion Dynamics group (Crespo lab) at the Pfeifer Division of the Max-Planck-Institut für Kernphysik (MPIK) in Heidelberg is seeking a postdoctoral research associate (2 years) starting as soon as possible. Contact: Prof. Dr. José R. Crespo López-Urrutia; Dr. Elwin Dijck
A Postdoctoral Research Associate Position for molecular spectroscopy (up to 5 years, starting from 1.2.22) is available at TU Berlin. For further details, see here, or contact: Otto Dopfer
Two postdoctoral positions in theoretical or experimental AMO Physics at the Centre of AMO Physics – at the University of Warsaw/PL. Deadline of application: September 30, 2021. Details

Postdoc position in Experimental Chemical Physics at JILA and the University of Colorado-Boulder in the group of Heather Lewandowski. Details
Lecturer in the Centre for Cold Matter at Imperial College London. Closing Date 26 Sept 2021. Details

A postdoctoral position at the National Institute of Standards and Technology in Boulder, CO developing compact, autonomous, transportable optical atomic clocks for timescale, astronomy, geodesy, and fundamental physics applications.  For details, contact: David Leibrandt.

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 ().  LINK

Postdoctoral Research Associate and PhD positions are available on quantum control and quantum computation with trapped ion at the University of Sydney. For details please contact Ting Rei Tan (). LINK

You can also find postdoc positions in frequency metrology, cold atoms and quantum information



Please sent informations about your publications to

An ion trap apparatus with high optical access in multiple directions
Ran He, Jin-Ming Cui, Rui-Rui Li, Zhong-Hua Qian, Yan Chen, Ming-Zhong Ai, Yun-Feng Huang, Chuan-Feng Li and Guang-Can Guo
Review of Scientific Instruments 92, 073201 (2021)

An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions
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 and J. R. Crespo López-Urrutia
Review of Scientific Instruments 92, 083203 (2021)

Batch Optimization of Frequency-Modulated Pulses for Robust Two-Qubit Gates in Ion Chains
Mingyu Kang, Qiyao Liang, Bichen Zhang, Shilin Huang, Ye Wang, Chao Fang, Jungsang Kim, and Kenneth R. Brown
Phys. Rev. Applied 16, 024039 (2021)

Benchmarking machine learning algorithms for adaptive quantum phase estimation with noisy intermediate-scale quantum sensors
Nelson Filipe Costa, Yasser Omar, Aidar Sultanov and Gheorghe Sorin Paraoanu
EPJ Quantum Technol.  8: 16 (2021)

C-band single photons from a trapped ion via two-stage frequency conversion
J. Hannegan, U. Saha, J. D. Siverns, J. Cassell, E. Waks and Q. Quraishi
Appl. Phys. Lett. 119, 084001 (2021)

Cross-beam energy transfer saturation by ion trapping-induced detuning
K. L. Nguyen, L. Yin, B. J. Albright, A. M. Hansen, D. H. Froula, D. Turnbull, R. K. Follett and J. P. Palastro
Physics of Plasmas 28, 082705 (2021)

Design and Fabrication of Silicon Gratings for the Optical Addressing of Trapped Ion Qubits
Lim, Yu Dian; Li, Hong Yu; Zhao, Peng; Tao, Jing; Guidoni, Luca; Tan, Chuan Seng
CLEO: Applications and Technology, Paper# JF2G.3 (2021)

Direct observation of trapped ion micromotion and multi-qubits state with a TimePix3cam single-photon sensitive camera
Zhukas, Liudmila A.; Millican, Maverick J.; Svihra, Peter; Nomerotski, Andrei; Blinov, Boris B.
CLEO: Applications and Technology, Paper# JF2G.2 (2021)

Electric-field noise in a high-temperature superconducting surface ion trap
P. C. Holz, K. Lakhmanskiy, D. Rathje, P. Schindler, Y. Colombe, and R. Blatt
Phys. Rev. B 104, 064513 (2021)

Engineering generalized Gibbs ensembles with trapped ions
Florentin Reiter, Florian Lange, Shreyans Jain, Matt Grau, Jonathan P. Home, and Zala Lenarčič
Phys. Rev. Research 3, 033142 (2021)

Equilibration of the planar modes of ultracold two-dimensional ion crystals in a Penning trap
Chen Tang, Athreya Shankar, Dominic Meiser, Daniel H. E. Dubin, John J. Bollinger, and Scott E. Parker
Phys. Rev. A 104, 023325 (2021)

Integrated physics package of micromercury trapped ion clock with 10−14-level frequency stability
Thai M. Hoang, Sang K. Chung, Thanh Le, John D. Prestage, Lin Yi, Robert L. Tjoelker, Sehyun Park, Sung-Jin Park, J. Gary Eden, Christopher Holland and Nan Yu
Appl. Phys. Lett. 119, 044001 (2021)

Investigating the quench dynamics of the bound states in a spin-orbital-coupling system using a trapped ion
Hao-Qing Zhang, Ming-Zhong Ai, Jin-Ming Cui, Yong-Jian Han, Chuan-Feng Li, and Guang-Can Guo
Phys. Rev. A 104, 022213 (2021)

Local measures of dynamical quantum phase transitions
Jad C. Halimeh, Daniele Trapin, Maarten Van Damme, and Markus Heyl
Phys. Rev. B 104, 075130 (2021)

Manipulating phonons of a trapped-ion system using optical tweezers
Yi Hong Teoh, Manas Sajjan, Zewen Sun, Fereshteh Rajabi, and Rajibul Islam
Phys. Rev. A 104, 022420 (2021)

Many-body thermodynamics on quantum computers via partition function zeros
SCIENCE ADVANCES 18 AUG 2021 : EABF2447 (2021)

Measuring Ion Oscillations at the Quantum Level with Fluorescence Light
G. Cerchiari, G. Araneda, L. Podhora, L. Slodička, Y. Colombe, and R. Blatt
Phys. Rev. Lett. 127, 063603 (2021)

Motion analysis of a trapped ion chain by single photon self-interference
G. Cerchiari, G. Araneda, L. Podhora, L. Slodička, Y. Colombe and R. Blatt
Appl. Phys. Lett. 119, 024003 (2021)

Motional Squeezing for Trapped Ion Transport and Separation
R. T. Sutherland, S. C. Burd, D. H. Slichter, S. B. Libby, and D. Leibfried
Phys. Rev. Lett. 127, 083201 (2021)

Nearest centroid classification on a trapped ion quantum computer
Sonika Johri, Shantanu Debnath, Avinash Mocherla, Alexandros SINGK, Anupam Prakash, Jungsang Kim & Iordanis Kerenidis
npj Quantum Information volume 7, Article number: 122 (2021)

New superconducting radio-frequency trap keeps ions ultra-stable
Jaimee-Ian Rodriguez
Scilight 2021, 341106 (2021);

Observation of second- and higher-order electric quadrupole interactions with an atomic ion
Gerard Higgins, Chi Zhang, Fabian Pokorny, Harry Parke, Erik Jansson, Shalina Salim, and Markus Hennrich
Phys. Rev. Research 3, L032032 (2021)

Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals
SCIENCE 06 AUG 2021 : 673-67 (2021)

Quantum enhanced sensing
SCIENCE 06 AUG 2021 : 637-638 (2021)

Quantum simulation of light-front parton correlators
M. G. Echevarria, I. L. Egusquiza, E. Rico, and G. Schnell
Phys. Rev. D 104, 014512 (2021)

Scalable hyperfine qubit state detection via electron shelving in the 2D5/2 and 2F7/2 manifolds in 171Yb+
C. L. Edmunds, T. R. Tan, A. R. Milne, A. Singh, M. J. Biercuk, and C. Hempel
Phys. Rev. A 104, 012606 (2021)

Simulating 2D Effects in Lattice Gauge Theories on a Quantum Computer
Danny Paulson, Luca Dellantonio, Jan F. Haase, Alessio Celi, Angus Kan, Andrew Jena, Christian Kokail, Rick van Bijnen, Karl Jansen, Peter Zoller, and Christine A. Muschik
PRX Quantum 2, 030334 (2021)

Single proton cooled by distant ions
Manas Mukherjee,
Nature 596, 490-491 (2021)

Steady-state phonon occupation of electromagnetically-induced-transparency cooling: Higher-order calculations
Shuo Zhang, Tian-Ci Tian, Zheng-Yang Wu, Zong-Sheng Zhang, Xin-Hai Wang, Wei Wu, Wan-Su Bao, and Chu Guo
Phys. Rev. A 104, 013117 (2021)

Sympathetic cooling of a trapped proton mediated by an LC circuit
M. Bohman, V. Grunhofer, C. Smorra, M. Wiesinger, C. Will, M. J. Borchert, J. A. Devlin, S. Erlewein, M. Fleck, S. Gavranovic, J. Harrington, B. Latacz, A. Mooser, D. Popper, E. Wursten, K. Blaum, Y. Matsuda, C. Ospelkaus, W. Quint, J. Walz, S. Ulmer & BASE Collaboration
Nature 596, 514–518 (2021)

Testing CPT violation, entanglement and gravitational interactions in particle mixing with trapped ions
Antonio Capolupo, Salvatore Marco Giampaolo and Aniello Quaranta
Eur. Phys. J. C 81: 410 (2021)

Trapped Electrons and Ions as Particle Detectors
Daniel Carney, Hartmut Häffner, David C. Moore, and Jacob M. Taylor
Phys. Rev. Lett. 127, 061804 (2021)

Underlying SUSY in a generalized Jaynes–Cummings model
F. H. Maldonado-Villamizar, C. A. González-Gutiérrez, L. Villanueva-Vergara & B. M. Rodríguez-Lara
Scientific Reports volume 11, 16467 (2021)

Versatile Atomic Magnetometry Assisted by Bayesian Inference
R. Puebla, Y. Ban, J.F. Haase, M.B. Plenio, M. Paternostro, and J. Casanova
Phys. Rev. Applied 16, 024044 (2021)


A Deterministic Single Ion Fountain
Felix Stopp, Henri Lehec, Ferdinand Schmidt-Kaler

Adiabatic Dynamics and Shortcuts to Adiabaticity: Fundamentals and Applications
Alan C. Santos

Asymmetric Transport in Long-Range Interacting Chiral Spin Chains
Javad Vahedi

Benchmarking Machine Learning Algorithms for Adaptive Quantum Phase Estimation with Noisy Intermediate-Scale Quantum Sensors
Nelson Filipe Costa, Yasser Omar, Aidar Sultanov, Gheorghe Sorin Paraoanu

Conformer-specific polar cycloaddition of dibromobutadiene with trapped propene ions
Ardita Kilaj, Jia Wang, Patrik Stranak, Max Schwilk, Uxia Rivero, Lei Xu, O. Anatole von Lilienfeld, Jochen Küpper, Stefan Willitsch

Detecting Qubit-coupling Faults in Ion-trap Quantum Computers
Andrii O. Maksymov, Jason Nguyen, Vandiver Chaplin, Yunseong Nam, Igor L. Markov

Direct Q-Value Determination of the β− Decay of 187Re
P. Filianin, C. Lyu, M. Door, K. Blaum, W. J. Huang, M. Haverkort, P. Indelicato, C. H. Keitel, K. Kromer, D. Lange, Y. N. Novikov, A. Rischka, R. X. Schüssler, Ch. Schweiger, S. Sturm, S. Ulmer, Z. Harman, S. Eliseev

Determining Reaction Pathways at Low Temperatures by Isotopic Substitution: The Case of BeD+ + H2O
Tiangang Yang, Bin Zhao, Gary K. Chen, Hua Guo, Wesley C. Campbell, Eric R. Hudson

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, Alireza Seif

Entangling operations in nolinear two-atom Tavis-Cummings models
Rocío Gómez-Rosas, Carlos A. González-Gutiérrez, Juan Mauricio Torres

Experimental realization of para-particle oscillators
C. Huerta Alderete, Alaina M. Green, Nhung H. Nguyen, Yingyue Zhu, B. M. Rodríguez-Lara, Norbert M. Linke

Gaussian mixture model clustering algorithms for the analysis of high-precision mass measurements
Colin M. Weber, Dwaipayan Ray, Adrian A. Valverde, Jason A. Clark, Kumar S. Sharma

Generation of Spin Cat States in an Engineered Dicke Model
Caspar Groiseau, Stuart J. Masson, Scott Parkins

High stability cryogenic system for quantum computing with compact packaged ion traps
Robert F. Spivey, Ismail V. Inlek, Zhubing Jia, Stephen Crain, Ke Sun, Junki Kim, Geert Vrijsen, Chao Fang, Colin Fitzgerald, Steffen Kross, Tom Noel, Jungsang Kim

Lifetime of the 2F7/2 level in Yb+ for spontaneous emission of electric octupole radiation
R. Lange, A. A. Peshkov, N. Huntemann, Chr. Tamm, A. Surzhykov, E. Peik

Millicharged dark matter detection with ion traps
Dmitry Budker, Peter W. Graham, Harikrishnan Ramani, Ferdinand Schmidt-Kaler, Christian Smorra, Stefan Ulmer

Observing emergent hydrodynamics in a long-range quantum magnet
M. K. Joshi, F. Kranzl, A. Schuckert, I. Lovas, C. Maier, R. Blatt, M. Knap, C. F. Roos

Optimized sideband cooling and enhanced thermometry of trapped ions
A. J. Rasmusson, Marissa D’Onofrio, Yuanheng Xie, Jiafeng Cui, Philip Richerme

Quantum kernels with squeezed-state encoding for machine learning
Long Hin Li, Dan-Bo Zhang, Z. D. Wang

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

Quasienergy operators and general squeezed states for systems of trapped ions
Bogdan M. Mihalcea

Resource-efficient dissipative entanglement of two trapped-ion qubits
Daniel C. Cole, Stephen D. Erickson, Giorgio Zarantonello, Karl P. Horn, Pan-Yu Hou, Jenny J. Wu, Daniel H. Slichter, Florentin Reiter, Christiane P. Koch, Dietrich Leibfried

Robust entanglement by continuous dynamical decoupling of the J-coupling interaction
C. H. Valahu, A. M. Lawrence, S. Weidt, W. K. Hensinger

Shuttle-Exploiting Attacks and Their Defenses in Trapped-Ion Quantum Computers
Abdullah Ash Saki, Rasit Onur Topaloglu, Swaroop Ghosh

Suppression of mid-circuit measurement crosstalk errors with micromotion
J. P. Gaebler, C. H. Baldwin, S. A. Moses, J. M. Dreiling, C. Figgatt, M. Foss-Feig, D. Hayes, J. M. Pino

Unifying and benchmarking state-of-the-art quantum error mitigation techniques
Daniel Bultrini, Max Hunter Gordon, Piotr Czarnik, Andrew Arrasmith, Patrick J. Coles, Lukasz Cincio


Copyright 2021 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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