ITN Newsletter – May 2020

ITN Newsletter – May 2020

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25 years of the Cirac-Zoller controlled-NOT gate have changed the landscape in ion trapping, putting stored ions at the heart of quantum information processing. Read Iulia Georgescu's review of this ground-breaking work ...

Dear all,

25 years of the Cirac-Zoller controlled-NOT gate have changed the landscape in ion trapping, putting stored ions at the heart of quantum information processing. Read Iulia Georgescu’s review of this ground-breaking work HERE.
Your editorial team


Special issue ” Trapped Ion Quantum Information“. Guest editor: Erik Torrontegui. Details

An upcoming topical collection in Physical Chemistry Chemical Physics PCCP Quantum Computing and Quantum Information Storage is open until 30 July 2020. Details

Special Issue in Applied Sciences (Open Access Journal): “Optical Trapping of Ions and Atoms 2020: Novel Advances and Prospects“, now open for submissions.
Guest Editors:  Tobias Schätz, Vladan Vuletic, Michael Drewsen, Jonathan Home, Leon Karpa        Details

EPJ QT special issue: “Quantum Metrology & Quantum Enhanced Measurement“. Submissions are accepted from now until 30 June 2021. Details

Online seminars

Virtual Seminar on Precision Physics and Fundamental Symmetries 2020
an initiative for the precision physics and quantum information community
every Tuesday and Thursday   LINK
The Virtual AMO Seminar ( Fridays, 7pm (UTC) 
The “Quantum Science Seminar” ( Thursdays, 3pm (UTC)


Please be aware that there might be last-minute cancellations

26th Young Atom Optician (YAO) conference to be held in Aarhus, Denmark POSTPONED to 17-21 August 2020 . LINK

52nd EGAS conference,  in Zagreb, Croatia POSTPONED to 5-9 July 2021

European Conference on Trapped Ions (ECTI), Djurönäset, Sweden, POSTPONED

CANCELLED – 13th International Workshop on Non-Neutral Plasmas, Milano, Italy, 13-16 July 2020 LINK

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

CANCELLED – CCMI 2020 – Cold and Controlled Molecules and Ions, 6 – 11 September 2020, Durham University, UK, LINK


Postdoc position available in the Trapped-Ion Quantum Simulation Lab at Rice University (Texas, USA). For details, please contact Guido Pagano.

PTB offers new PostDoc and PhD positions for physicists or engineers to develop and produce integrated ion traps within our Quantum Technology Center. Please contact Tanja Mehlstäubler for further details.

A postdoc position in the Ultracold Quantum Molecular Systems Group at the University of Warsaw in Poland Details

A PhD position on spectroscopy of silicon clusters. LINK

Fully funded PhD studentships available in Swansea (collaboration work at CERN). LINK
A postdoctoral opening on storage ring technologies for quantum computing. Job id 1989 on the BNL careers site. The job description can be found here. For more information please email Kevin Brown,

Applications are sought for an Assistant Professor (lecturer) academic position at Laboratoire de Physique des Lasers, Université Paris 13 (newly called Université Sorbonne Paris Nord).
For further information and to apply, contact Benoit Darquié.  Deadline 9 April 2020

A vacancy in the Swansea group at ALPHA at CERN to work on the ALPHA antihydrogen experiment with particular focus on sympathetic cooling of positrons. Please find details here 


Two postdoctoral research associate positions to produce trapped, ultracold molecules that can be used to measure the electron’s electric dipole moment, at the Centre for Cold Matter at Imperial College London. Details

Two PhD positions are available in the group of Prof. Stefan Willitsch (University of Basel, Switzerland) on cold ion-molecule hybrid systems. See the group’s website for further information.

Multiple postdoc positions are available in the NIST Ion Storage Group in Colorado, USA.  Topics include quantum simulations in a Penning trap, trapped-ion quantum computing, and coherent control and precision spectroscopy of single molecular ions.  For details please contact John Bollinger. 



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


Please sent informations about your publications to

A Laboratory Astrophysics Problem: The Lifetime of Very Long-Lived Levels in Low-Charge Ions
Elmar Träbert
Atoms 8, 21 (2020)

Detection of metastable electronic states by Penning trap mass spectrometry
R. X. Schüssler, H. Bekker, M. Braß, H. Cakir, J. R. Crespo López-Urrutia, M. Door, P. Filianin, Z. Harman, M. W. Haverkort, W. J. Huang, P. Indelicato, C. H. Keitel, C. M. König, K. Kromer, M. Müller, Y. N. Novikov, A. Rischka, C. Schweiger, S. Sturm, S. Ulmer, S. Eliseev & K. Blaum – Show fewer authors
Nature 581 , 42–46

Electronic Bridge Excitation in Highly Charged 229Th Ions
Pavlo V. Bilous, Hendrik Bekker, Julian C. Berengut, Benedict Seiferle, Lars von der Wense, Peter G. Thirolf, Thomas Pfeifer, José R. Crespo López-Urrutia, and Adriana Pálffy
Phys. Rev. Lett. 124, 192502 (2020)

Engineered thermalization and cooling of quantum many-body systems
Mekena Metcalf, Jonathan E. Moussa, Wibe A. de Jong, and Mohan Sarovar
Phys. Rev. Research 2, 023214 (2020)

Engineering of microfabricated ion traps and integration of advanced on-chip features
Zak David Romaszko, Seokjun Hong, Martin Siegele, Reuben Kahan Puddy, Foni Raphaël Lebrun-Gallagher, Sebastian Weidt & Winfried Karl Hensinger
Nature Reviews Physics , 1–15

Interaction potentials and ultracold scattering cross sections for the 7Li+–7Li ion-atom system
A. Pandey, M. Niranjan, N. Joshi, S. A. Rangwala, R. Vexiau, and O. Dulieu
Phys. Rev. A 101, 052702 (2020)

Ising model in a light-induced quantized transverse field
Jonas Rohn, Max Hörmann, Claudiu Genes, and Kai Phillip Schmidt
Pays. Rev. Research 2, 023131 (2020)

Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence
R. T. Sutherland, R. Srinivas, S. C. Burd, H. M. Knaack, A. C. Wilson, D. J. Wineland, D. Leibfried, D. T. C. Allcock, D. H. Slichter, and S. B. Libby
Phys. Rev. A 101, 042334 (2020)

Many-body quantum heat engines with shortcuts to adiabaticity
Andreas Hartmann, Victor Mukherjee, Wolfgang Niedenzu, and Wolfgang Lechner
Phys. Rev. Research 2, 023145 (2020)

Mass spectrometry for future atomic clocks
Marianna S. Safronova
Nature 581 , 35–36

Micromotion-enhanced fast entangling gates for trapped-ion quantum computing
Alexander K. Ratcliffe, Lachlan M. Oberg, and Joseph J. Hope
Phys. Rev. A 101, 052332 (2020)

Nd+ isotope shift measurements in a cryogenically cooled neutral plasma
Nishant Bhatt, Kosuke Kato, and Amar C. Vutha
Phys. Rev. A 101, 052505 (2020)

Optimized fast gates for quantum computing with trapped ions
Evan P. G. Gale, Zain Mehdi, Lachlan M. Oberg, Alexander K. Ratcliffe, Simon A. Haine, and Joseph J. Hope
Phys. Rev. A 101, 052328 (2020)

Overdamped dynamics of a Brownian particle levitated in a Paul trap
Gerard P. Conangla, Dwight Nwaigwe, Jan Wehr, and Raúl A. Rica
Phys. Rev. A 101, 053823 (2020)

Precise test of quantum electrodynamics and determination of fundamental constants with HD+ ions
S. Alighanbari, G. S. Giri, F. L. Constantin, V. I. Korobov & S. Schiller
Nature 581 , 152–158

Precision Measurements of the 138Ba+ 6s2S1/2−5d2D5/2 Clock Transition
K. J. Arnold, R. Kaewuam, S. R. Chanu, T. R. Tan, Zhiqiang Zhang, and M. D. Barrett
Phys. Rev. Lett. 124, 193001 (2020)

Probabilistic eigensolver with a trapped-ion quantum processor
Jing-Ning Zhang, Iñigo Arrazola, Jorge Casanova, Lucas Lamata, Kihwan Kim, and Enrique Solano
Phys. Rev. A 101, 052333 (2020)

Quantum entanglement between an atom and a molecule
Yiheng Lin, David R. Leibrandt, Dietrich Leibfried & Chin-wen Chou
Nature 581 , 273–277

Quantum State Engineering by Shortcuts to Adiabaticity in Interacting Spin-Boson Systems
Obinna Abah, Ricardo Puebla, and Mauro Paternostro
Phys. Rev. Lett. 124, 180401 (2020)

Quantum Walks of a Phonon in Trapped Ions
Masaya Tamura, Takashi Mukaiyama, and Kenji Toyoda
Phys. Rev. Lett. 124, 200501 (2020)

Randomized benchmarking in the analogue setting
E Derbyshire, J Yago Malo, A J Daley, E Kashefi and P Wallden
2020 Quantum Sci. Technol. 5 034001

Rydberg spectrum of a single trapped Ca+ ion: A Floquet analysis
Mariusz Pawlak and H. R. Sadeghpour
Phys. Rev. A 101, 052510 (2020)

Shortcut-to-adiabaticity quantum Otto refrigerator
Obinna Abah, Mauro Paternostro, and Eric Lutz
Phys. Rev. Research 2, 023120 (2020)

Simulating quantum field theory in curved spacetime with quantum many-body systems
Run-Qiu Yang, Hui Liu, Shining Zhu, Le Luo, and Rong-Gen Cai
Phys. Rev. Research 2, 023107 (2020)

Single-atom energy-conversion device with a quantum load
Noah Van Horne, Dahyun Yum, Tarun Dutta, Peter Hänggi, Jiangbin Gong, Dario Poletti & Manas Mukherjee
npj Quantum Information 6 , 1–9

State-dependent motional squeezing of a trapped ion: Proposed method and applications
Martín Drechsler, M. Belén Farías, Nahuel Freitas, Christian T. Schmiegelow, and Juan Pablo Paz
Phys. Rev. A 101, 052331 (2020)

Towards storage rings as quantum computers
K. A. Brown and T. Roser
Phys. Rev. Accel. Beams 23, 054701 (2020)

Trapped ion quantum computing turns 25
Iulia Georgescu
Nature Reviews Physics (2020)

X-Ray Absorption Spectrum of the N+2 Molecular Ion
R. Lindblad, L. Kjellsson, R. C. Couto, M. Timm, C. Bülow, V. Zamudio-Bayer, M. Lundberg, B. von Issendorff, J. T. Lau, S. L. Sorensen, V. Carravetta, H. Ågren, and J.-E. Rubensson
Phys. Rev. Lett. 124, 203001 (2020)


A Transition-edge Sensor-based X-ray Spectrometer for the Study of Highly Charged Ions at the National Institute of Standards and Technology Electron Beam Ion Trap
P. Szypryt, G. C. O’Neil, E. Takacs, J. N. Tan, S. W. Buechele, A. S. Naing, D. A. Bennett, W. B. Doriese, M. Durkin, J. W. Fowler, J. D. Gard, G. C. Hilton, K. M. Morgan, C. D. Reintsema, D. R. Schmidt, D. S. Swetz, J. N. Ullom, Yu. Ralchenko

Bound on quantum scrambling with all-to-all interactions
Chao Yin, Andrew Lucas

Coulomb Expansion of Cold Non-Neutral Rubidium Plasma
Michael A. Viray, Stephanie A. Miller, Georg Raithel

Descendant of the X-ogen carrier and a “mass of 69”: Infrared action spectroscopic detection of HC3O+ and HC3S+
S. Thorwirth, M. E. Harding, O. Asvany, S. Brünken, P. Jusko, K. L. K. Lee, T. Salomon, M. C. McCarthy, S. Schlemmer

Detection of metastable electronic states by Penning trap mass spectrometry
Rima Xenia Schüssler, Hendrik Bekker, Martin Braß, Halil Cakir, José R. Crespo López-Urrutia, Menno Door, Pavel Filianin, Zoltan Harman, Maurits W. Haverkort, Wen Jia Huang, Paul Indelicato, Christoph Helmut Keitel, Charlotte Maria König, Kathrin Kromer, Marius Müller, Yuri N. Novikov, Alexander Rischka, Christoph Schweiger, Sven Sturm, Stefan Ulmer, Ssergey Eliseev, Klaus Blaum

Deterministic spin-photon entanglement from a trapped ion in a fiber Fabry-Perot cavity
Pascal Kobel, Moritz Breyer, Michael Köhl

Effects of disorder and interactions on environment assisted quantum transport
Elinor Zerah-Harush, Yonatan Dubi

Entangled quantum cellular automata, physical complexity, and Goldilocks rules
Logan E. Hillberry, Matthew T. Jones, David L. Vargas, Patrick Rall, Nicole Yunger Halpern, Ning Bao, Simone Notarnicola, Simone Montangero, Lincoln D. Carr

Experimental setup for studying an utracold mixture of trapped Yb+-6Li
 H. Hirzler, T. Feldker, H. Fürst, N. V. Ewald, E. Trimby, R. S. Lous, J. Arias Espinoza, M. Mazzanti, J. Joger, R. Gerritsma

Exponentially improved detection and correction of errors in experimental systems using neural networks
Pascal Kobel, Martin Link, Michael Köhl

First Penning trap mass measurement of 36Ca
J. Surbrook, G. Bollen, M. Brodeur, A. Hamaker, D. Pérez-Loureiro, D. Puentes, C. Nicoloff, M. Redshaw, R. Ringle, S. Schwarz, C. S. Sumithrarachchi, L. J. Sun, A. A. Valverde, A. C. C. Villari, C. Wrede, I. T. Yandow

Holographic quantum algorithms for simulating correlated spin systems
Michael Foss-Feig, David Hayes, Joan M. Dreiling, Caroline Figgatt, John P. Gaebler, Steven A. Moses, Juan M. Pino, Andrew C. Potter

Long-range multi-body interactions and three-body anti-blockade in a trapped Rydberg ion chain
Filippo Maria Gambetta, Chi Zhang, Markus Hennrich, Igor Lesanovsky, Weibin Li

Magic trapping of a Rydberg ion with a diminished static polarizability
Fabian Pokorny, Chi Zhang, Gerard Higgins, Markus Hennrich

Mass-selective removal of ions from Paul traps using parametric excitation
Julian Schmidt, Daniel Hönig, Pascal Weckesser, Fabian Thielemann, Tobias Schaetz, Leon Karpa

Novel Penning-trap techniques reveal isomeric states in 128In and 130In for the first time
D. A. Nesterenko, A. Kankainen, J. Kostensalo, C. R. Nobs, A. M. Bruce, O. Beliuskina, L. Canete, T. Eronen, E. R. Gamba, S. Geldhof, R. de Groote, A. Jokinen, J. Kurpeta, I. D. Moore, L. Morrison, Zs. Podolyák, I. Pohjalainen, S. Rinta-Antila, A. de Roubin, M. Rudigier, J. Suhonen, M. Vilén, V. Virtanen, J. Äystö

Numeric optimization for configurable, parallel, error-robust entangling gates in large ion registers
Christopher D. B. Bentley, Harrison Ball, Michael J. Biercuk, Andre R. R. Carvalho, Michael R. Hush, Harry J. Slatyer

Observation of effects due to an atom’s electric quadrupole polarizability
Gerard Higgins, Chi Zhang, Fabian Pokorny, Harry Parke, Erik Jansson, Shalina Salim, Markus Hennrich

Optical frequency analysis on dark state of a single trapped ion
Adam Lešundák, Tuan M. Pham, Martin Čížek, Petr Obšil, Lukáš Slodička, Ondřej Číp

Quantum simulation of extended polaron models using compound atom-ion systems
Krzysztof Jachymski, Antonio Negretti

Scalable quantum computation with fast gates in two-dimensional microtrap arrays of trapped ions
Zain Mehdi, Alexander K. Ratcliffe, Joseph J. Hope

Copyright 2020 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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