ITN Newsletter – January 2021

ITN Newsletter – January 2021

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CERN has made a video to promote the recent paper of the BASE collaboration on axion detection using Penning trap single particle detection systems. If you have other examples of promotional media, podcasts, movies, we would be happy to announce and include them in the COST action website. We can also take up your twitter announcements. Just let us know !

Dear all,

CERN has made a video to promote the  recent paper of the BASE collaboration on axion detection using Penning trap single particle detection systems…
If you have other examples of promotional media, podcasts, movies, we would be happy to announce and include them in the COST action website. We can also take up your twitter announcements. Just let us know !
Your editorial team


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

The Virtual AMO Seminar ( Fridays, 7pm (UTC) 
The “Quantum Science Seminar” ( Thursdays, 5pm


WInter School on Physics with Trapped Charged Particles, Les Houches (France) from January 25 – February 5th, 2021.  LINK

The MIAPP program “PARTICLE & AMO PHYSICISTS DISCUSSING QUANTUM SENSORS AND NEW PHYSICS” will be held at the Munich Institute for Astro- and Particle Physics (MIAPP, in Garching, Germany, from 1st to 26th March 2021.

European Conference on Trapped Ions (ECTI), Djurönäset, Sweden, summer 2021

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

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

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


Postdoc position available at Stockholm University on Experimental Quantum Computation with Trapped Rydberg Ions. For more information see or contact

Oxford Ionics is a UK-based start-up building trapped-ion quantum computers. We are hiring ion trappers for a range of positions. If this could be a fit for you, we’d love to hear from you at

2 PhD studentships at Sussex University are available. Details can be found HERE and HERE

The Trapped Ion Quantum Information group at ETH Zürich, Switzerland, seeks a postdoc for the ERC funded IONPEN project. This experiment aims to realize a novel platform for quantum computation and simulation using trapped ions in 2-dimensional arrays of Penning microtraps. For further details please see the job advert  or contact the group ()

A PhD position in theoretical quantum many-body physics at the University of Tübingen. For details, please contact Igor Lesanowsky.

Postdoc and PhD positions are available at LaserLaB of the Vrije Universiteit Amsterdam (The Netherlands) at several projects that focus on fundamental physics through laser precision measurements of He+, HD+, H2+, HD and HT. For more information see: LINK

Postdoctoral and PhD positions at RWTH Aachen and Forschungszentrum Jülich in the theoretical quantum technology group in the area of quantum information processing, with a focus on quantum error correction, fault-tolerant quantum computing and physical implementations. Please contact

Permanent positions (at postdoc level) are available to develop optical and microwave atomic clocks at the UK’s National Physical Laboratory. Contact: Details. 
2 Research Fellow Positions
in Quantum Technology for Fundamental Physics at in the ITCM-Group at the University of Sussex. The research project is part of the UK ‘Network of clocks for measuring the stability of fundamental constants’ consortium. The consortium aims to build a network of dissimilar clocks to search for spatio-temporal changes in fundamental constants. The team at Sussex investigate transitions in molecular nitrogen ions to measure changes in the proton-to-electron mass ratio. Our partners in the network are the National Physical Laboratory, Imperial College London, the University of Birmingham and the University of Sussex. More information here or contact Matthias Keller ().

A PhD position at Infineon on 1k Qubit Ion Traps. Details

The TITAN collaboration seeks 3 Postdoctoral Fellows to support its high-precision experiments at TRIUMF. Four on-line ion traps (a linear Paul trap, MR-TOF, EBIT, and Penning trap) are used to prepare and measure radioactive ion beams to study nuclear structure, nuclear astrophysics, and fundamental interactions. Please read here or contact Ania Kwiatkowski, , for more information.

A postdoctoral research associate to work on an electron electric dipole moment measurement using ultracold molecules. Details


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


Please sent informations about your publications to

Continuously Parametrized Quantum Simulation of Molecular Electron-Transfer Reactions
Frank Schlawin, Manuel Gessner, Andreas Buchleitner, Tobias Schätz, and Spiros S. Skourtis
PRX Quantum 2, 010314 (2021)

Constraints on the Coupling between Axionlike Dark Matter and Photons Using an Antiproton Superconducting Tuned Detection Circuit in a Cryogenic Penning Trap
Jack A. Devlin, Matthias J. Borchert, Stefan Erlewein, Markus Fleck, James A. Harrington, Barbara Latacz, Jan Warncke, Elise Wursten, Matthew A. Bohman, Andreas H. Mooser, Christian Smorra, Markus Wiesinger, Christian Will, Klaus Blaum, Yasuyuki Matsuda, Christian Ospelkaus, Wolfgang Quint, Jochen Walz, Yasunori Yamazaki, and Stefan Ulmer
Phys. Rev. Lett. 126, 041301 (2021)

Deterministic spin-photon entanglement from a trapped ion in a fiber Fabry–Perot cavity
Pascal Kobel, Moritz Breyer & Michael Köhl
npj Quantum Information 7 , 1–7 (2021)

Designer Molecules for Fundamental-Symmetry Tests
Ronald F. Garcia Ruiz
Physics 14, 3 (2021)

Double-Electromagnetically-Induced-Transparency Ground-State Cooling of Stationary Two-Dimensional Ion Crystals
Mu Qiao, Ye Wang, Zhengyang Cai, Botao Du, Pengfei Wang, Chunyang Luan, Wentao Chen, Heung-Ryoul Noh, and Kihwan Kim
Phys. Rev. Lett. 126, 023604 (2021)

Dynamic Framework for Criticality-Enhanced Quantum Sensing
Yaoming Chu, Shaoliang Zhang, Baiyi Yu, and Jianming Cai
Phys. Rev. Lett. 126, 010502 (2021)

Entangling logical qubits with lattice surgery
Alexander Erhard, Hendrik Poulsen Nautrup, Michael Meth, Lukas Postler, Roman Stricker, Martin Stadler, Vlad Negnevitsky, Martin Ringbauer, Philipp Schindler, Hans J. Briegel, Rainer Blatt, Nicolai Friis & Thomas Monz
Nature 589 , 220–224 (2021)

Experimental verification of anti–Kibble-Zurek behavior in a quantum system under a noisy control field
Ming-Zhong Ai, Jin-Ming Cui, Ran He, Zhong-Hua Qian, Xin-Xia Gao, Yun-Feng Huang, Chuan-Feng Li, and Guang-Can Guo
Phys. Rev. A 103, 012608 (2021)

Generalized Hamiltonian to describe imperfections in ion-light interaction
Ming Li, Kenneth Wright, Neal C. Pisenti, Kristin M. Beck, Jason H. V. Nguyen, and Yunseong Nam
Phys. Rev. A 102, 062616 (2020)

Ground-state gj factors of the Cd+, Yb+, and Hg+ ions
Y. M. Yu, B. K. Sahoo, and B. B. Suo
Phys. Rev. A 102, 062824 (2020)

Improved Limits for Violations of Local Position Invariance from Atomic Clock Comparisons
R. Lange, N. Huntemann, J. M. Rahm, C. Sanner, H. Shao, B. Lipphardt, Chr. Tamm, S. Weyers, and E. Peik
Phys. Rev. Lett. 126, 011102 (2021)

Fast entangling gates in long ion chains
Zain Mehdi, Alexander K. Ratcliffe, and Joseph J. Hope
Phys. Rev. Research 3, 013026 (2021)

Heat rectification with a minimal model of two harmonic oscillators
M. A. Simón, A. Alaña, M. Pons, A. Ruiz-García, and J. G. Muga
Phys. Rev. E 103, 012134 (2021)

High-fidelity light-shift gate for clock-state qubits
C. H. Baldwin, B. J. Bjork, M. Foss-Feig, J. P. Gaebler, D. Hayes, M. G. Kokish, C. Langer, J. A. Sedlacek, D. Stack, and G. Vittorini
Phys. Rev. A 103, 012603 (2021)

Hyperfine structure and electric quadrupole transitions in the deuterium molecular ion
P. Danev, D. Bakalov, V. I. Korobov, and S. Schiller
Phys. Rev. A 103, 012805 (2021)

Nonlinear Bell inequality for macroscopic measurements
Adam Bene Watts, Nicole Yunger Halpern, and Aram Harrow
Phys. Rev. A 103, L010202 (2021)

Observation of Hong-Ou-Mandel interference with scalable Yb+-photon interfaces
Kim, Junki; Jeong, Junho; Jung, Changhyun; Lee, Minjae; Park, Yunjae; Dan Cho, Dong-il; Kim, Taehyun
Optics Express 28(26) 39727-39738 (2020)

Optical and electrical feedback cooling of a silica nanoparticle levitated in a Paul trap
Lorenzo Dania, Dmitry S. Bykov, Matthias Knoll, Pau Mestres, and Tracy E. Northup
Phys. Rev. Research 3, 013018 (2021)

Optical Mass Spectrometry of Cold RaOH+ and RaOCH3+
M. Fan, C. A. Holliman, X. Shi, H. Zhang, M. W. Straus, X. Li, S. W. Buechele, and A. M. Jayich
Phys. Rev. Lett. 126, 023002 (2021)

Penning ionization processes involving cold Rydberg alkali metal atoms
Alaa Abo Zalam, Milan S. Dimitrijević, Vladimir A. Srećković, Nikolai N. Bezuglov, Kaspars Miculis, Andrey N. Klyucharev and Aigars Ekers
Eur. Phys. J. D (2020) 74: 237

Performance evaluation of the discrete truncated Wigner approximation for quench dynamics of quantum spin systems with long-range interactions
Masaya Kunimi, Kazuma Nagao, Shimpei Goto, and Ippei Danshita
Phys. Rev. Research 3, 013060 (2021)

Precise Spectroscopy of High-Frequency Oscillating Fields with a Single-Qubit Sensor
Yaoming Chu, Pengcheng Yang, Musang Gong, Min Yu, Baiyi Yu, Martin B. Plenio, Alex Retzker, and Jianming Cai
Phys. Rev. Applied 15, 014031 (2021)

Probing Fundamental Symmetries of Deformed Nuclei in Symmetric Top Molecules
Phelan Yu and Nicholas R. Hutzler
Phys. Rev. Lett. 126, 023003 (2021)

Quantum effects in the Aubry transition
Pietro Maria Bonetti, Andrea Rucci, Maria Luisa Chiofalo, and Vladan Vuletić
Phys. Rev. Research 3, 013031 (2021)

Single ion qubit with estimated coherence time exceeding one hour
Pengfei Wang, Chun-Yang Luan, Mu Qiao, Mark Um, Junhua Zhang, Ye Wang, Xiao Yuan, Mile Gu, Jingning Zhang & Kihwan Kim
Nature Communications 12 , 1–8 (2021)

State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector
S. L. Todaro, V. B. Verma, K. C. McCormick, D. T. C. Allcock, R. P. Mirin, D. J. Wineland, S. W. Nam, A. C. Wilson, D. Leibfried, and D. H. Slichter
Phys. Rev. Lett. 126, 010501 (2021)

Thermodynamics of precision in quantum nanomachines
Antoine Rignon-Bret, Giacomo Guarnieri, John Goold, and Mark T. Mitchison
Phys. Rev. E 103, 012133 (2021)

Transport of a Single Cold Ion Immersed in a Bose-Einstein Condensate
T. Dieterle, M. Berngruber, C. Hölzl, R. Löw, K. Jachymski, T. Pfau, and F. Meinert
Phys. Rev. Lett. 126, 033401 (2021)

Tracking a Single Ion in an Ultracold Gas
Johannes Hecker Denschlag
Physics 14, 3 (2021)

Trapping, shaping, and isolating of an ion Coulomb crystal via state-selective optical potentials
Pascal Weckesser, Fabian Thielemann, Daniel Hoenig, Alexander Lambrecht, Leon Karpa, and Tobias Schaetz
Phys. Rev. A 103, 013112 (2021)



A compact ion-trap quantum computing demonstrator
Ivan Pogorelov, Thomas Feldker, Christian D. Marciniak, Georg Jacob, Verena Podlesnic, Michael Meth, Vlad Negnevitsky, Martin Stadler, Kirill Lakhmanskiy, Rainer Blatt, Philipp Schindler, Thomas Monz

A micro-optical module for multi-wavelength addressing of trapped ions
M. L. Day, K. Choonee, Z. Chaboyer, S. Gross, M. J. Withford, A. G. Sinclair, G. D. Marshall

Branching Quantum Convolutional Neural Networks
Ian MacCormack, Conor Delaney, Alexey Galda, Nidhi Aggarwal, Prineha Narang

Cold ion beam in a storage ring as a platform for large-scale quantum computers and simulators: challenges and directions for research and development
Timur Shaftan, Boris B. Blinov

Creation of double-well potentials in a surface-electrode trap towards a nanofriction model emulator
U. Tanaka, M. Nakamura, K. Hayasaka, A. Bautista-Salvadora, C. Ospelkaus, T. E. Mehlstäubler

Efficient, stabilized two-qubit gates on a trapped-ion quantum computer
Reinhold Blümel, Nikodem Grzesiak, Nhung H. Nguyen, Alaina M. Green, Ming Li, Andrii Maksymov, Norbert M. Linke, Yunseong Nam

Energy-transfer Quantum Dynamics of HeH+ with He atoms: Rotationally Inelastic Cross Sections and Rate Coefficients
Franco Gianturco, Kousik Giri, Lola Gonzalez-Sanchez, Ersin Yurtsever, Narayanasami Sathyamurthy, Roland Wester

Experimental Realization of Nonadiabatic Holonomic Single-Qubit Quantum Gates with Two Dark Paths in a Trapped Ion
Ming-Zhong Ai, Sai Li, Ran He, Zheng-Yuan Xue, Jin-Ming Cui, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo

Experimentally Realizing Efficient Quantum Control with Reinforcement Learning
Ming-Zhong Ai, Yongcheng Ding, Yue Ban, José D. Martín-Guerrero, Jorge Casanova, Jin-Ming Cui, Yun-Feng Huang, Xi Chen, Chuan-Feng Li, Guang-Can Guo

Fabrication of 15NV− centers in diamond using a deterministic single ion implanter
K. Groot-Berning, G. Jacob, C. Osterkamp, F. Jelezko, F. Schmidt-Kaler

Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined Collisions
Vladimir S. Melezhik

Improving entanglement generation rates in trapped ion quantum networks using nondestructive photon measurement and storage
John Hannegan, James D. Siverns, Jake Cassell, Qudsia Quraishi

Probing Multiple Electric Dipole Forbidden Optical Transitions in Highly Charged Nickel Ions
Shi-Yong Liang, Ting-Xian Zhang, Hua Guan, Qi-Feng Lu, Jun Xiao, Shao-Long Chen, Yao Huang, Yong-Hui Zhang, Cheng-Bin Li, Ya-Ming Zou, Ji-Guang Li, Zong-Chao Yan, Andrei Derevianko, Ming-Sheng Zhan, Ting-Yun Shi, Ke-Lin Gao

Quantum process tomography of a Mølmer-Sørensen gate via a global beam
Holly N Tinkey, Adam M Meier, Craig R Clark, Christopher M Seck, Kenton R Brown

Rapid production of defect-free beryllium ion Coulomb crystals
Qiming Wu, Melina Filzinger, Yue Shi, Zhihui Wang, Jiehang Zhang

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, C. Hempel

Spectral properties of a three body atom-ion hybrid system
D. J. Bosworth, M. Pyzh, P. Schmelcher

Symmetry-resolved dynamical purification in synthetic quantum matter
Vittorio Vitale, Andreas Elben, Richard Kueng, Antoine Neven, Jose Carrasco, Barbara Kraus, Peter Zoller, Pasquale Calabrese, Benoit Vermersch, Marcello Dalmonte

Testing CPT violation, entanglement and gravitational interactions in particle mixing with trapped ions
Antonio Capolupo, Salvatore Marco Giampaolo, Aniello Quaranta

TSV-integrated Surface Electrode Ion Trap for Scalable Quantum Information Processing
P. Zhao, J. -P. Likforman, H. Y. Li, J. Tao, T. Henner, Y. D. Lim, W. W. Seit, C. S. Tan, Luca Guidoni

Vibrational Quenching of CN- in Collisions with He and Ar
Barry Mant, Ersin Yurtsever, Lola González-Sánchez, Roland Wester, Franco A. Gianturco

Visible spectra of W8+ in an electron-beam ion trap
Q. Lu, C. L. Yan, J. Meng, G. Q. Xu, Y. Yang, C. Y. Chen, J. Xiao, J. G. Li, J. G. Wang, Y. Zou


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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