ITN Newsletter – September 2022

ITN Newsletter – September 2022

Our warmest congratulations to Alain Aspect, John F. Clauser and Anton Zeilinger on receiving the 2022 Nobel Prize in Physics, awarded “for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science”. Hooray to the three of them!

Dear all,

we sincerely congratulate Alain Aspect, John F. Clauser and Anton Zeilinger to the 2022 Nobel prize in physics, awarded “for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science”. Hooray to the three of them !

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



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

2-day online workshop on “Optical clocks for international timekeeping”, which the ROCIT consortium are hosting on the 19th and 20th of October 2022 Details

The very last ! IQFA’13 colloquium “Quantum Engineering, from Fundamental Aspects to Applications”- Nov. 16-18 2022 @Palaiseau Details

25th ICOLS, Estes Park, Colorado/USA, June 2023 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” ( Fridays, 7pm (UTC)

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


A PhD position to make an ion trap source of cold atomic hydrogen at the University of Groningen Details
2 PhD positions in Experimental Molecular Physics at the University of Innsbruck in the Molecular Systems group headed by Roland Wester. Details

PhD and postdoc positions are available in the group of Stefan Willitsch at the University of Basel (Switzerland) on the development of quantum technologies for single trapped molecular ions and their application in precision spectroscopy and controlled molecular and chemical dynamics. Further information can be found HERE

A one-year postdoc position at Imperial College for work on robust quantum gates with trapped ions, with Prof Richard Thompson and Prof Florian Mintert at Imperial College, funded through the Oxford Quantum Computing and Simulation Hub. Details
Various postdoc positions are available at QUEST in the group of Piet Schmidt concerning related to quantum logic spectroscopy of highly charged ions, a transportable Al+ clock and on ion-based quantum computing
A postdoc position working on optical molecular clocks for new physics searches with David Hanneke at Amherst College, Massachusetts, USA. Details
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 Postdoctoral Research Associate Position for molecular spectroscopy (5 years, starting from 1.10.22 or asap) is available at TU Berlin. For further details, please contact: Otto Dopfer or see details
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


You can also find different postdoc positions in frequency metrology


Please sent information about your publications to

Ab initio quantum theory of mass defect and time dilation in trapped-ion optical clocks
V. J. Martínez-Lahuerta, S. Eilers, T. E. Mehlstäubler, P. O. Schmidt, and K. Hammerer
Phys. Rev. A 106, 032803 (2022)

An elementary quantum network of entangled optical atomic clocks
B. C. Nichol, R. Srinivas, D. P. Nadlinger, P. Drmota, D. Main, G. Araneda, C. J. Ballance & D. M. Lucas
Nature volume 609, pages 689–694 (2022)

Demonstration of a quantum advantage by a joint detection receiver for optical communication using quantum belief propagation on a trapped-ion device
Conor Delaney, Kaushik P. Seshadreesan, Ian MacCormack, Alexey Galda, Saikat Guha, and Prineha Narang
Phys. Rev. A 106, 032613 (2022)

Doppler and sympathetic cooling for the investigation of short-lived radioactive ions
S. Sels, F. M. Maier, M. Au, P. Fischer, C. Kanitz, V. Lagaki, S. Lechner, E. Leistenschneider, D. Leimbach, E. M. Lykiardopoulou, A. A. Kwiatkowski, T. Manovitz, Y. N. Vila Gracia, G. Neyens, P. Plattner, S. Rothe, L. Schweikhard, M. Vilen, R. N. Wolf, and S. Malbrunot-Ettenauer
Phys. Rev. Research 4, 033229 (2022)

High-Fidelity Ion State Detection Using Trap-Integrated Avalanche Photodiodes
David Reens, Michael Collins, Joseph Ciampi, Dave Kharas, Brian F. Aull, Kevan Donlon, Colin D. Bruzewicz, Bradley Felton, Jules Stuart, Robert J. Niffenegger, Philip Rich, Danielle Braje, Kevin K. Ryu, John Chiaverini, and Robert McConnell
Phys. Rev. Lett. 129, 100502 (2022)

Embedding the Yang-Lee quantum criticality in open quantum systems
Norifumi Matsumoto, Masaya Nakagawa, and Masahito Ueda
Phys. Rev. Research 4, 033250 (2022)

Experimental Demonstration of Swift Analytical Universal Control Over Nearby Transitions
Yue Li, Zhi-Cheng He, Xinxing Yuan, Mengxiang Zhang, Chang Liu, Yi-Xuan Wu, Mingdong Zhu, Xi Qin, Zheng-Yuan Xue, Yiheng Lin, and Jiangfeng Du
Phys. Rev. Applied 18, 034047 (2022)

Feasibility study on ground-state cooling and single-phonon readout of trapped electrons using hybrid quantum systems
Alto Osada, Kento Taniguchi, Masato Shigefuji, and Atsushi Noguchi
Phys. Rev. Research 4, 033245 (2022)

Fluorescence calorimetry of an ion crystal
Marvin Gajewski, Wenbing Li, Sebastian Wolf, Walter Hahn, Christoph E. Düllmann, Dmitry Budker, Giovanna Morigi, and Ferdinand Schmidt-Kaler
Phys. Rev. A 106, 033108 (2022)

High Fidelity State Preparation and Measurement of Ion Hyperfine Qubits with I>1/2
Fangzhao Alex An, Anthony Ransford, Andrew Schaffer, Lucas R. Sletten, John Gaebler, James Hostetter, and Grahame Vittorini
Phys. Rev. Lett. 129, 130501 (2022)

Ion-native variational ansatz for quantum approximate optimization
Daniil Rabinovich, Soumik Adhikary, Ernesto Campos, Vishwanathan Akshay, Evgeny Anikin, Richik Sengupta, Olga Lakhmanskaya, Kirill Lakhmanskiy, and Jacob Biamonte
Phys. Rev. A 106, 032418 (2022)

Multi-round QAOA and advanced mixers on a trapped-ion quantum computer
Yingyue Zhu, Zewen Zhang, Bhuvanesh Sundar, Alaina M. Green, Cinthia Huerta Alderete, Nhung H. Nguyen, Kaden Hazzard and Norbert M Linke
2022 Quantum Sci. Technol.

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, and L.-M. Duan
Phys. Rev. Lett. 129, 140501 (2022)

Quantum control methods for robust entanglement of trapped ions
C H Valahu, I Apostolatos, S Weidt and W K Hensinger
J. Phys. B: At. Mol. Opt. Phys. 55 204003 (2022)

Quantum simulation and quantum computation of noisy-intermediate scale
Kai Xu, Heng Fan
Chinese Phys. B 31 100304 (2022)

Quantum simulation for topological Euler insulators
Wending Zhao, Yan-Bin Yang, Yue Jiang, Zhichao Mao, Weixuan Guo, Liyuan Qiu, Gangxi Wang, Lin Yao, Li He, Zichao Zhou, Yong Xu & Luming Duan
Communications Physics volume 5, Article number: 223 (2022)

Rescaling decoder for two-dimensional topological quantum color codes on 4.8.8 lattices
Pedro Parrado-Rodríguez, Manuel Rispler, and Markus Müller
Phys. Rev. A 106, 032431 (2022)

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, and L. J. Wang
Phys. Rev. A 106, 033121 (2022)

Tuning between Continuous Time Crystals and Many-Body Scars in Long-Range XYZ Spin Chains
Kieran Bull, Andrew Hallam, Zlatko Papić, and Ivar Martin
Phys. Rev. Lett. 129, 140602 (2022)


Black-body radiation induced photodissociation and population redistribution of weakly bound states in H+2
A. D. Ochoa Franco, M. Beyer

Demonstration of three- and four-body interactions between trapped-ion spins
Or Katz, Lei Feng, Andrew Risinger, Christopher Monroe, Marko Cetina

Design and analysis of digital communication within an SoC-based control system for trapped-ion quantum computing
Nafis Irtija, Jim Plusquellic, Eirini Eleni Tsiropoulou, Joshua Goldberg, Daniel Lobser, Daniel Stick

Can quantum Rabi model with A^2-term avoid no-go theorem for spontaneous SUSY breaking?
Masao Hirokawa

Emergence of super-Poissonian light from indistinguishable single-photon emitters
A. Kovalenko, D. Babjak, A. Lešundák, L. Podhora, L. Lachman, P. Obšil, T. Pham, O. Číp, R. Filip, L. Slodička

Engineering dynamically decoupled quantum simulations with trapped ions
W. Morong, K. S. Collins, A. De, E. Stavropoulos, T. You, C. Monroe

Experimental realization of a 218-ion multi-qubit quantum memory
R. Yao, W. -Q. Lian, Y. -K. Wu, G. -X. Wang, B. -W. Li, Q. -X. Mei, B. -X. Qi, L. Yao, Z. -C. Zhou, L. He, L. -M. Duan

Experimental Implementation of an Efficient Test of Quantumness
 Laura Lewis, Daiwei Zhu, Alexandru Gheorghiu, Crystal Noel, Or Katz, Bahaa Harraz, Qingfeng Wang, Andrew Risinger, Lei Feng, Debopriyo Biswas, Laird Egan, Thomas Vidick, Marko Cetina, Christopher Monroe

Experimental violation of Leggett-Garg inequality in a three-level trapped-ion system
Tianxiang Zhan, Chunwang Wu, Manchao Zhang, Qingqing Qin, Xueying Yang, Han Hu, Wenbo Su, Jie Zhang, Ting Chen, Yi Xie, Wei Wu, Pingxing Chen

Fast Ion Gates Outside the Lamb-Dicke Regime by Robust Quantum Optimal Control
Xiaodong Yang, Yiheng Lin, Yao Lu, Jun Li

High-Accuracy Determination of Paul-Trap Stability Parameters for Electric-Quadrupole-Shift Prediction
T. Lindvall, K. J. Hanhijärvi, T. Fordell, A. E. Wallin

Ion loss events in a cold Rb-Ca+ hybrid trap: photodissociation, black-body radiation and non-radiative charge exchange
Xiaodong Xing, Humberto da Silva Jr, Romain Vexiau, Nadia Bouloufa-Maafa, Stefan Willitsch, Olivier Dulieu

Leak-out Spectroscopy, a universal method of action spectroscopy in cold ion traps
Philipp C. Schmid, Oskar Asvany, Thomas Salomon, Sven Thorwirth, Stephan Schlemmer

Measurement of the Electron Magnetic Moment
X. Fan, T. G. Myers, B. A. D. Sukra, G. Gabrielse

Non-Hermitian skin effect in a single trapped ion
Ziguang Lin, Yiheng Lin, Wei Yi

On the role of entanglement in qudit-based circuit compression
Xiaoqin Gao, Paul Appel, Nicolai Friis, Martin Ringbauer, Marcus Huber

One-Electron Quantum Cyclotron as a Milli-eV Dark-Photon Detector
Xing Fan, Gerald Gabrielse, Peter W. Graham, Roni Harnik, Thomas G. Myers, Harikrishnan Ramani, Benedict A. D. Sukra, Samuel S. Y. Wong, Yawen Xiao

Portfolio Optimization via Quantum Zeno Dynamics on a Quantum Processor
Dylan Herman, Ruslan Shaydulin, Yue Sun, Shouvanik Chakrabarti, Shaohan Hu, Pierre Minssen, Arthur Rattew, Romina Yalovetzky, Marco Pistoia

Predicting molecular vibronic spectra using time-domain analog quantum simulation
Ryan J. MacDonell, Tomas Navickas, Tim F. Wohlers-Reichel, Christophe H. Valahu, Arjun D. Rao, Maverick J. Millican, Michael A. Currington, Michael J. Biercuk, Ting Rei Tan, Cornelius Hempel, Ivan Kassal

Preparations for Quantum Simulations of Quantum Chromodynamics in 1+1 Dimensions: (II) Single-Baryon β-Decay in Real Time
Roland C. Farrell, Ivan A. Chernyshev, Sarah J. M. Powell, Nikita A. Zemlevskiy, Marc Illa, Martin J. Savage

Robust Oscillator-Mediated Phase Gates Driven by Low-Intensity Pulses
I. Arrazola, J. Casanova

Rotational control of reactivity: Reaction of SiO+ ions in extreme rotational states
Sruthi Venkataramanababu, Anyang Li, Ivan Antonov, James Dragan, Patrick R. Stollenwerk, Hua Guo, Brian C. Odom

Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter
Andrea Rodriguez-Blanco, K. Birgitta Whaley, Alejandro Bermudez

Thermodynamics and Fluctuations in Quantum Heat Engines under Reservoir Squeezing
Yang Xiao, Dehua Liu, Jizhou He, Wu-Ming Liu, L. -L. Yan, Jianhui Wang

Trap-assisted complexes in cold atom-ion collisions
H. Hirzler, E. Trimby, R. Gerritsma, A. Safavi-Naini, J. Pérez-Ríos

Unitary matrix integrals, symmetric polynomials, and long-range random walk models
Ward L. Vleeshouwers, Vladimir Gritsev

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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