ITN Newsletter – July 2021

ITN Newsletter – July 2021

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The call for abstracts for the second edition of ECCTI - the Early Career Conference in Trapped Ions - which will take place in January 2022 in Geneva is open until 1st September 2021 !!!

Dear all,
the call for abstracts for the second edition of ECCTI  – the Early Career Conference in Trapped Ions – which will take place in January in Geneva is open until 1st September 2021 !!

Your editorial team



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



Summer School: Machine Learning in Quantum Physics and Chemistry will be held in Warsaw (Poland) at the Faculty of Physics of the University of Warsaw, 24 August – 3 September 2021 Details

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 will open on the 1st June 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


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

The Infineon trapped-ion team is looking for a full-time engineer to accelerate our trapped-ion quantum processor development. Details

Infineon is offering a doctoral thesis in the field of trapped-ion quantum computing, focusing on material aspects of trapped-ion quantum processors. Details

The Institute of Quantum Optics (U Hannover) is inviting applications for a PhD student position on sympathetic cooling and quantum logic spectroscopy of (anti-)protons by laser-cooled ions. We are part of the BASE collaboration. Contact: Christian Ospelkaus

A permanent position (at postdoc level) is available in the Yb+ optical clock team at the UK’s National Physical Laboratory. LINK. Contact: Rachel Godun

A postdoctoral position and a PhD position are open in quantum technologies focusing on the design of ion trap quantum processors at the Leibniz University of Hannover, Germany. Details  HERE and HERE

A postdoctoral position at the QUEST Institute for Experimental Quantum Metrology at PTB, to perform precision tests of fundamental physics via quantum logic spectroscopy of highly charged ions. Details and contact Steven King

A PhD position at the QUEST Institute for Experimental Quantum Metrology at PTB, to further develop our quantum logic clock based on aluminum ions. Details and contact: Nicolas Spethmann

A PhD position at the QUEST Institute for Experimental Quantum Metrology at PTB (based at our Hannover site), to develop a transportable optical clock based on aluminum ions for applications such as relativistic geodesy. Details and contact : Stephan Hannig

A PhD position at the QUEST Institute for Experimental Quantum Metrology at PTB, to use entanglement and dynamic decoupling techniques to enhance our calcium-based multi-ion experiment. Details and contact Nicolas Spethmann

Two PhD positions in the Ultra-Cold Plasma Laboratory (Faculty of Mathematics and Physics, Charles University). Project: Quantum control of electron-Ion recombination. Details. Please contact the group leader (Michal Hejduk) for more information.

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



Please sent informations about your publications to

A compact electron beam ion trap in support of high-temperature plasma diagnostics based on conduction-cooled superconducting coils
B. Bin, B. Lyu, Y. Yang, H. M. Zhang, Q. W. Hao, F. D. Wang, C. Dai, X. W. Du, J. Fu, Y. Y. Li, J. Li and Q. P. Wang
Review of Scientific Instruments 92, 063512 (2021)

A trapped ion atomic clock in space
Iulia Georgescu
Nature Reviews Physics volume 3, page460 (2021)

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)

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)

Compact Ion-Trap Quantum Computing Demonstrator
I. Pogorelov, T. Feldker, Ch. D. Marciniak, L. Postler, G. Jacob, O. Krieglsteiner, V. Podlesnic, M. Meth, V. Negnevitsky, M. Stadler, B. Höfer, C. Wächter, K. Lakhmanskiy, R. Blatt, P. Schindler, and T. Monz
PRX Quantum 2, 020343 (2021)

Demonstration of a trapped-ion atomic clock in space
E. A. Burt, J. D. Prestage, R. L. Tjoelker, D. G. Enzer, D. Kuang, D. W. Murphy, D. E. Robison, J. M. Seubert, R. T. Wang & T. A. Ely
Nature 595, pages 43–47 (2021)

Engineering spin-spin interactions with optical tweezers in trapped ions
J. D. Arias Espinoza, M. Mazzanti, K. Fouka, R. X. Schüssler, Z. Wu, P. Corboz, R. Gerritsma, and A. Safavi-Naini
Phys. Rev. A 104, 013302 (2021)

Entanglement Hamiltonian tomography in quantum simulation
Christian Kokail, Rick van Bijnen, Andreas Elben, Benoît Vermersch & Peter Zoller
Nature Physics (2021)

GSA and ESA dual-wavelength pumped 2.3 μm Tm:YLF laser on the 3H4→3H5 transition
Wang, Fei; Huang, Haitao; Chen, Haiwei; Bao, Yushuo; Li, Zihan; Shen, Deyuan
Chinese Optics Letters 19(9) 091405 (2021)

Heating of a Trapped Ion Induced by Dielectric Materials
Markus Teller, Dario A. Fioretto, Philip C. Holz, Philipp Schindler, Viktor Messerer, Klemens Schüppert, Yueyang Zou, Rainer Blatt, John Chiaverini, Jeremy Sage, and Tracy E. Northup
Phys. Rev. Lett. 126, 230505 (2021)

High power 739 nm VECSELs for future Yb+ ion cooling
Woods, Jonathan R. C.; Kahle, Hermann; Gray, Alan C.; Daykin, Jake; Tropper, Anne C.; Gawith, Corin; Guina, Mircea; Apostolopoulos, Vasilis
Applied Optics 60(3) 676-680 (2021)

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, and Andrew C. Potter
Phys. Rev. Research 3, 033002 (2021)

Ion Clock Makes Maiden Space Voyage
Rachel Berkowitz
Physics 14, 99 (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 quantum metrology in a Penning trap
Javier Cerrillo and Daniel Rodríguez
Europhysics Letters- perspective  134, 38001 (2021)

Non-equilibrium coupling of a quartz resonator to ions for Penning-trap fast resonant detection
Joaquín Berrocal, Steffen Lohse, Francisco Domínguez, Manuel J Gutiérrez, Francisco J Fernández, Michael Block, Juan J García-Ripoll and Daniel Rodríguez
Quantum Science and Technology 6, 044002 (2021)

Pulsed characteristic-function measurement of a thermalizing harmonic oscillator
Ralf Betzholz, Yu Liu, and Jianming Cai
Phys. Rev. A 104, 012421 (2021)

Phase-dependent fluctuations of resonance fluorescence near the coherent population trapping condition
O de los Santos-Sánchez and H M Castro-Beltrán
J. Phys. B: At. Mol. Opt. Phys. 54 055002 (2021)

Photodissociation of [Ar–N2]+ induced by near-IR femtosecond laser fields by ion-trap time-of-flight mass spectrometry
Takahiro Suzuki, Reika Kanya and Kaoru Yamanouchi
J. Chem. Phys. 154, 174303 (2021)

Prospects of a Pb2+ Ion Clock
K. Beloy
Phys. Rev. Lett. 127, 013201 (2021)

Quantum Oscillator Noise Spectroscopy via Displaced Cat States
Alistair R. Milne, Cornelius Hempel, Li Li, Claire L. Edmunds, Harry J. Slatyer, Harrison Ball, Michael R. Hush, and Michael J. Biercuk
Phys. Rev. Lett. 126, 250506 (2021)

Quantum Harmonic Oscillator Spectrum Analyzers
Jonas Keller, Pan-Yu Hou, Katherine C. McCormick, Daniel C. Cole, Stephen D. Erickson, Jenny J. Wu, Andrew C. Wilson, and Dietrich Leibfried
Phys. Rev. Lett. 126, 250507 (2021)

Radial Two-Dimensional Ion Crystals in a Linear Paul Trap
Marissa D’Onofrio, Yuanheng Xie, A. J. Rasmusson, Evangeline Wolanski, Jiafeng Cui, and Philip Richerme
Phys. Rev. Lett. 127, 020503 (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)

Single-Atom Verification of the Noise-Resilient and Fast Characteristics of Universal Nonadiabatic Noncyclic Geometric Quantum Gates
J. W. Zhang, L.-L. Yan, J. C. Li, G. Y. Ding, J. T. Bu, L. Chen, S.-L. Su, F. Zhou, and M. Feng
Phys. Rev. Lett. 127, 030502 (2021)

Study on the high-efficiency sympathetic cooling of mixed ion system with a large mass-to-charge ratio difference in a dual radio-frequency field by numerical simulations
Yansong Meng and Lijun Du
Eur. Phys. J. D 75, 19 (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)

Three-body QED test and fifth-force constraint from vibrations and rotations of HD+
M. Germann, S. Patra, J.-Ph. Karr, L. Hilico, V. I. Korobov, E. J. Salumbides, K. S. E. Eikema, W. Ubachs, and J. C. J. Koelemeij
Phys. Rev. Research 3, L022028 (2021)


139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of 9Be+ ions in a Penning trap
Johannes Mielke, Julian Pick, Julia A. Coenders, Teresa Meiners, Malte Niemann, Juan M. Cornejo, Stefan Ulmer, Christian Ospelkaus

A Quantum Dot Plot Generation Algorithm for Pairwise Sequence Alignment
Joseph Clapis

Advancing Hybrid Quantum-Classical Algorithms via Mean-Operators
Donggyu Kim, Pureum Noh, Hyun-Yong Lee, Eun-Gook Moon

An open-endcap blade trap for radial-2D ion crystals
Yuanheng Xie, Jiafeng Cui, Marissa D’Onofrio, A. J. Rasmusson, Stephen W. Howell, Philip Richerme

CPT test with (anti-)proton magnetic moments based on quantum logic cooling and readout
M. Niemann, A. -G. Paschke, T. Dubielzig, S. Ulmer, C. Ospelkaus

Classical Shadow Tomography with Locally Scrambled Quantum Dynamics
Hong-Ye Hu, Soonwon Choi, Yi-Zhuang You

Coupling two laser-cooled ions via a room-temperature conductor
Da An, Alberto M. Alonso, Clemens Matthiesen, Hartmut Häffner

Cryogenic Penning-Trap Apparatus for Precision Experiments with Sympathetically Cooled (anti)protons
M. Niemann, T. Meiners, J. Mielke, N. Pulido, J. Schaper, M. J. Borchert, J. M. Cornejo, A. -G. Paschke, G. Zarantonello, H. Hahn, T. Lang, C. Manzoni, M. Marangoni, G. Cerullo, U. Morgner, J. -A. Fenske, A. Bautista-Salvador, R. Lehnert, S. Ulmer, C. Ospelkaus

Dissipative Floquet Dynamics: from Steady State to Measurement Induced Criticality in Trapped-ion Chains
Piotr Sierant, Giuliano Chiriacò, Federica M. Surace, Shraddha Sharma, Xhek Turkeshi, Marcello Dalmonte, Rosario Fazio, Guido Pagano

Efficient quantum programming using EASE gates on a trapped-ion quantum computer
Nikodem Grzesiak, Andrii Maksymov, Pradeep Niroula, Yunseong Nam

Fault-tolerant parity readout on a shuttling-based trapped-ion quantum computer
Janine Hilder, Daniel Pijn, Oleksiy Onishchenko, Alexander Stahl, Maximilian Orth, Björn Lekitsch, Andrea Rodriguez-Blanco, Markus Müller, Ferdinand Schmidt-Kaler, Ulrich Poschinger

Generation of a maximally entangled state using collective optical pumping
M. Malinowski, C. Zhang, V. Negnevitsky, I. Rojkov, F. Reiter, T. -L. Nguyen, M. Stadler, D. Kienzler, K. K. Mehta, J. P. Home

How Correlated Adsorbate Dynamics on Realistic Substrates Can Give Rise to 1/ω Electric-Field Noise in Surface Ion Traps
Benjamin Foulon, Keith G. Ray, Chang-Eun Kim, Yuan Liu, Brenda M. Rubenstein, Vincenzo Lordi

Micromotion minimization using Ramsey interferometry
Gerard Higgins, Shalina Salim, Chi Zhang, Harry Parke, Fabian Pokorny, Markus Hennrich

Micromotion minimisation by synchronous detection of parametrically excited motion
D. P. Nadlinger, P. Drmota, D. Main, B. C. Nichol, G. Araneda, R. Srinivas, L. J. Stephenson, C. J. Ballance, D. M. Lucas

Optimal metrology with variational quantum circuits on trapped ions
Christian D. Marciniak, Thomas Feldker, Ivan Pogorelov, Raphael Kaubruegger, Denis V. Vasilyev, Rick van Bijnen, Philipp Schindler, Peter Zoller, Rainer Blatt, Thomas Monz

Prospects for single photon sideband cooling of optically trapped neutral atoms
Federico Berto, Elia Perego, Lucia Duca, Carlo Sias

Quantum Zeno effect in self-sustaining systems: suppressing phase diffusion via repeated measurements
Wenlin Li, Najmeh Es’haqi-Sani, Wen-Zhao Zhang, David Vitali

Realization of real-time fault-tolerant quantum error correction
C. Ryan-Anderson, J. G. Bohnet, K. Lee, D. Gresh, A. Hankin, J. P. Gaebler, D. Francois, A. Chernoguzov, D. Lucchetti, N. C. Brown, T. M. Gatterman, S. K. Halit, K. Gilmore, J. Gerber, B. Neyenhuis, D. Hayes, R. P. Stutz

Realizing a dynamical topological phase in a trapped-ion quantum simulator
Philipp T. Dumitrescu, Justin Bohnet, John Gaebler, Aaron Hankin, David Hayes, Ajesh Kumar, Brian Neyenhuis, Romain Vasseur, Andrew C. Potter

Realizing coherently convertible dual-type qubits with the same ion species
H. -X. Yang, J. -Y. Ma, Y. -K. Wu, Y. Wang, M. -M. Cao, W. -X. Guo, Y. -Y. Huang, L. Feng, Z. -C. Zhou, L. -M. Duan

Realisation of homogeneous ion chain using surface traps
J. Pedregosa-Gutierrez, M. Mukherjee

Realization of an ion trap quantum classifier
Tarun Dutta, Adrián Pérez-Salinas, Jasper Phua Sing Cheng, José Ignacio Latorre, Manas Mukherjee

Relativistic meson spectra on ion-trap quantum simulators
Johannes Knaute, Philipp Hauke

Study of radial motion phase advance during motion excitations in a Penning trap and accuracy of JYFLTRAP mass spectrometer
D. A. Nesterenko, T. Eronen, Z. Ge, A. Kankainen, M. Vilen

Tailored Ion Beam for Precise Color Center Creation
A. Tobalina, C. Munuera-Javaloy, E. Torrontegui, J. G. Muga, J. Casanova

Thermally induced entanglement of atomic oscillators
Pradip Laha, Lukáš Slodička, Darren Moore, Radim Filip

Towards Sympathetic Cooling of Single (Anti-)Protons
T. Meiners, M. Niemann, J. Mielke, M. Borchert, N. Pulido, J. M. Cornejo, S. Ulmer, C. Ospelkaus


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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