Foreword
As we embrace the spirit of Easter, we’re also filled with gratitude for the wonderful community that surrounds us. Since we kicked off our newsletter again in January 2024, we’ve been overwhelmed by the positive feedback and the surge of new subscribers. We’re truly grateful for the ongoing engagement from the iontrap community, who keep the conversation lively by sharing their latest news, events, jobs, publications, and editorials. Your contributions make our newsletter vibrant and enriching.
Please continue to send us your thoughts to iontrap.newsletter@gmail.com.
Events
QCTiP 2024 (Quantum Computing Theory in Practice) conference, organized by the Quantum Software Lab at the University of Edinburgh, is planned for April 16th to 18th, 2024. Details
Young Researchers School on Topological aspects of low-dimensional quantum physics is a meeting for young researchers, designed by young researchers, accessible to PhD students in theoretical physics as well as to exceptional MSc students. April 21-27, 2024, Maynooth University, Ireland. Details
Workshop on Quantum Mixtures of Atoms and Ions, Amsterdam will take place rom June 11-13, 2024. The conference aims to bring together experts in the field of cold and ultracold mixtures of atoms and ions and will cover various applications of these systems, including quantum chemistry, quantum impurity physics, ultracold buffer gas cooling, Feshbach resonances, quantum information and spin dynamics. Details
Quantum meets ’24 is a co-created collection of free events presented by Quantum Delta NL from June 11-13, 2024 in Amsterdam, the Netherlands. Details
YAO2024 (Young Atom Opticians) conference, organised this year by CESQ at the University of Strasbourg, June 30th to July 5th, 2024. Details
Early Career Conference in Trapped Ions (ECCTI) 2024
ECCTI is intended to connect a broad community with very diverse scientific goals with common technical challenges. The event will have a focus on Atomic Clocks, Quantum Information & Computation, Quantum Simulation, Quantum Technologies, Antimatter Physics, Precision & Molecular Spectroscopy, and Nuclear Physics. The event will take place from July 7-12, 2024, at the Viktor-Franz-Hess Haus in Austria. Details
ICAP 2024: The 28th International Conference on Atomic Physics, July 14-19, 2024 at the Imperial College, London. Details
QSim 2024, the 2nd Annual Conference on Quantum Simulation in Rhode Island, USA, August 12-16, 2024. The conference will be preceded by a 3-day summer school from August 9-11 at the same location. The focus of the summer school will be on many-body systems, combining both theoretical and numerical techniques with examples from quantum hardware experiments. 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” (www.amo-seminar.com): Fridays, 7pm (UTC)
The “Quantum Science Seminar” (http://quantumscienceseminar.com/): on Thursdays, 5 pm
Jobs
PhD position available at VU Amsterdam – Precision measurements of trapped H2+.
This project is about precision measurements of weakly-bound states of H2+ in the THz range to test QED predictions. Molecular ions are selectively prepared using Rydberg states, trapped, and sympathetically cooled using Be+ ions.
Contact: Max Beyer (m.beyer@vu.nl)
Details
The research group of C. Ospelkaus at the University of Hannover offers a team lead position (postdoc) in the field of surface electrode trap design for quantum computing.
Contact: Dr. Christian Ospelkaus (join-the-ions@iqo.uni-hannover.de )
Details
Several PostDoc and PhD positions available at PTB in Braunschweig and Leibniz University Hannover in the Quantum Logic Spectroscopy Group of Piet Schmidt . Topics include laboratory and transportable aluminium ion clocks, multi-ion calcium clock using dynamical decoupling and entanglement, as well as highly charged ion clocks.
Contact: Dr. Piet Schmidt (Piet.Schmidt@quantummetrology.de)
PhD and postdoc positions available in the group of Tanja Mehlstäubler at PTB, working on optical clocks based on trapped ion Coulomb crystals. Topics include new interrogation protocols for multi-ensemble clocks, quantum-enhanced clock operation, ground-state cooling of mixed-species Coulomb crystals and tests of fundamental physics with precision spectroscopy.
Contact: Prof. Dr. Tanja Mehlstäubler (tanja.mehlstaeubler@quantummetrology.de).
Details
The research group of C. Ospelkaus at the University of Hannover is looking for a postdoctoral research associate on their Penning trap experiment, which aims to implement quantum logic spectroscopy of (anti-)protons for tests of the fundamental CPT symmetry as part of the BASE collaboration.
Contact: Dr. Christian Ospelkaus (christian.ospelkaus@iqo.uni-hannover.de)
A postdoc position is available at the Old Dominion University in Norfolk, Virginia, USA on a project trapping lutetium ions for precision measurements.
Contact: Dr. Matt Grau (mgrau@odu.edu).
Multiple postdoc positions are available in the NIST Ion Storage Group in Colorado, USA. Topics include quantum simulation and sensing in a Penning trap, trapped-ion quantum computing, trapped-ion optical clocks, and quantum state control and precision spectroscopy of single molecular ions.
Contact: John Bollinger or any of the NIST Ion Storage group staff
Details
The Imperial College Particle Physics Group has a postgraduate studentship available to work on laser measurements of cold exotic helium atoms that contain antiprotons at the new ELENA facility of CERN in Geneva. This allows us to probe the matter-antimatter symmetry and determine the mass ratio between an antiproton and electron. We hope to be relatively flexible with regards to the exact PhD topic depending on the candidate’s interests. The studentship covers a maintenance bursary similar to standard STFC studentships.
Contact: m.hori@imperial.ac.uk
PhD position in QUantum-Enhanced Sensing with Trapped IONs (QUESTIONs) at the Vrije Universiteit Amsterdam in the group of Dr. Laura Dreissen. In the project you will develop a trapped-ion system based on Ba+ for quantum sensing and metrology using entangled states.
Contact: Dr. Laura S. Dreissen (l.s.dreissen@vu.nl)
Details
The Ion trap systems team at Infineon is looking for an ion trap development engineer. This is a full-time, permanent position in Austria with an entry level of 3-5 years.
Details
Various positions at ARCNL
ARCNL is a public-private partnership between the Foundation for Fundamental Research on Matter (FOM), the University of Amsterdam (UvA), the VU University Amsterdam (VU) and the semiconductor equipment manufacturer ASML. ARCNL is seeking candidates trained in experimental physics, chemistry, materials science or engineering with an interest in cutting-edge research, combining fundamental and applied aspects.
Details
Publications
Please send information about your publications to iontrap.newsletter@gmail.com
A versatile apparatus for simultaneous trapping of multiple species of ultracold atoms and ions to enable studies of low energy collisions and cold chemistry
Special Collection: 2024 JCP Emerging Investigators Special Collection
Bubai Rahaman , Satyabrata Baidya ,Sourav Dutta
J. Chem. Phys. 160, 064201 (2024)Competition of the Breit interaction in angular anisotropy of Auger electrons
Z. W. Wu, Y. Li, and S. Fritzsche
Phys. Rev. A 109, 032817 – Published 21 March 2024
Correlation Spectroscopy with Multiqubit-Enhanced Phase Estimation
H. Hainzer, D. Kiesenhofer, T. Ollikainen, M. Bock, F. Kranzl, M. K. Joshi, G. Yoeli, R. Blatt, T. Gefen, and C. F. Roos
Phys. Rev. X 14, 011033 (2024)
Demonstration of a parity-time-symmetry-breaking phase transition using superconducting and trapped-ion qutrits
Alena S. Kazmina, Ilia V. Zalivako, Alexander S. Borisenko, Nikita A. Nemkov, Anastasiia S. Nikolaeva, Ilya A. Simakov, Arina V. Kuznetsova, Elena Yu. Egorova, Kristina P. Galstyan, Nikita V. Semenin, Andrey E. Korolkov, Ilya N. Moskalenko, Nikolay N. Abramov, Ilya S. Besedin, Daria A. Kalacheva, Viktor B. Lubsanov, Aleksey N. Bolgar, Evgeniy O. Kiktenko, Ksenia Yu. Khabarova, Alexey Galda, Ilya A. Semerikov, Nikolay N. Kolachevsky, Nataliya Maleeva, and Aleksey K. Fedorov
Phys. Rev. A 109, 032619 (2024)
Differentiating enantiomers by directional rotation of ions in a mass spectrometer
XIAOYU ZHOU, ZHUOFAN WANG, SHUAI LI, XIANLE RONG, JIEXUN BU, QIANG LIU, AND ZHENG OUYANG
SCIENCE, 8 Feb 2024, Vol 383, Issue 6683, pp. 612-618
Experimental and theoretical Ritz–Rydberg analysis of the electronic structure of highly charged ions of lead and bismuth by optical spectroscopy
Michael K Rosner, Nils-Holger Rehbehn and José R Crespo López-Urrutia
2024 J. Phys. B: At. Mol. Opt. Phys. 57 055001
Experimental Proposal on non-Hermitian Skin Effect by Two-dimensional Quantum Walk with a Single Trapped Ion
Waner Hou, Hao Tang, Qin Xu and Yiheng Lin
2024 Chinese Phys. Lett.
Experimental verification of quantum contextuality using a weak measurement in a single trapped ion
Chunwang Wu, Han Hu, Jie Zhang, Wenbo Su, Manchao Zhang, Tianxiang Zhan, Qingqing Qin, Wei Wu, and Pingxing Chen
Phys. Rev. A 109, 032211 (2024) –
First-order crosstalk mitigation in parallel quantum gates driven with multi-photon transitions
Matthew N. H. Chow, Christopher G. Yale, Ashlyn D. Burch, Megan Ivory, Daniel S. Lobser, Melissa C. Revelle, Susan M. Clark
Journal: Applied Physics Letters
Appl. Phys. Lett. 124, 044002 (2024)
Impulsive spin-motion entanglement for fast quantum computation and sensing
Randall Putnam, Adam D. West, Wesley C. Campbell, and Paul Hamilton
Phys. Rev. A 109, 032614 (2024) –
Laser-type cooling with unfiltered sunlight
Amanda Younes and Wesley C. Campbell
Phys. Rev. E 109, 034109 (2024) –
Levitated Nanoresonator Breaks Quality-Factor Record
M. Rinni, March 27, 2024• Physics 17, s38
Opposite Effects of the Rotational and Translational Energy on the Rates of Ion-Molecule Reactions near 0 K: The D+2+NH3 and D+2+ND3 Reactions
Raphaël Hahn, David Schlander, Valentina Zhelyazkova, and Frédéric Merkt
Phys. Rev. X 14, 011034 (2024)
Passive dynamical decoupling of trapped-ion qubits and qudits
R. T. Sutherland and S. D. Erickson
Phys. Rev. A 109, 022620 (2024) –
Penning micro-trap for quantum computing
Shreyans Jain, Tobias Sägesser, Pavel Hrmo, Celeste Torkzaban, Martin Stadler, Robin Oswald, Chris Axline, Amado Bautista-Salvador, Christian Ospelkaus, Daniel Kienzler & Jonathan Home
Nature volume 627, pages510–514 (2024)
Quantum logic control and precision measurements of molecular ions in a ring trap: An approach for testing fundamental symmetries
Yan Zhou, Joshua O. Island, and Matt Grau
Phys. Rev. A 109, 033107 (2024)
Realizing Synthetic Dimensions and Artificial Magnetic Flux in a Trapped-Ion Quantum Simulator
Y. Wang, Y.-K. Wu, Y. Jiang, M.-L. Cai, B.-W. Li, Q.-X. Mei, B.-X. Qi, Z.-C. Zhou, and L.-M. Duan
Phys. Rev. Lett. 132, 130601 (2024) –
Resistive cooling of ions’ center-of-mass energy in a Penning trap on millisecond time scales
Markus Kiffer, Stefan Ringleb, Thomas Stöhlker, and Manuel Vogel
Phys. Rev. A 109, 033102 (2024) –
Sympathetic cooling of trapped Th3+ alpha-recoil ions for laser spectroscopy
G. Zitzer, J. Tiedau, M. V. Okhapkin, K. Zhang, C. Mokry, J. Runke, Ch. E. Düllmann, and E. Peik
Phys. Rev. A 109, 033116 (2024) –
Two-dimensional ion crystals in a hybrid optical cavity trap for quantum information processing
Zewen Sun, Yi Hong Teoh, Fereshteh Rajabi, and Rajibul Islam
Phys. Rev. A 109, 032426 (2024) –
Ultrahigh Quality Factor of a Levitated Nanomechanical Oscillator
Lorenzo Dania, Dmitry S. Bykov, Florian Goschin, Markus Teller, Abderrahmane Kassid, and Tracy E. Northup
Phys. Rev. Lett. 132, 133602 (2024)
Preprints
A comparison of continuous and pulsed sideband cooling on an electric quadrupole transition
Authors: Evan C. Reed, Lu Qi, Kenneth R. BrownA nanoparticle stored with an atomic ion in a linear Paul trap
Authors: Dmitry S. Bykov, Lorenzo Dania, Florian Goschin, Tracy E. Northup
An 115In+-172Yb+ Coulomb crystal clock with 2.5×10−18 systematic uncertainty
Authors: H. N. Hausser, J. Keller, T. Nordmann, N. M. Bhatt, J. Kiethe, H. Liu, M. von Boehn, J. Rahm, S. Weyers, E. Benkler, B. Lipphardt, S. Doerscher, K. Stahl, J. Klose, C. Lisdat, M. Filzinger, N. Huntemann, E. Peik, T. E. Mehlstäubler
CETASim: A numerical tool for beam collective effect study in storage rings
Authors: Chao Li, Yong-Chul Chae
Compressed-sensing Lindbladian quantum tomography with trapped ions
Authors: Dmitrii Dobrynin, Lorenzo Cardarelli, Markus Müller, Alejandro Bermudez
Cooling trapped ions with phonon rapid adiabatic passage
Authors: M. I. Fabrikant, P. Lauria, I. S. Madjarov, W. C. Burton, R. T. Sutherland
Determination of principal axes orientation in an ion trap using matter-wave interference
Authors: Ryoichi Saito, Takashi Mukaiyama
Deterministic preparation of a dual-species two-ion crystal
Authors: Maximilian J. Zawierucha, Till Rehmert, Jonas Keller, Tanja E. Mehlstäubler, Piet O. Schmidt, Fabian Wolf
Dynamic laser ablation loading of a linear Paul trap
Authors: Lin Li, Zi Li, Xia Hua, Xin Tong
End-to-end variational quantum sensing
Authors: Benjamin MacLellan, Piotr Roztocki, Stefanie Czischek, Roger G. Melko
Enhanced micromotion compensation using a phase modulated light field
Authors: K. J. Arnold, N. Jayjong, M. L. D. Kang, Qin Qichen, Zhao Zhang, Qi Zhao, M. D. Barrett
Fast, robust and laser-free universal entangling gates for trapped-ion quantum computing
Authors: Markus Nünnerich, Daniel Cohen, Patrick Barthel, Patrick H. Huber, Dorna Niroomand, Alex Retzker, Christof Wunderlich
Fault Localization in a Microfabricated Surface Ion Trap using Diamond Nitrogen-Vacancy Center Magnetometry
Authors: Pauli Kehayias, Matthew A. Delaney, Raymond A. Haltli, Susan M. Clark, Melissa C. Revelle, Andrew M. Mounce
Fractal ground state of ion chains in periodic potentials
Authors: Raphaël Menu, Jorge Yago Malo, Vladan Vuletić, Maria Luisa Chiofalo, Giovanna Morigi
Hamiltonian-reconstruction distance as a success metric for the Variational Quantum Eigensolver
Authors: Leo Joon Il Moon, Mandar M. Sohoni, Michael A. Shimizu, Praveen Viswanathan, Kevin Zhang, Eun-Ah Kim, Peter L. McMahon
Hardware requirements for trapped-ion based verifiable blind quantum computing with a measurement-only client
Authors: Janice van Dam, Guus Avis, Tzula B Propp, Francisco Ferreira da Silva, Joshua A Slater, Tracy E Northup, Stephanie Wehner
High-Fidelity Detection on 171Yb+ Qubit via 2D3/2 Shelving
Authors: Xueying Mai, Liyun Zhang, Yao Lu
Improved performance of the Bacon-Shor code with Steane’s syndrome extraction method
Authors: Guillermo Escobar-Arrieta, Mauricio Gutiérrez
Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL
Authors: A. Jaries, M. Stryjczyk, A. Kankainen, L. Al Ayoubi, O. Beliuskina, L. Canete, R. P. de Groote, C. Delafosse, P. Delahaye, T. Eronen, M. Flayol, Z. Ge, S. Geldhof, W. Gins, M. Hukkanen, P. Imgram, D. Kahl, J. Kostensalo, S. Kujanpää, D. Kumar, I. D. Moore, M. Mougeot, D. A. Nesterenko, S. Nikas, D. Patel , et al. (14 additional authors not shown)
Iterative Confinement of Ions via the Quantum Zeno Effect: Probing Paradoxical Energy Consequences
Authors: Varqa Abyaneh
Ion solvation in atomic baths: from snowballs to polarons
Authors: Saajid Chowdhury, Jesús Pérez-Ríos
Mode-resolved thermometry of trapped ion with Deep Learning
Authors: Yi Tao, Ting Chen, Yi Xie, Hongyang Wang, Jie Zhang, Ting Zhang, Pingxing Chen, Wei Wu
Multi-junction surface ion trap for quantum computing
Authors: J. D. Sterk, M. G. Blain, M. Delaney, R. Haltli, E. Heller, A. L. Holterhoff, T. Jennings, N. Jimenez, A. Kozhanov, Z. Meinelt, E. Ou, J. Van Der Wall, C. Noel, D. Stick
Phononic bright and dark states: Investigating multi-mode light-matter interactions with a single trapped ion
Authors: Harry Parke, Robin Thomm, Alan C. Santos, André Cidrim, Gerard Higgins, Marion Mallweger, Natalia Kuk, Shalina Salim, Romain Bachelard, Celso J. Villas-Boas, Markus Hennrich
Quantum counterdiabatic driving with local control
Authors: Changhao Li, Jiayu Shen, Ruslan Shaydulin, Marco Pistoia
Scalable Multispecies Ion Transport in a Grid Based Surface-Electrode Trap
Authors: Robert D. Delaney, Lucas R. Sletten, Matthew J. Cich, Brian Estey, Maya Fabrikant, David Hayes, Ian M. Hoffman, James Hostetter, Christopher Langer, Steven A. Moses, Abigail R. Perry, Timothy A. Peterson, Andrew Schaffer, Curtis Volin, Grahame Vittorini, William Cody Burton
Sensing Aharonov–Bohm phase using a multiply-orbiting-ion interferometer
Authors: Ryoichi Saito, Takashi Mukaiyama
Simulating Meson Scattering on Spin Quantum Simulators
Authors: Elizabeth R. Bennewitz, Brayden Ware, Alexander Schuckert, Alessio Lerose, Federica M. Surace, Ron Belyansky, William Morong, De Luo, Arinjoy De, Kate S. Collins, Or Katz, Christopher Monroe, Zohreh Davoudi, Alexey V. Gorshkov
Squeezing, trisqueezing, and quadsqueezing in a spin-oscillator system
Authors: O. Băzăvan, S. Saner, D. J. Webb, E. M. Ainley, P. Drmota, D. P. Nadlinger, G. Araneda, D. M. Lucas, C. J. Ballance, R. Srinivas
Technologies for Modulation of Visible and Near-UV Light and their Applications
Authors: Sanghyo Park, Milica Notaros, Aseema Mohanty, Donggyu Kim, Jelena Notaros, Sara Mouradian
Trapped ion qubit and clock operations with a visible wavelength photonic coil resonator stabilized integrated Brillouin laser
Authors: Nitesh Chauhan, Christopher Caron, Jiawei Wang, Andrei Isichenko, Nishat Helaly, Kaikai Liu, Robert J. Niffenegger, Daniel J. Blumenthal
Ultra-high numerical aperture waveguide-integrated meta beam shaper
Authors: Hrishikesh Iyer, Yurii Vlasov