Graduates

Graduated 2025

Nonequilibrium Properties of Strongly Correlated One-dimensional Quantum Gases

Publications

• Lieb excitations and topological flat mode of the spectral function of a Tonks-Girardeau gas in a Kronig-Penney potential
  Wen-Bin He, Giedrius Žlabys, Hoshu Hiyane, Sarika Sasidharan Nair, and Thomas Busch
  Phys. Rev. A 111, 013312 (2025)
• Quantum soliton-trains of strongly correlated impurities in Bose-Einstein condensates
  Hoshu Hiyane, Thomas Busch, and Thomás Fogarty
  Phys. Rev. Research 6, L032040 (2024)
• Collective excitations of a Bose-condensed gas: Fate of second sound in the crossover regime between hydrodynamic and collisionless regimes
  Hoshu Hiyane, Shohei Watabe, and Tetsuro Nikuni
  Phys. Rev. A 109, 033302 (2024)

Graduated 2025

Role of Statistics as a Thermodynamic Resource in Quantum Engines

Publications

• Leveraging quantum statistics to enhance heat engines
  Keerthy Menon, Thomas Busch, Thomás Fogarty
  arXiv:2503.19341
• A quantum engine in the BEC–BCS crossover
  J. Koch, K. Menon, E. Cuestas, S. Barbosa, E. Lutz, T. Fogarty, Th. Busch, and A. Widera
  Nature volume 621, pages 723–727 (2023)

Graduated  2025

Chaos, Correlations and Entanglement in Strongly-correlated 1D Mixtures of Ultra-cold Bosons

Publications

• Engineering impurity Bell states through coupling with a quantum bath
  Tran Duong Anh-Tai1, Thomás Fogarty, Sergi de María-García, Thomas Busch, and Miguel A. García-March
  Phys. Rev. Research 6, 043042 (2024)
• Variational quantum algorithm for ergotropy estimation in quantum many-body batteries
  Duc Tuan Hoang, Friederike Metz, Andreas Thomasen, Tran Duong Anh-Tai, Thomas Busch, Thomás Fogarty
  Phys. Rev. Research 6, 013038 (2024)
• Quantum chaos in interacting Bose-Bose mixtures
  Tran Duong Anh-Tai, Mathias Mikkelsen, Thomas Busch, Thomás Fogarty
  SciPost Phys. 15, 048 (2023).

Life after OIST

Post-Doctoral Fellow, Center for Quantum Research and Technology, University of Oklahoma, USA

Graduated  2024

Ultracold Atoms: Applications in Metrology and Fundamental Properties of Quantum Droplets

Publications

• Phases and dynamics of few fermionic impurities immersed in two-dimensional boson droplets
  Jose Carlos Pelayo, Thomás Fogarty, Thomas Busch, and Simeon I. Mistakidis
  Phys. Rev. Research 6, 033219 (2024)
• Distributed quantum sensing with optical lattices
  J.C. Pelayo, K. Gietka, and Th. Busch
  Phys. Rev. A 107, 033318 (2023)
• Bloch oscillations in supersolids
  Muhammad S. Hasan, J. Polo, J.C. Pelayo, Th. Busch
  J. Phys. B: At. Mol. Opt. Phys. 55 135302 (2022)

Life after OIST

Postdoctoral researcher, Kindai University, Japan

Graduated  2024

Dynamics of Complex Quantum Systems - Engineering and Control in Cold Atomic Systems

Publications

• High fidelity control of a many-body Tonks-Girardeau gas with an effective mean-field approach
  Muhammad S. Hasan, T. Fogarty, J. Li, A. Ruschhaupt, and Th. Busch
  Phys. Rev. Research 6, 023114 (2024)
• Bloch oscillations in supersolids
  Muhammad S. Hasan, J. Polo, J.C. Pelayo, Th. Busch
  J. Phys. B: At. Mol. Opt. Phys. 55 135302 (2022)

Life after OIST

Postdoctoral Research Fellow, Institute of Atomic and Molecular Sciences, Academia Sinica, Taiwan

Graduated  2024

Control of Cold Atomic Systems for Quantum Heat Engines

Publications

• Dynamical invariant based shortcut to equilibration
  M Boubakour, S Endo, T Fogarty, T Busch
  arXiv preprint arXiv:2401.11659
• Interaction enhanced quantum heat engine
  Mohamed Boubakour, Thomás Fogarty, and Thomas Busch
  Phys. Rev. Research 5, 013088 (2023)

Life after OIST

Postdoc Researcher, University of Lorraine, France

Graduated 2022

Machine Learning Applications for the Study and Control of Quantum Systems

Publications

• Two-leg ladder Bose Hubbard models with staggered fluxes
  Rashi Sachdeva, Friederike Metz, Manpreet Singh, Tapan Mishra, Thomas Busch
  Phys. Rev. A 98, 06361 (2018).
• Universal and optimal coin sequences for high entanglement generation in 1D discrete time quantum walks
  A. Gratsea, F. Metz, and Th. Busch
  J. Phys. A: Math. Theor. 53 44530 (2020).
• Deep-learning-based quantum vortex detection in atomic Bose–Einstein condensates
  Friederike Metz, Juan Polo, Natalya Weber and Thomas Busch
  Mach. Learn.: Sci. Technol. 2 035019 (2021)
• Variational quantum anomaly detection: Unsupervised mapping of phase diagrams on a physical quantum computer
  Korbinian Kottmann, Friederike Metz, Joana Fraxanet, Niccolo Baldelli
  Phys. Rev. Research 3, 043184 (2021)
• Self-Correcting Quantum Many-Body Control using Reinforcement Learning with Tensor Networks
  Friederike Metz, Marin Bukov
  arXiv:2201.11790 (2022)

Graduated 2022

Supersymmetry and Nonequilibrium Quantum Dynamics

Publications

• Non-equilibrium many-body dynamics in supersymmetric quenching
  Christopher Campbell, Thomás Fogarty, Thomas Busch
  Phys. Rev. Research 4, 033014 (2022).
• Quantum control and quantum speed limits in supersymmetric potentials
  Christopher Campbell, Jing Li, Thomas Busch, Thomás Fogarty
  New J. Phys. 24 095001 (2022)

Life after OIST

Postdoctoral Researcher, University of Oulu, Finland

Graduated 2022

Wave Propagation and Light-Matter Interactions in Optical Nanofibers and Discrete Media

Publications

• Fast control of interactions in an ultracold two atom system: Managing correlations and irreversibility
  Thomás Fogarty, Lewis Ruks, Jing Li, and Thomas Busch
  SciPost Phys. 6, 021 (2019).
• Waveguide-induced dispersion interaction between two two-level atoms with orthogonal in-transverse-plane dipoles
  F. Le Kien, L. Ruks, and Th. Busch,
  Appl. Phys. B 125, 205 (2019).
• Coupling between guided modes of two parallel nanofibers
  Fam Le Kien, Lewis Ruks, Sile Nic Chormaic, Thomas Busch
  New J. Phys. 22 123007 (2020)
• Spatial distributions of the fields in guided normal modes of two coupled parallel optical nanofibers
  Fam Le Kien, Lewis Ruks, Sile Nic Chormaic, Thomas Busch
  New J. Phys. 23 043006 (2021).
• Green's functions of and emission into discrete anisotropic and hyperbolic baths
  L. Ruks and Th. Busch
  Phys. Rev. Research 4, 023044 (2022)
• Understanding and Improving Critical Metrology. Quenching Superradiant Light-Matter Systems Beyond the Critical Point
  Karol Gietka, Lewis Ruks, and Thomas Busch
  Quantum 6, 700 (2022)

Life after OIST

Research Associate, NTT Basic Research Laboratories, Japan

Graduated 2022

Controlling Superfluid and Insulating States in Interacting Quantum Gases

Publications

• A Feshbach engine in the Thomas-Fermi regime
  T. Keller, T. Fogarty, J. Li, and Th. Busch
  Phys. Rev. Research 2, 033335 (2020).
• Self-Pinning Transition of a Tonks-Girardeau Gas in a Bose-Einstein Condensate
  Tim Keller, Thomás Fogarty, and Thomas Busch
  Phys. Rev. Lett. 128, 053401 (2022). Editors' Suggestion
• Fermionization of a Few-Body Bose Gas Immersed into a Bose-Einstein Condensate
  Tim Keller, Thomás Fogarty, Thomas Buschar
  Xiv:2302.01743 (2023)

Life after OIST

Postdoctoral Researcher, Waseda University, Japan

Graduated 2021

Atom-Light Interactions via Evanescent Fields

Publications

• Channeling of spontaneous emission from an atom into the fundamental and higher-order modes of a vacuum-clad ultrathin optical fiber
  Fam Le Kien, S. Sahar S. Hejazi, Thomas Busch, Viet Giang Truong, and Síle Nic Chormaic
  Phys. Rev. A 96, 043859 (2017)
• Chiral force of guided light on an atom
  Fam Le Kien, S. Sahar S. Hejazi, Viet Giang Truong, Síle Nic Chormaic, and Thomas Busch
  Phys. Rev. A 97, 063849 (2018)
• Force of light on a two-level atom near an ultrathin optical fiber
  Fam Le Kien, D F Kornovan, S Sahar S Hejazi, Viet Giang Truong, M I Petrov, Sile Nic Chormaic, Thomas Busch
  New J. Phys. 20, 093031 (2018)
• Symmetry breaking in binary Bose-Einstein condensates in the presence of an inhomogeneous artificial gauge field
  S. Sahar S. Hejazi, Juan Polo, Rashi Sachdeva, Thomas Busch
  Phys. Rev. A 102, 053309 (2020)

Life after OIST

Postdoctoral Researcher, Osaka City University, Japan

Graduated 2021

Quenched and Driven Dynamics of One-Dimensional Quantum Systems

Publications

• Optomechanics with a position-modulated Kerr-type nonlinear coupling
  M. Mikkelsen, T. Fogarty, J. Twamley, and Th. Busch
  Phys. Rev. A 96, 043832 (2017)
• Static and dynamic phases of a Tonks-Girardeau gas in an optical lattice
  Mathias Mikkelsen, Thomás Fogarty, Thomas Busch
  New J. Phys. 20, 113011 (2018).

Life after OIST

Postdoctoral Researcher, Kindai University, Japan

Graduated 2021

Control and measurement of non-classical properties of cold atomic and optical systems

Publications

• Dynamical phase transitions and temporal orthogonality in one-dimensional hard-core bosons: from the continuum to the lattice
  Thomás Fogarty, Ayaka Usui, Thomas Busch, Alessandro Silva, and John Goold
  New J. Phys. 19, 113018 (2017)
• Static and dynamic phases of a Tonks-Girardeau gas in an optical lattice
  A Usui, B Buča and J Mur-Petit
  New J. Phys. 20, 103006 (2018).
• Spin-orbit coupling in the presence of strong atomic correlations
  A. Usui, T. Fogarty, S. Campbell, S.A. Gardiner, and Th. Busch
  New J. Phys. 22, 013050 (2020).
• Bayesian parameter estimation using Gaussian states and measurements
  Simon Morelli, Ayaka Usui, Elizabeth Agudelo, Nicolai Friis
  Quantum Sci. Technol. 6 025018 (2021)
• Simulating the same physics with two distinct Hamiltonians
  Karol Gietka, Ayaka Usui, Jianqiao Deng, Thomas Busch
  Phys. Rev. Lett. 126, 160402 (2021)

Life after OIST

Postdoctoral Researcher, Universiy of Barcelona, Spain

Linkedin

Graduated 2019

Massively parallel split-step Fourier techniques for simulating quantum systems on graphics processing units

Publications

• Non-adiabatic generation of NOON states in a Tonks--Girardeau gas
  J. Schloss, A. Benseny, J. Gillet, J. Swain, and Th. Busch
  New J. Phys. 18, 035012 (2016)
• GPUE: Graphics Processing Unit Gross--Pitaevskii Equation solver
  James Schloss and Lee James O'Riordan
  Journal of Open Source Software (2018)
• Chaotic few-body vortex dynamics in rotating Bose-Einstein condensates
  Tiantian Zhang, James Schloss, Andreas Thomasen, Lee James O'Riordan, Thomas Busch, and Angela White
  Phys. Rev. Fluids 4, 054701 (2019).

Life after OIST

Postdoctoral Research Associate, Massachusetts Institute of Technology (USA)

Graduated 2019

Coherent control of charged particle systems strongly interacting with microwave photons

Publications

• Strong coupling of a two-dimensional electron ensemble to a single-mode cavity resonators
  Jiabao Chen, A. A. Zadorozhko, and D. Konstantinov
  Phys. Rev. B 98, 235418(2018)
• Adiabatic preparation of squeezed states of oscillators and large spin systems coupled to a two-level system
  Jiabao Chen, Denis Konstantinov, and Klaus Mølmer
  Phys. Rev. A 99, 013803

Life after OIST

Quantum Computing Software Engineer, QunaSys (Japan)

Graduated 2019

State engineering in one-dimensional quantum gases

Publications

• Robust boson dispenser: Quantum state preparation in interacting many-particle systems
  Irina Reshodko, Albert Benseny, and Thomas Busch
  Phys. Rev. A 96, 023606 (2017)
• Entanglement in Spatial Adiabatic Processes for Interacting Atoms
  Albert Benseny, Irina Reshodko, and Thomas Busch
  Few-Body Syst. 59, 48 (2018)
• Topological states in the Kronig-Penney model with arbitrary scattering potentials
  Irina Reshodko, Albert Benseny, Judit Romhányi, Thomas Busch
  New. J. Phys. 21, 013010 (2019).

Life after OIST

Artificial Intelligence Researcher / Software Developer, WAY (Norway)

See more in a video by OIST addmissions from here.

Graduated 2017

Non-equilibrium vortex dynamics in rapidly rotating Bose-Einstein condensates

Publications

• Coherent transport by adiabatic passage on atom chips
  T. Morgan, L.J. O'Riordan, N. Crowley, B. O'Sullivan, and Th. Busch 
  Phys. Rev. A 88, 053618 (2013)
• Moire super-lattice structures in kicked Bose-Einstein condensates
  L.J. O'Riordan, A. White, and Th. Busch
  Phys. Rev. A 93, 023609 (2016)
• Topological defect dynamics of vortex lattices in Bose-Einstein condensates
  Lee James O'Riordan, Thomas Busch
  Phys. Rev. A 94, 053603 (2016)

Life after OIST

Postdoctoral Research Fellow, Lawrence Berkeley National Laboratory (USA)