Coherent interface between optical and microwave photons on an integrated superconducting atom chip
D. Petrosyan et al.
EPJ Quantum Technology, Vol. 11, Article No. 18 (2024)

Reinforcement Learning in Ultracold Atom Experiments.
M. Reinschmidt, J. Fortágh, A. Günther, V. Volchkov.
arXiV:2306.16764 (2023)

Time-resolved observation of a dynamical phase transition of atoms in a cavity
T. W. Clark, A. Dombi, F. I. B. Williams, Á. Kurkó, J. Fortágh, D. Nagy, A. Vukics, P. Domokos
Phys. Rev. A 105, 063712

Roadmap on Atomtronics: State of the art and perspective
L. Amico, M. Boshier, G. Birkl, A. Minguzzi, C. Miniatura, L.-C. Kwek, D. Aghamalyan, V. Ahufinger, D. Anderson, N. Andrei, A. S. Arnold, M. Baker, T. A. Bell, T. Bland, J. P. Brantut, D. Cassettari, W. J. Chetcuti, F. Chevy, R. Citro, S. De Palo, R. Dumke, M. Edwards, R. Folman, J. Fortagh, S. A. Gardiner et al. (34 additional authors not shown)
AVS Quantum Sci. 3, 039201 (2021)

Collective self-trapping of atoms in a cavity
A. Dombi, T. W. Clark, F. I. B. Williams, F. Jessen, J. Fortágh, D. Nagy, A. Vukics and P. Domokos
New J. Phys. 23, 083036 (2021)

Cavity driven Rabi oscillations between Rydberg states of atoms trapped on a superconducting atom chip
M. Kaiser, C. Glaser, L Y. Ley, J. Grimmel, H. Hattermann, D. Bothner, D. Kölle, R. Kleiner, D. Petrosyan, A. Günther, J. Fortágh
 Phys. Rev. Research 4, 013207

Optimal collection of radiation emitted by a trapped atomic ensemble
A. Kurkó, P. Domokos, A. Vukics, T. Bækkegaard, N.T. Zinner, J. Fortágh and D. Petrosyan
EPJ Quantum Technology 8, 11 (2021)

Controlling the Dipole Blockade and Ionization Rate of Rydberg Atoms in Strong Electric Fields
M. Stecker, R. Nold, L.-M. Steinert, J. Grimmel, D. Petrosyan, J. Fortágh and A. Günther
Phys. Rev. Lett. 125, 103602 (2020)

Absolute frequency measurement of rubidium 5S-6P transitions
C. Glaser, F. Karlewski, J. Kluge, J. Grimmel, M. Kaiser, A. Günther, H. Hattermann, M. Krutzik and J. Fortágh
Phys. Rev. A 102, 012804 (2020)

Outcoupling from a Bose-Einstein condensate in the strong-field limit
C. Arnold, C. Beck, P. Federsel, M. Reinschmidt, J. Fortágh, A. Günther, D. Braun
arXiv:1906.05196

Microwave to optical conversation with atoms on a superconducting chip
D. Petrosyan, K. Moelmer, J. Fortagh and Mark Saffman
New J. Phys. 21, 073033 (2019)

Faithful state transfer between two-level systems via actively cooled finite temperature cavity
L. Sárkány, J. Fortágh and D. Petrosyan
Phys. Rev. A 97, 032341 (2018)

Coupling ultracold atoms to a superconducting coplanar waveguide resonator
H. Hattermann, D. Bothner, L.Y.Ley, B. Ferdinand, D. Wiedmaier, L. Sárkány, R. Kleiner, D. Kölle, J. Fortágh
Nature Communications 8, 2254 (2017)

Entanglement and entropy production in coupled single-mode Bose-Einstein condensates
Izabella Lovas, József Fortágh, Eugene Demler, Gergely Zaránd
Phys. Rev. A 96, Iss. 2, 023615 (2017)

Observation of the motional Stark shift in low magnetic fields
Manuell Kaiser, Jens Grimmel, Lara Torralbo-Campo, Markus Mack, Florian Karlewski, Florian Jessen, Nils Schopohl, József Fortágh
Phys. Rev. A 96, 043401(2017)

A high resolution ion microscope for cold atoms
M. Stecker, H. Schefzyk, J. Fortágh and A. Günther
New J. Phys.19, 043020 (2017)

Noise spectroscopy with a quantum gas
P. Federsel, C. Rogulj, T. Menold, Z. Darázs P. Domokos, A. Günther, and J. Fortágh
Phys. Rev. A 95, 043603 (2017)

Sensing Magnetic Fields with a Giant Quantum Wave
J. Fortágh, A. Günther
Physics 10, 30 (2017)

Second-order correlations in single-particle interferometry
A. Rembold, R. Röpke, G. Schütz, J. Fortágh, A. Stibor, A. Günther
New Journal of Physics - Accepted Manuscript online 29. August 2017 - Open Access

Ionization spectra of highly Stark shifted rubidium Rydberg states
J. Grimmel, M. Stecker, M. Kaiser, F. Karlewski, L. Torralbo-Campo, A. Günther, and J. Fortágh
Phys. Rev. A 96, 013427 (2017)

A high resolution ion microscope for cold atoms
Markus Stecker, Hannah Schefzyk, József Fortágh, Andreas Günther
 New J. Phys. 19 043020

Dynamic of cold-atoms tips in anharmonic potentials
Tobias Menold, Peter Federsel, Carola Rogulj, Hendrik Hölscher, József Fortágh and Andreas Günther
Beilstein J. Nanotechnol. 7, 1543-1555 (2016)

Long-range quantum gate via Rydberg states of atoms in a thermal microwave cavity
Lörinc Sárkány, József Fortágh, David Petrosyan
Phys. Rev. A 92, 030303 (R) (2015)

Spectral response of magnetically trapped Bose gases to weak microwave fields
P. Federsel, C. Rogulj, T. Menold, J. Fortágh, and A. Günther
Phys. Rev. A 92, 033601 (2015)

All-optical measurement of Rydberg state lifetimes
Markus Mack, Jens Grimmel, Florian Karlewski, Lörinc Sárkány Helge Hattermann, József Fortágh
Phys. Rev. A 92, 012517 (2015)

Hybride Quantensysteme aus ultrakalten Atomen und Nanostrukturen
Helge Hattermann, Michael Gierling, József Fortágh
Im Buch: Raum und Materie, Villigst Profile, Schriftenreihe des Evangelischen Studienwerks e.V. Villigst, Band 16
herausgegeben von Knut Berner und Friederike Faß ; Eberhard Müller (Hg);
ISBN 978-3-643-12473-9 LIT Verlag Dr. W. Hopf Berlin 2015

Measurement and numerical calculation of Rubidium Rydberg Stark spectra
Jens Grimmel, Markus Mack, Florian Karlewski, Florian Jessen, Malte Reinschmidt, Nóra Sándor, and József Fortágh
New J. Phys. 17, 053005 (2015)

Quasiclassical theory of quantum defect and spectrum of highly excited rubidium atoms
Ali Sanayei, Nils Schopohl, Jens Grimmel, Markus Mack, Florian Karlewski,, and József Fortágh
Phys. Rev. A 91, 032509 (2015)

State-selective all-optical detection of Rydberg atoms
Florian Karlewski, Markus Mack, Jens Grimmel, Nóra Sándor, and József Fortágh
Phys. Rev. A 91, Iss 4; 043422 (2015)

Sensitivity of ultracold atoms to quantized flux in a superconducting ring
P. Weiss, M. Knufinke, S. Bernon, D. Bothner, L. Sárkány, C. Zimmermann, R. Kleiner, D. Koelle, R. Kleiner, J. Fortágh, and H. Hattermann
Phys. Rev. Lett. 114, 113003 (2015),
Physics Synopsis: Cold Atoms, Meet Flux Quanta

Controlling the magnetic field sensitivity of atomic clock states by microwave dressing
L. Sárkány, P. Weiss, H. Hattermann, and J. Fortágh
Phys. Rev. A 90, 053416 (2014),

Evaporative cooling of cold atoms at surfaces
J. Märkle, A.J. Allen, P. Federsel, B. Jetter, A. Günther, J. Fortágh, N.P. Proukakis, T.E. Judd
Phys. Rev. A 90, 023614 (2014)

Multiatom entanglement in cold Rydberg mixtures
Daniel Cano and József Fortágh
Phys. Rev. A 89, 043413 (2014)

Biprism Electron Interferometry with a Single Atom Tip Source
G. Schütz, A. Rembold, A. Pooch, S. Meier, P. Schneeweiss, A. Rauschenbeutel, A. Günther, W.T. Chang, I.S. Hwang and A. Stibor
Ultramicroscopy 141, 9 (2014)

Correction of Dephasing Oscillations in Matter Wave Interferometry
A. Rembold, G. Schütz, W.T. Chang, A. Stefanov, A. Pooch, I.S. Hwang, A. Günther and A. Stibor
Phys. Rev. A 89, 033635 (2014)

Parametric amplification of the mechanical vibrations of a suspended nanowire by magnetic coupling to a Bose-Einstein Condensate
Z. Darázs, Z. Kurucz, O. Kálmán, T. Kiss, J. Fortágh, P. Domokos
Phys. Rev. Lett. 112, 133603 (2014)

Cold Atom Scanning Probe Microscopy: An Overview
A. Günther, H. Hölscher, J. Fortágh
Book chapter in Fundamentals of Picoscience, ed. Klaus D. Sattler, Taylor & Francis; 2013

Atoms in microtraps
J. Fortágh
Book chapter in the McGraw-Hill Yearbook of Science and Technology 2013

Inductively coupled superconducting half wavelength resonators as persistent current traps for ultracold atoms
D. Bothner, M. Knufinke, H. Hattermann, R. Wölbing, B. Ferdinand, P. Weiss, S. Bernon, J. Fortágh, D. Koelle and R. Kleiner
New J. Phys. 15, 093024 (2013)

Trapping of ultra cold atoms in a 3He/4He dilution refrigerator
F. Jessen, M. Knufinke, S. C. Bell, P. Vergien, H. Hattermann, P. Weiss, M. Rudolph, M. Reinschmidt, K. Meyer, T. Gaber, D. Cano, A. Guenther, S. Bernon, D. Koelle, R. Kleiner, J. Fortágh
Appl. Phys. B 116, Issue 3; 665-671 (2013) DOI 10.1007/s00340-013-5750-5

Manipulation and coherence of ultra-cold atoms on a superconducting atom chip
S. Bernon, H. Hattermann, D. Bothner, M. Knufinke, P. Weiss, F. Jessen, D. Cano, M. Kemmler, R. Kleiner, D. Koelle, J. Fortágh
Nature Communications 4: 2380 (2013) doi:10.1038/ncomms3380 (2013)

Scattering and absorption of ultracold atoms by nanotubes
B. Jetter, J. Märkle, P. Schneeweiss, M. Gierling, S. Scheel, A. Günther, J. Fortágh and T. E. Judd
New J. Phys. 15, 073009 (2013)

Immersing carbon nano-tubes in cold atomic gases
C. T. Weiß, P. V. Mironova, J. Fortágh, W. P. Schleich, R. Walser
Phys. Rev. A 88, No. 4, 043623 (2013)

Loschmidt echo and the many-body orthogonality catastrophe in a qubit-coupled Luttinger liquid
Balázs Dóra, Frank Pollmann, József Fortágh, Gergely Zaránd
Phys. Rev. Lett. 111, 046402 (2013); Cover feature

Scattering of dilute thermal atom clouds on optical Weber beams
C. L. Hernández-Cedillo, S. Bernon, H. Hattermann, J. Fortágh, and R. Jáuregui
Phys. Rev. A 87, 023404 (2013)

Nonadditive potentials between three Rydberg atoms
Daniel Cano and József Fortágh
Phys. Rev. A 86, 043422 (2012)

Dispersion forces between ultracold atoms and a carbon nanotube
P. Schneeweiß, M. Gierling, G. Visanescu, D. P. Kern, T. E. Judd, A. Günther & J. Fortágh
Nature Nanotechnology 7, 515-519 (2012)

Scanning Probes: Cold atoms feel the force
Hendrik Hölscher
Nature Nanotechnology, 7; 484-485 (2012)

Detrimental adsorbate fields in experiments with cold Rydberg clouds near surfaces
H. Hattermann, M. Mack, F. Karlewski, F. Jessen, D. Cano, and J. Fortágh
Phys. Rev. A 86, 022511 (2012 )

Quantum Galvanometer by Interfacing a Vibrating Nanowire and Cold Atoms
O. Kalman, T. Kiss, J. Fortágh, and P. Domokos
Nano Letters 2012, 12, 435-439

Nanotechnologie am Quantenlimit - Eiskalt und unfassbar klein
Andreas Günther & József Fortágh
nanoTECHNOLOGIE aktuell 4, 42-46 (2011)

Mikroskopie mit einer Quantenspitze
Andreas Günther & József Fortágh
Physik in unserer Zeit; Vol. 42, Issue 5; 215-216 (2011)

Cold-atom scanning probe microscopy
M. Gierling, P. Schneeweiss, G. Visanescu, P. Federsel, M. Häffner, D. Kern, T. E. Judd, A. Günther and J. Fortágh
Nature Nanotechnology 6; 446-451 (2011)

News & Views
Scanning probes: Cold-atom microscope shapes up
Christian L. Degen, Jonathan P. Home
Nature Nanotechnology 6, 399–400 (2011)

Experimental system for research on ultracold atomic gases near superconducting microstructures
D. Cano, H. Hattermann, B. Kasch, C. Zimmermann, R. Kleiner, D. Koelle and J. Fortágh
European Physical Journal D 63, 17-23 (2011)

Optimization of plasma-enhanced chemical vapor deposition parameters for the growth of individual vertical carbon nanotubes as field emitters
R. Löffler, M. Häffner, G. Visanescu, H. Weigand, X. Wang, D. Zhang, M. Fleischer, A.J. Meixner, J. Fortágh, D.P. Kern
Carbon Vol. 49, Issue 13, Pages 4197-4203 (2011)

Measurement of absolute transition frequencies of 87Rb nS and nD Rydberg states by means of electromagnetically induced transparency
Markus Mack, Florian Karlewski, Helge Hattermann, Simone Höckh, Florian Jessen, Daniel Cano, and József Fortágh
Phys. Rev. A 83, 052515 (2011)

Sublimation of the Endohedral Fullerene Er3N@C80
Alexander Stibor, Hannah Schefzyk, József Fortágh
Phys. Chem. Chem. Phys.12, 13076-13081 (2010)

Cold atoms near superconductors: atomic spin coherence beyond the Johnson noise limit
B. Kasch, H. Hattermann, D. Cano, T. E. Judd, S. Scheel, C. Zimmermann, R. Kleiner, D. Koelle, and J. Fortágh
New J. Phys. 12, 065024 (2010)

Single-atom detection on a chip: from realization to application
A. Stibor, S. Kühnhold, J. Fortágh, C. Zimmermann, and A. Günther
New J. Phys. 12, 065034 (2010)

Powerful narrow-line source of blue light for laser cooling Yb/Er and Dysprosium atoms
S.Kobtsev, B.Lev, J. Fortágh, V.Baraulya
Proc. SPIE, Vol. 7578, 75782F (2010)

Diffraction and Interference of a Bose-Einstein Condensate Scattered from a Atom Chip-Based Magnetic Lattice
A. Günther, T. E. Judd, J. Fortagh and C. Zimmermann
Book chapter in "Atom Chips"; ed. by Jakob Reichel and Vladan Vuletic; WILEY-VCH-Verlag; 2009
Phys. Rev. Lett. 95, 170405

Integrated Atom Detector Based on Field Ionization near Carbon Nanotubes
B. Grüner, M. Jag, A. Stibor, G. Visanescu, M. Häffner, D. Kern, A. Günther, and J. Fortágh
Phys. Rev. A 80, 063422 (2009)

Observing quantum gases in real time: Single-atom detection on a chip
A. Günther, H. Bender, A. Stibor, J. Fortágh, and C. Zimmermann
Phys. Rev. A 80, 011604(R) (2009)

Meissner effect in superconducting microtraps
D. Cano, B. Kasch, H. Hattermann, R. Kleiner, C. Zimmermann, D. Koelle, and J. Fortágh
Phys. Rev. Lett. 101, 183006 (2008)

Impact of the Meissner effect on magnetic microtraps for neutral atoms near superconducting thin films
D. Cano, B. Kasch, H. Hattermann, D. Koelle, R. Kleiner, C. Zimmermann, and J. Fortágh
Phys. Rev. A 77, 063408 (2008)

A number filter for matter-waves
G. Nandi, A. Sizmann, C. Weiss, J. Fortágh, and R. Walser
Phys. Rev. A 78, 013605 (2008)

Calibration of a single atom detector for atomic micro chips
A. Stibor, S. Kraft, T. Campey, D. Komma, A. Günther, J. Fortágh, C.J. Vale, H. Rubinsztein-Dunlop, and C. Zimmermann
Phys. Rev. A 76, 033614 (2007)

Spatially resolved photo ionization of ultracold atoms on an atom chip
S. Kraft, A. Günther, J. Fortágh, and C. Zimmermann
Phys. Rev. A 75, 063605 (2007)

Atom interferometer based on phase coherent splitting of Bose-Einstein condensates with an integrated magnetic grating
A. Günther, S. Kraft, C. Zimmermann, and J. Fortágh
Phys. Rev. Lett. 98, 140403 (2007)

Magnetic micro traps for ultracold atoms
J. Fortágh and C. Zimmermann
Reviews of Modern Physics 79, 235 (2007)

Microtraps for quantum information processing and precision force sensing
G. Birkl and J. Fortágh
Laser & Photonics Reviews 1, 12-23 (2007) /DOI 10.1002/lpor.200610002

Atom counting in ultra-cold gases using photoionisation and atom counting
T. Campey, C. J. Vale, M. J. Davis, N. R. Heckenberg, and H. Rubinsztein-Dunlop
S. Kraft, C. Zimmermann, and J. Fortágh
Phys. Rev. A 74, 043612 (2006)

Highly versatile atomic micro traps generated by multifrequency magnetic field modulation
Ph. W. Courteille, B. Deh, J. Fortágh, A. Günther, S. Kraft, C. Marzok, S. Slama, C. Zimmermann
J. Phys. B: At. Mol. Opt. Phys. 39;1055 (2006)

Diffraction of a Bose-Einstein condensate from a magnetic lattice on a micro chip
A. Günther, S. Kraft, M. Kemmler, D. Koelle, R. Kleiner, C. Zimmermann, and J. Fortágh
Phys. Rev. Lett. 95, 170405 (2005)

Combined chips for atom-optics
A. Günther, M. Kemmler, S. Kraft, C. J. Vale, C. Zimmermann, and J. Fortágh
Phys. Rev. A 71, 063619 (2005)

Atom-optical elements on micro chips
S. Kraft, A, Günther, P. Wicke, B. Kasch, C. Zimmermann, and J. Fortágh
Eur. Phys. J. D 35, 119 (2005)

Towards atom chips
J. Fortágh and C. Zimmermann
Science 307, 860 (2005)

Rubidium Spectroscopy at 778-780 nm with a Distributed Feedback Laser Diode
S. Kraft, A. Deninger, C. Trück, J. Fortágh, F. Lison, and C. Zimmermann
Laser Phys. Lett. 2, 71 (2005)

Perspectives of ultracold atoms trapped in magnetic micro potentials
J. Fortágh, S. Kraft, A. Günther, C. Trück, P. Wicke, and C. Zimmermann
Opt. Comm. 243 45 (2004)

Two experiments with Bose-Einstein condensates in magnetic micro traps
C. Zimmermann, S. Kraft, A. Günther, H. Ott, and J. Fortágh
J. Phys. IV 116, 275 (2004)

Bose-Einstein-Kondensate in magnetischen Mikrofallen
J. Fortágh und C. Zimmermann
Physik Journal 2, Nr 6 (2003), 39-44

Bose-Einstein condensates in magnetic waveguides
J. Fortágh, H. Ott, S. Kraft, A. Günther, and C. Zimmermann
Appl. Phys. B 76,157 (2003)

On-chip laboratory for Bose-Einstein condensation
J. Fortágh, H. Ott, S. Kraft, A. Günther, C. Trück, and C. Zimmermann
International Conference on Laser Spectroscopy, Palm Cove (2003)

Dynamics of a Bose-Einstein condensate in an anharmonic trap
H. Ott, J. Fortágh, and C. Zimmermann
J. Phys. B: At. Mol. Opt. Phys. 36, 2817 (2003)

Nonlinear dynamics of a Bose-Einsteincondensate in a magnetic waveguide
H. Ott, J. Fortágh, S. Kraft, A. Günther, D. Komma, and C. Zimmermann
Phys. Rev. Lett. 91, 040402 (2003)

Bose-Einstein condensates in magnetic micro traps
C. Zimmermann, J. Fortágh, H. Ott, S. Kraft, and A. Günther
Atomic Physics 18, Proceedings of ICAP 2002, Boston

Anomalous longitudinal magnetic field near the surface of copper conductors
S. Kraft, A. Günther, H. Ott, D. Wharam, C. Zimmermann, and J. Fortágh
J. Phys. B: At. Mol. Opt. Phys. 35, L 469 (2002)

Microelectromagnets for trapping and manipulating ultracold atomic quantum gases
J. Fortágh, H. Ott, G. Schlotterbeck and C. Zimmermann, B. Herzog, and D. Wharam
Appl. Phys. Lett. 81, 1146 (2002)

Surface effects in magnetic microtraps
J. Fortágh, H. Ott, S. Kraft, A. Günther, and C. Zimmermann
Phys. Rev. A 66, 041604 (2002)

Bose-Einstein condensation in a surface microtrap
H. Ott, J. Fortágh, A. Grossmann, and C. Zimmermann
Phys. Rev. Lett. 87, 230401 (2001)

Bose-Einstein condensate in a surface microtrap
J. Fortágh, H. Ott, G. Schlotterbeck, A. Grossmann, and C. Zimmermann
Laser Spectroscopy Proceedings of the XV Int. Conference; Snowbird, Utah USA
June 10-15 2001, World Scientific 2002 (p. 293-296)
PhysRevLett.87.230401

A miniaturized magnetic guide for neutral atoms
J. Fortágh, H. Ott, A. Grossmann, and C. Zimmermann
App. Phys. B 70, 701 (2000).

Miniaturized wire trap for neutral atoms
J. Fortágh, H. Ott, A. Grossmann, and C. Zimmermann.
Laser Spectroscopy. Proceedings of the XIV International Conference Innsbruck, Austria
June 7-11 1999, World Scientific 1999 (p. 328-329)
Phys. Rev. Lett. 81, 5310

A miniaturized wire trap for neutral atoms
J. Fortágh, A. Grossmann, C. Zimmermann, and T. W. Hänsch
Phys. Rev. Lett. 81, 5310 (1998)

Fast loading of a magneto-optical trap from a pulsed thermal source
J. Fortágh, A. Grossmann, T. W. Hänsch, and C. Zimmermann
J. App. Phys. 84, 6499 (1998)