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A high resolution ion microscope for cold atoms
Markus Stecker, Hannah Schefzyk, József Fortágh, Andreas Günther
arXiv: 1701.02915

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)


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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




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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)





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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)


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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)


News and Views
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 


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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)


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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) 


IOP Select

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)


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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

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)


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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)


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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


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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)


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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)


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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)


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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)


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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)


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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)


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


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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)


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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)