One Two

Prof. Dr. Michael Köhl

Raum 5.020
Wegelerstrasse 8
53115 Bonn 
Tel.: +49-228-73 4899
Fax: +49-228-73 4038

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P. Kobel, M. Breyer, and M. Köhl: 
Deterministic spin-photon entanglement from a trapped ion in a fiber Fabry–Perot cavity 
npj Quantum Information 7, 6 (2021).

M. Gall, N. Wurz, J. Samland, C.F. Chan, and M. Köhl: 
Competing magnetic orders in a bilayer Hubbard model with ultracold atoms 
Nature 589, 40-43 (2021).

C.F. Chan, M. Gall, N. Wurz, and M. Köhl: 
Pair correlations in the attractive Hubbard model 
Phys. Rev. Research 2, 023210 (2020).

M. Gall, C.F. Chan, N. Wurz, and M. Köhl: 
Simulating a Mott Insulator Using Attractive Interaction 
Phys. Rev. Lett. 124, 010403 (2020).

J. Kombe, J.-S Bernier, M. Köhl, and C. Kollath : 
Finite-duration interaction quench in dilute attractively interacting Fermi gases: Emergence of preformed pairs 
Phys. Rev. A 100, 013604 (2019).

F. Rönchen, T. F. Langerfeld, and M. Köhl: 
Correlated photon-pair generation in a liquid-filled microcavity 
New J. Phys. 21, 123037 (2019).

J. Schmitz, H. M. Meyer, and M. Köhl: 
Ultraviolet Fabry-Perot cavity with stable finesse under ultrahigh vacuum conditions 
Review of Scientific Instruments 90, 063102 (2019).

A. Behrle, T. Harrison, J. Kombe, K. Gao, M. Link, J.-S. Bernier, C. Kollath, and M. Köhl: 
Higgs mode in a strongly interacting fermionic superfluid 
Nature Physics 14, 781-785 (2018).

T. F. Langerfeld, H. M. Meyer, and M. Köhl: 
Correlated-photon-pair emission from a cw-pumped Fabry-Perot microcavity 
Phys. Rev. A 97, 023822 (2018).

N. Wurz, C. F. Chan, M. Gall, J. H. Drewes, E. Cocchi, L. A. Miller, D. Pertot, F. Brennecke, and M. Köhl: 
Coherent manipulation of spin correlations in the Hubbard model 
Phys. Rev. A 97, 051602(R) (2018).

E. Cocchi, L. A. Miller, J. H. Drewes, C. F. Chan, D. Pertot, F. Brennecke, and M. Köhl: 
Measuring Entropy and Short-Range Correlations in the Two-Dimensional Hubbard Model 
Phys. Rev. X, 7, 031025 (2017).

J.H. Drewes, L.A. Miller, E. Cocchi, C. Chan, D. Pertot, F. Brennecke, M. Köhl;
Antiferromagnetic correlations in two- dimensional fermionic Mott-insulating and metallic phases 
Phys. Rev. Lett. 118, 170401 (2017).

T. Ballance, H.M. Meyer, P. Kobel, K. Ott, J. Reichel, and M. Köhl
Cavity-induced back-action in Purcell-enhanced photoemission of a single ion in an ultraviolet fiber-cavity
Phys. Rev. A 95, 033812 (2017). 

H. M. Meyer, M. Breyer, M. Köhl 
Monolayer graphene as dissipative membrane in an optical resonator 
Applied Physics B 122, 290 (2016).

J.H. Drewes, E. Cocchi, L.A. Miller, C. Chan, D. Pertot, F. Brennecke, M. Köhl
Thermodynamics vs. local density fluctuations in the metal/Mott-insulator crossover 
Phys. Rev. Lett. 117, 135301 (2016).

E. Cocchi, L.A. Miller, J. H. Drewes, M. Koschorreck, D. Pertot, F. Brennecke, M. Köhl:
Equation of state of the two-dimensional Hubbard model
Phys. Rev. Lett. 116, 175301 (2016).

H. M. Meyer, R. Stockill, M. Steiner, C. Le Gall, C. Matthiesen, E. Clarke, A. Ludwig, J. Reichel, M. Atatüre, and M. Köhl:
Direct photonic coupling of a semiconductor quantum dot and a trapped ion
Phys. Rev. Lett. 114, 123001 (2015).

D. Pertot, A. Sheikhan, E. Cocchi, L. A. Miller, J. E. Bohn, M. Koschorreck, M. Köhl, and C. Kollath:
Relaxation Dynamics of a Fermi Gas in an Optical Superlattice
Phys. Rev. Lett. 113, 170403 (2014).

M. Koschorreck, D. Pertot, E. Vogt, M. Köhl: 
Universal spin dynamics in two-dimensional Fermi gases 
Nature Physics 9, 405–409 (2013).

L. Ratschbacher, C. Sias, L. Carcagni, J. M. Silver, C. Zipkes, M. Köhl: 
Decoherence of a Single-Ion Qubit Immersed in a Spin-Polarized Atomic Bath

Phys. Rev. Lett. 110, 160402 (2013).

S. K. Baur, E. Vogt, M. Köhl, G. Bruun: 
Collective modes of a two-dimensional spin-1/2 Fermi gas in a harmonic trap 
Phys. Rev. A 87, 043612 (2013).

M. Steiner, H. M. Meyer, C. Deutsch, J. Reichel, M. Köhl: 
A single ion coupled to an optical fiber cavity
Phys. Rev. Lett. 110, 043003 (2013); see also: Physics Focus: "Optical Fibers Illuminate Single Ion"

B. Fröhlich, M. Feld, E. Vogt, M. Koschorreck, M. Köhl, C. Berthod, T. Giamarchi: 
Two-dimensional Fermi liquid with attractive interactions
Phys. Rev. Lett. 109, 130403 (2012).

L. Ratschbacher, C. Zipkes, C. Sias, M. Köhl: 
Controlling chemical reactions of a single particle
Nature Physics 8, 649 (2012).

S. K. Baur, B. Fröhlich, M. Feld, E. Vogt, D. Pertot, M. Koschorreck, M. Köhl: 
Radio frequency spectra of Feshbach molecules in quasi-two dimensional geometries
Phys. Rev. A 85, 061604 (2012).

M. Koschorreck, D. Pertot, E. Vogt, M. Feld, B. Fröhlich, M. Köhl: 
Attractive and repulsive Fermi polarons in two dimensions
Nature 485, 691 (2012).

E. Vogt, M. Feld, B. Fröhlich, D. Pertot, M. Koschorreck, M. Köhl: 
Scale invariance and viscosity of a two-dimensional Fermi gas 
Phys. Rev. Lett. 108, 070404 (2012).

H. M. Meyer, M. Steiner, L. Ratschbacher, C. Zipkes, M. Köhl: 
Laser spectroscopy and cooling of Yb+ ions on a deep-UV transition 
Phys. Rev. A 85, 012502 (2012).

M. Feld, B. Fröhlich, E. Vogt, M. Koschorreck, M. Köhl: 
Observation of a pairing pseudogap in a two-dimensional Fermi gas
Nature 480, 75 (2011).

A. Behrle, M. Koschorreck, M.Köhl: 
Isotope shift and hyperfine splitting of the 4s - 5p transition of potassium
Phys. Rev. A 83, 052507 (2011). 

C. Zipkes, L. Ratschbacher, C. Sias, M.Köhl: 
Kinetics of a single trapped ion in an ultracold buffer gas
New J. Phys. 13, 053020 (2011). 

B. Fröhlich, M. Feld, E. Vogt, M. Koschorreck, W. Zwerger, M.Köhl:
Radio-frequency spectroscopy of a strongly interacting two-dimensional Fermi gas
Phys. Rev. Lett. 106, 105301 (2011).

C. Zipkes, S. Palzer, L. Ratschbacher, C. Sias, M.Köhl:
Cold heteronuclear atom-ion collisions 
Phys. Rev. Lett. 105, 133201 (2010). 

C. Zipkes, S. Palzer, C. Sias, M.Köhl:
A trapped single ion inside a Bose-Einstein condensate
Nature 464, 388 (2010).

S. Palzer, C. Zipkes, C. Sias, M.Köhl:
Quantum transport through a Tonks-Girardeau gas
Phys. Rev. Lett. 103, 150601 (2009). 

J.-S. Bernier, C. Kollath, A. Georges, L. De Leo, F. Gerbier, C. Salomon, M.Köhl:
Cooling fermionic atoms in optical lattices by shaping the confinement
Phys. Rev. A 79, 061601 (R) (2009).

F. Brennecke, T. Donner, S. Ritter, T. Bourdel, M. Köhl, T. Esslinger:
Cavity QED with a Bose-Einstein condensate
Nature 450, 268 (2007). (see also: arXiv:0706.3411).

N. Strohmaier, Y. Takasu, K. Günter, R. Jördens, M. Köhl, H. Moritz, T. Esslinger:
Interaction-controlled transport of an ultracold Fermi gas 
Phys. Rev. Lett. 99, 220601 (2007).

C. Kollath, M. Köhl, T. Giamarchi:
Scanning tunneling microscopy with ultracold atoms
Phys. Rev. A 76, 063602 (2007).

T. Donner, S. Ritter, T. Bourdel, A. Öttl, M. Köhl, T. Esslinger:
Critical behaviour of a trapped interacting Bose gas
Science 315, 1556 (2007).

S. Ritter, A. Öttl, T. Donner, T. Bourdel, M. Köhl, T. Esslinger:
Observing the Formation of Long-range Order during Bose-Einstein Condensation
Phys. Rev. Lett. 98, 090402 (2007).

K. Günter, T. Stöferle, H. Moritz, M. Köhl, T. Esslinger:
Bose-Fermi mixtures in a three-dimensional optical lattice 
Phys. Rev. Lett. 96, 180402 (2006).

M. Köhl:
Thermometry of Fermionic Atoms in an Optical Lattice 
Phys. Rev. A 73, 031601(R) (2006).

T. Stöferle, H. Moritz, K. Günter, M. Köhl, T. Esslinger:
Molecules of Fermionic Atoms in Optical Lattices 
Phys. Rev. Lett. 96, 030401 (2006).

K. Günter, T. Stöferle, H. Moritz, M. Köhl, T. Esslinger:
p-Wave Interactions in Low-Dimensional Fermi gases 
Phys. Rev. Lett. 95, 230401 (2005).

A. Öttl, S. Ritter, M. Köhl, T. Esslinger:
Correlations and Counting Statistics of an Atom Laser
Phys. Rev. Lett. 95, 090404 (2005).

H. Moritz, T. Stöferle, K. Günter, M. Köhl, T. Esslinger:
Confinement Induced Molecules in a 1D Fermi Gas
Phys. Rev. Lett. 94, 210401 (2005).

M. Köhl, H. Moritz, T. Stöferle, K. Günter, T. Esslinger:
Fermionic Atoms in a Three-Dimensional Optical Lattice: Observing Fermi Surfaces, Dynamics and Interactions
Phys. Rev. Lett. 94, 080403 (2005).

C. Schori, T. Stöferle, H. Moritz, M. Köhl, T. Esslinger:
Excitations of a Superfluid in a 3D Optical Lattice
Phys. Rev. Lett. 93, 240402 (2004).

T. Stöferle, H. Moritz, C. Schori, M. Köhl, T. Esslinger:
Transition from a strongly interacting 1D superfluid to a Mott insulator
Phys. Rev. Lett. 92, 130403 (2004).

H. Moritz, T. Stöferle, M. Köhl, T. Esslinger:
Exciting collective oscillations in a trapped 1D gas
Phys. Rev. Lett. 91, 250402 (2003).

M. Köhl, M. J. Davis, C. W. Gardiner, T. W. Hänsch, T. Esslinger:
Growth of Bose-Einstein Condensates from Thermal Vapor
Phys. Rev. Lett. 88, 080402 (2002).

M. Köhl, T. W. Hänsch, T. Esslinger:
Measuring the temporal coherence of an atom laser beam
Phys. Rev. Lett. 87, 160404 (2001).

I. Bloch, M. Köhl, M. Greiner, T. W. Hänsch, T. Esslinger:
Optics with an Atom Laser Beam
Phys. Rev. Lett. 87, 030401 (2001).

R. Onofrio, D. S. Durfee, C. Raman, M. Köhl, C. E. Kuklewicz, W. Ketterle:
Surface Excitations of a Bose-Einstein-Condensate
Phys. Rev. Lett. 84, 810 (2000).

C. Raman, M. Köhl, R. Onofrio, D. S. Durfee, C. E. Kuklewicz, Z. Hadzibabic, W. Ketterle:
Evidence for a Critical Velocity in a Bose-Einstein Condensed Gas
Phys. Rev. Lett. 83, 2502 (1999).

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