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Peer-reviewed publications

Partner(s) Author(s) Title Journal Volume Page Year URL D.O.I. Fellow 
UULM Joschka Wolf, Markus Deiß, Artjom Krükow, Eberhard Tiemann, Brandon P. Ruzic, Yujun Wang, José P. D’Incao, Paul S. Julienne, Johannes Hecker Denschlag State-to-state chemistry for three-body recombination in an ultracold rubidium gas Science 358 921 2017 10.1126/science.aan8721 No
AU L. Schmoger, O. O. Versolato, M. Schwarz, M. Kohnen, A. Windberger, B. Piest, S. Feuchtenbeiner, J. Pedregosa-Gutierrez, T. Leopold, P. Micke, A. K. Hansen, T. M. Baumann, M. Drewsen, J. Ullrich, P. O. Schmidt, J. R. C. Lopez-Urrutia Coulomb crystallization of highly charged ions Science 347 1233 2015 10.1126/science.aaa2960 No
AU A. K. Hansen, O. O. Versolato, Ł. Kłosowski, S. B. Kristensen, A. Gingell, M. Schwarz, A. Windberger, J. Ullrich, J. R. Crespo López-Urrutia, M. Drewsen Efficient rotational cooling of Coulomb-crystallized molecular ions by a helium buffer gas Nature 508 76 2014 10.1038/nature12996 No
UIBK D. Hauser, S. Lee, F. Carelli, St. Spieler, O. Lakhmanskaya, E. S. Endres, S. S. Kumar, F. Gianturco, R. Wester Rotational state-changing cold collisions of hydroxyl ions with helium Nature Physics 11 467 2015 10.1038/NPHYS3326 No
UNIBAS Matthias Germann, Xin Tong, Stefan Willitsch Observation of electric-dipole-forbidden infrared transitions in cold molecular ions Nature Physics 10 820 2014 10.1038/nphys3085 No
LKB J. Biesheuvel, J.-Ph. Karr, L. Hilico, K.S.E. Eikema, W. Ubachs, J.C.J. Koelemeij Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD+ Nature Communications 7 10385 2016 10.1038/ncomms10385 No
ALPES Ilia Sergachev, Richard Maulini, Tobias Gresch, Stéphane Blaser, Alfredo Bismuto, Antoine Müller, Yves Bidaux, Thomas Südmeyer, and Stéphane Schilt Frequency stability of a dual wavelength quantum cascade laser Optics Express 25 11027 2017 10.1364/OE.25.011027 Yes
UIBK, LAC Ibrokhim Iskandarov, Francesco Antonio Gianturco, Mario Hernandez Vera, Roland Wester, Humberto da Silva, Jr. and Olivier Dulieu Shape and Strength of dynamical coupling between vibrational levels of H2+ , HD+ and D2+ molecular ions in collision with He as a buffer gas. European Physical Journal D 71 141 2017 10.1140/epjd/e2017-80043-8 Yes
UNIBAS P. Eberle, A. D. Dörfler, C. von Planta, K. Ravi and S. Willitsch A dynamic ion-atom hybrid trap for high-resolution cold-collision studies ChemPhysChem 17 3769 2016 10.1002/cphc.201600643 Yes
LAC Humberto da Silva Jr, Maurice Raoult, Mireille Aymar, Olivier Dulieu Formation of molecular ions by radiative association of cold trapped atoms and ions New Journal of Physics 17 45015 2015 10.1088/1367-2630/17/4/045015 Yes
UOXF K. A. E. Meyer, L. L. Pollum, L. S. Petralia, A. Tauschinsky, C. J. Rennick, T. P. Softley, B. R. Heazlewood Ejection of Coulomb Crystals from a Linear Paul Ion Trap for Ion-Molecule Reaction Studies Journal of Physical Chemistry A 119 12449 2015 10.1021/acs.jpca.5b07919 Yes
ALPES Ilia Sergachev, Richard Maulini, Alfredo Bismuto, Stéphane Blaser, Tobias Gresch, Yves Bidaux, Antoine Müller, Stéphane Schilt, Thomas Südmeyer All-electrical frequency noise reduction and linewidth narrowing in quantum cascade lasers Optics Letters 39 6411 2014 10.1364/OL.39.006411 Yes
UOXF Jutta Toscano, Autreju Tauschinsky, Katrin Dulitz, Christopher J. Rennick, Brianna R. Heazlewood, Timothy P. Softley Zeeman deceleration beyond periodic phase space stability New Journal of Physics 19 83016 2017 10.1088/1367-2630/aa7ef5 No
LKB V.I. Korobov, L. Hilico, J.-Ph. Karr Fundamental Transitions and Ionization Energies of the Hydrogen Molecular Ions Physical Review Letters 118 233001 2017 10.1103/PhysRevLett.118.233001 No
LAC S. Jyothi, Tridib Ray, Sourav Dutta, A.R. Allouche, Romain Vexiau, Olivier Dulieu, S. A. Rangwala Photodissociation of trapped Rb2+ : Implications for hybrid molecular ion-atom trapping Physical Review Letters 117 213002 2016 10.1103/PhysRevLett.117.213002 No
UULM A. Krükow, A. Mohammadi, A. Härter, J. Hecker Denschlag, J. Pérez-Ríos, C. H. Greene Energy scaling of cold atom-atom-ion three-body recombination Physical Review Letters 116 193201 2016 10.1103/PhysRevLett.116.193201 No
UBO 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 Physical Review Letters 114 123001 2015 10.1103/PhysRevLett.114.123001 No
UBO M. Steiner, H. M. Meyer, J. Reichel, M. Köhl Photon Emission and Absorption of a Single Ion Coupled to an Optical-Fiber Cavity Physical Review Letters 113 263003 2014 10.1103/PhysRevLett.113.263003 No
AU Thomas Talvard, Philip G. Westergaard, Michael V. Depalatis, Nicolai F. Mortensen, Michael Drewsen, Bjarke Gøth, and Jan Hald  Enhancement of the performance of a fiber-based frequency comb by referencing to an acetylene-stabilized fiber laser Optics Express 25 2259 2017 10.1364/OE.25.002259 Yes
AU Aharon, N., Drewsen, M., and Retzker, A., Enhanced quantum sensing with multi level structures of trapped ions Quantum Sci. Technol 2 34006 2017 10.1088/2058-9565/aa771a No
LAC R. Saito, S. Haze, M. Sasakawa, R. Nakai, M. Raoult, H. Da Silva Jr., O. Dulieu, T. Mukaiyama Characterization of charge-exchange collisions between ultracold 6Li atoms and 40Ca+ ions Physical Review A 95 32709 2017 10.1103/PhysRevA.95.032709 Yes
LKB J.-Ph. Karr, L. Hilico, V.I. Korobov One-loop vacuum polarization at mα7 and higher orders for three-body molecular systems Physical Review A 95 42514 2017 10.1103/PhysRevA.95.042514 no
LKB J. Biesheuvel, J.-Ph. Karr, L. Hilico, K.S.E. Eikema, W. Ubachs, J.C.J. Koelemeij High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level Applied Physics B 123 23 2017 10.1007/s00340-016-6576-8 No
UDUS, UIBK Mario Hernadez Vera, Stephan Schiller, Roland Wester, Francesco Antonio Gianturco Rotationally inelastic cross sections, rates and cooling times for para-H2+, ortho-D2+ and HD+ in cold helium gas. European Physical Journal D 71 106 2017 10.1140/epjd/e2017-70740-7 No
UDUS, UIBK, LAC S. Schiller, I. Kortunov, M. Hernández Vera, F. Gianturco, and H. da Silva, Jr. Quantum state preparation of homonuclear molecular ions enabled via a cold buffer gas: An ab initio study for the H2+ and the D2+ case Physical Review A 95 43411 2017 10.1103/PhysRevA.95.043411 No
UIBK, LAC, UDUS Mario Hernández Vera, Franco Gianturco, Roland Wester, Humberto da Silva Jr., Olivier Dulieu, and Stephan Schiller Rotationally inelastic collisions of H2+ ions with He buffer gas : computing cross sections and rates Journal of Chemical Physics 146 124310 2017 10.1063/1.4978475 Yes
UNIBAS I. Rouse and S. Willitsch Superstatistical energy distributions of an ion in an ultracold buffer gas Physical Review Letters 118 143401 2017 10.1103/PhysRevLett.118.143401 No
UNIBAS A. Mokhberi, R. Schmied and S. Willitsch Optimised surface-electrode ion-trap junctions for experiments with cold molecular ions New Journal of Physics 19 43023 2017 10.1088/1367-2630/aa6918 No
UOXF Edward W. Steer, Lorenzo S. Petralia, Colin M. Western, Brianna R. Heazlewood, Timothy P. Softley Measurement of the orientation of buffer-gas-cooled, electrostatically-guided ammonia molecules Molecular Spectroscopy 332 94 2017 10.1016/j.jms.2016.11.003 Yes
ALPES Ilia Sergachev, Richard Maulini, Alfredo Bismuto, Stephane Blaser, Tobias Gresch, and Antoine Muller Gain-guided broad area quantum cascade lasers emitting 23.5 W peak power at room temperature Optics Express 24 19063 2016 10.1364/OE.24.019063 Yes
LAC M. Lepers, Y. Hong, J.-F. Wyart, O. Dulieu Proposal for laser-cooling of rare-earth ions Physical Review A 93 11401(R) 2016 10.1103/PhysRevA.93.011401 No
LKB J.-Ph. Karr, S.Patra, J.C.J. Koelemeij, J.M. Heinrich, N. Sillitoe, A. Douillet, L. Hilico Hydrogen molecular ions: new schemes for metrology and fundamental physics tests J. Phys.: Conf. Ser.
Frequency Standards and Metrology
723 12048 2016 10.1088/1742-6596/723/1/012048 Yes
LKB V.I. Korobov, J.C.J. Koelemeij, L. Hilico, J.-Ph. Karr Theoretical Hyperfine Structure of the Molecular Hydrogen Ion at the 1 ppm Level Physical Review Letters 116 53003 2016 10.1103/PhysRevLett.116.053003 No
UIBK I. Iskandarov, F. Carelli, Y. Yurtsever, R. Wester and F.A. Gianturco Exploring a dynamical path for C2H^-and NCO^-formation in dark molecular clouds European Physical Journal D 70 38 2016 10.1140/epjd/e2016-60639-2 Yes
UIBK F.A. Gianturco, T. Grassi, R. Wester Modelling the role of electron attachment rates on column density ratios for CnH−/CnH (n 1⁄4 4; 6; 8) in dense molecular clouds J. Phys.B:Atomic, Mol,Opt,Phys 49 204003 2016 10.1088/0953-4075/49/20/204003 No
UIBK L. Gonzalez- Sanchez, F.A. Gianturco, R. Wester State-changing processes for ions in cold traps: LiH- molecules colliding with He as a buffer gas. J. Phys.B:Atomic, Mol,Opt.,Phys 49 235201 2016 10.1088/0953-4075/49/23/235201 No
UNIBAS Daniel Rösch, Hong Gao, Ardita Kilaj and Stefan Willitsch Design and characterization of a linear quadrupole ion trap for high-resolution Coulomb-crystal time-of-flight mass spectrometry EPJ Techniques and Instrumentation 3 1 2016 10.1140/epjti/s40485-016-0032-3 No
UNIBAS M. Germann and S. Willitsch Fine- and hyperfine-structure effects in molecular photoionization: I. General theory and direct photoionization Journal of Chemical Physics 145 44314 2016 10.1063/1.4955301 No
UNIBAS M. Germann and S. Willitsch, Fine- and hyperfine-structure effects in molecular photoionization: II. Resonance-enhanced multiphoton ionization and hyperfine-selective generation of molecular cations Journal of Chemical Physics 145 44315 2016 10.1063/1.4955303 No
UNIBAS M. Germann and S. Willitsch Line strengths for fine- and hyperfine-resolved electric-quadrupole rotation-vibration transitions in Hund’s case b molecules Molecular Physics 114 769 2016 10.1080/00268976.2015.1118568 No
UNIBAS L. Ploenes, D. Haas, D. Zhang, S.  Y. T. van de Meerakker and S. Willitsch Cold and intense OH radical beam sources Review Scientific Instruments 87 53305 2016 10.1063/1.4948917 No
UULM A. Krükow, A. Mohammadi, A. Härter, and J. Hecker Denschlag Reactive two-body and three-body collisions of Ba+ in an ultracold Rb gas Physical Review A Rapid Communications 94 30701® 2016 10.1103/PhysRevA.94.030701 No
AU J. Martin Berglund, M. Drewsen, Christiane P. Koch Femtosecond wavepacket interferometry using the rotational dynamics of a trapped cold molecular ion New Journal of Physics 17 25007 2015 10.1088/1367-2630/17/2/025007 No
AU Michael Drewsen Ion Coulomb crystals Physica B: Condensed Matter 460 105 2015 10.1016/j.physb.2014.11.050 No
STEL S. Schmidt, T. Murböck, Z. Andelkovic, G. Birkl, W. Nörtershäuser, S. Stahl and Manuel Vogel  Non-destructive single-pass low-noise detection of ions in a beamline Review of Scientific Instruments 86 113302 2015 10.1063/1.4935551 No
UDUS M. Hansen, E. Magoulakis, Q.-F. Chen, I. Ernsting, and S. Schiller Quantum cascade laser-based mid-IR frequency metrology system with ultra-narrow linewidth and 1 × 10−13-level frequency instability Optics letters 40 2289 2015 10.1364/OL.40.002289 No
UIBK L. González-Sánchez , F. Carelli , F.A. Gianturco , R. Wester Collisional state-changing of OH_ rotations by interaction with Rb atoms in cold traps Chemical Physics 462 111 2015 10.1016/j.chemphys.2015.05.027 No
UIBK David López-Durán, Néstor Aguirre, Gerardo Delgado-Barrio, Pablo Villarreal, Franco Gianturco, María de Lara-Castells Potential energy surface and bound states of the ( X 4 Σ)KRb-K complex International Journal of Quantum Chemistry 115 19 2015 10.1002/qua.24759 No
UIBK L. González-Sánchez , F. Carelli , F.A. Gianturco , R. Wester Computing rotational energy transfers of OD^-/OH- in collisions with Rb: Isotopic effects and inelastic rates at cold ion-trap conditions New Journal of Physics 17 123003 2015 10.1088/1367-2630/17/12/123003 No
UNIBAS Pascal Eberle, Alexander D. Dörfler, Claudio von Planta, Krishnamurthy Ravi, Dominik Haas, Dong Zhang, Sebastiaan Y. T. van de Meerakker, Stefan Willitsch
 Ion-Atom and Ion-Molecule Hybrid Systems: Ion-Neutral Chemistry at Ultralow Energies  J. Phys. Conf. Ser.
635 12012 2015 10.1088/1742-6596/635/1/012012 Yes
UNIBAS A Mokhberi, S Willitsch Structural and energetic properties of molecular Coulomb crystals in a surface-electrode ion trap New Journal of Physics 17 45008 2015 10.1088/1367-2630/17/4/045008 No
UNIBAS I.Rouse, S.Willitsch Superstatistical velocity distributions of cold trapped ions in molecular dynamics simulations  Physical Review A 92 53420 2015 10.1103/PhysRevA.92.053420 No
UNIBAS, LAC Alexander Dörfler, Pascal Eberle, Humberto da Silva Jr. Maurice Raoult, Olivier Dulieu, Stefan Willitsch A dynamic ion-atom hybrid trap for high-resolution cold-collision studies J. Phys. Conf. Ser.
635 92408 2015 10.1088/1742-6596/635/9/092048 Yes
UOXF Brianna R. Heazlewood, Timothy P. Softley Low-Temperature Kinetics and Dynamics with Coulomb Crystals Annual Review of Physical Chemistry 66 475 2015 10.1146/annurev-physchem-040214-121527 No
UOXF E.W. Steer, K.S. Twyman, B.R. Heazlewood, T.P. Softley Accurate determination of the relative concentrations of ammonia isotopologues in a cold, electrostatically guided molecular beam Molecular Physics - 42156 2015 10.1080/00268976.2014.1002825 No
UOXF O. Schullian, J. Loreau, N. Vaeck, A. van der Avoird, B. R. Heazlewood, C. J. Rennick, T. P. Softley Simulating rotationally inelastic collisions using a Direct Simulation Monte Carlo method Molecular Physics 113 3972 2015 10.1080/00268976.2015.1098740 No
UOXF Katrin Dulitz, Atreju Tauschinsky, Timothy P Softley Zeeman deceleration of electron-impact-excited metastable helium atoms New Journal of Physics 17 35005 2015 10.1088/1367-2630/17/3/035005 No
UOXF Nabanita Deb, Laura L. Pollum, Alexander D. Smith, Matthias Keller, Christopher J. Rennick, Brianna R. Heazlewood, Timothy P. Softley Coulomb crystal mass spectrometry in a digital ion trap Physical Review A 91 33408 2015 10.1103/PhysRevA.91.033408 No
UOXF Katrin Dulitz, Nicolas Vanhaecke, Timothy P. Softley Model for the overall phase-space acceptance in a Zeeman decelerator Physical Review A 91 13409 2015 10.1103/PhysRevA.91.013409 No
UULM, LAC Markus Deiß, Björn Drews, and Johannes Hecker Denschlag, Nadia Bouloufa-Maafa, Romain Vexiau, Olivier Dulieu, Polarizability of ultracold Rb2 molecules in the rovibrational ground state of a3Sigma+u New Journal of Physics 17 65019 2015 10.1088/1367-2630/17/6/065019 No
LKB J.-Ph. Karr Candidates for a molecular clock Journal of Molecular Spectroscopy 300 37 2014 10.1016/j.jms.2014.03.016 No
LKB Eugenio Fasci, Nicola Coluccelli, Marco Cassinerio, Alessio Gambetta, Laurent Hilico, Livio Gianfrani, Paolo Laporta, Antonio Castrillo, Gianluca Galzerano Narrow-linewidth quantum cascade laser at 86  μm Optics Letters 39 4946 2014 10.1364/OL.39.004946 No
STEL M. Heck, P. Ascher, R.B. Cakirli, H. Golzke, D. Rodríguez, S. Stahl, M. Ubieto-Díaz, K. Blaum An online FT-ICR Penning-trap mass spectrometer for the DPS2-F section of the KATRIN experiment Nucl Instrum Methods Phys Res A 757 54 2014 10.1016/j.nima.2014.03.057 No
STEL M. Vogel, H. Häffner, K. Hermanspahn, S. Stahl, J. Steinmann, W. Quint Resistive and sympathetic cooling of highly-charged-ion clouds in a Penning trap Physical Review A  90 43412 2014 10.1103/PhysRevA.90.043412 No
UDUS S. Schiller, D. Bakalov, V. I. Korobov Simplest Molecules as Candidates for Precise Optical Clocks Physical Review Letters 113 23004 2014 10.1103/PhysRevLett.113.023004 No
UNIBAS Daniel Rösch, Stefan Willitsch, Yuan-Pin Chang, Jochen Küpper Chemical reactions of conformationally selected 3-aminophenol molecules in a beam with Coulomb-crystallized Ca+ ions Journal of Chemical Physics 140 124202 2014 10.1063/1.4869100 No
UNIBAS A. Mokhberi, S. Willitsch Sympathetic cooling of molecular ions in a surface-electrode ion trap Physical Review A  90 23402 2014 10.1103/PhysRevA.90.023402 No
UOXF Katrin Dulitz, Michael Motsch, Nicolas Vanhaecke, Timothy P. Softley Getting a grip on the transverse motion in a Zeeman decelerator Journal of Chemical Physics 140 104201 2014 10.1063/1.4866906 No
UOXF Nabanita Deb, Brianna R. Heazlewood, Christopher J. Rennick, Timothy P. Softley Laser induced rovibrational cooling of the linear polyatomic ion $\text{C}_2\text{H}_2^+$C2H2+ Journal of Chemical Physics 140 164314 2014 10.1063/1.4870644 No
UOXF Kathryn S. Twyman, Martin T. Bell, Brianna R. Heazlewood, Timothy P. Softley Production of cold beams of ND3 with variable rotational state distributions by electrostatic extraction of He and Ne buffer-gas-cooled beams Journal of Chemical Physics 141 24308 2014 10.1063/1.4885855 No
UULM A. Härter, J. Hecker Denschlag Cold atom–ion experiments in hybrid traps Contemporary Physics 55 33 2014 10.1080/00107514.2013.854618 No
Published before the project period but of relevance to certain Milestones and Deliverables
LKB Vu Quang Tran, Jean-Philippe Karr, Albane Douillet, Jeroen C. J. Koelemeij, Laurent Hilico Two-photon spectroscopy of trapped HD + ions in the Lamb-Dicke regime Physical Review A  88 33421 2013 10.1103/PhysRevA.88.033421 No
UBO 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 Physical Review Letters 110 160402 2013 10.1103/PhysRevLett.110.160402 No
UIBK M. Satta, M. Marquéz-Mijares, E. Yurtsever, S. Bovino, F.A. Gianturco Mg+(2S) and Mg+(2P) in reaction with H2(): A description of the energy surfaces explaining the mechanisms International Journal of Mass Spectrometry 351 47 2013 10.1016/j.ijms.2013.03.019 No
UNIBAS Y.-P. Chang, K. Dlugolecki, J. Kupper, D. Rosch, D. Wild, S. Willitsch Specific Chemical Reactivities of Spatially Separated 3-Aminophenol Conformers with Cold Ca+ Ions Science 342 98 2013 10.1126/science.1242271 No
UULM A. Härter, A. Krükow, M. Deiß, B. Drews, E. Tiemann, J. Hecker Denschlag Population distribution of product states following three-body recombination in an ultracold atomic gas Nature Physics 9 512 2013 10.1038/nphys2661 No
UULM A. Härter, A. Krükow, A. Brunner, J. Hecker Denschlag Minimization of ion micromotion using ultracold atomic probes Applied Physics Letters 102 221115 2013 10.1063/1.4809578 No
UULM Arne Härter, Artjom Krükow, Andreas Brunner, Wolfgang Schnitzler, Stefan Schmid, Johannes Hecker Denschlag Single Ion as a Three-Body Reaction Center in an Ultracold Atomic Gas Physical Review Letters 109 123201 2012 10.1103/PhysRevLett.109.123201 No

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