The University of Southampton

Professor Hendrik Ulbricht 

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Hendrik is Deputy Head of Department, Director of Research at the Department of Physics and Astronomy, University of Southampton and since October 2018 Head of the Quantum, Light & Matter (QLM) research devision at the same department.

Hendrik is Professor of Physics. He obtained his undergraduate degree in physics (Dipl.-Phys.) from the Technical University at Berlin (Germany) and the Albert Einstein Institute (Max Planck Institute for Gravitational Physics, Golm) in 2000 with a theoretical work on Black Hole Thermodynamics. He graduated with a PhD (Dr. rer. nat.) from the Free University of Berlin and the Fritz Haber Institute of the Max Planck Society (Germany) in 2003 with a work on experimental surface science in the group of Nobel Laureate Gerhard Ertl (NP in Chemistry 2007). After a postdoc position at Vanderbilt University in Nashville, US on a Max Kade fellowship and as senior postdoc and Assistant Professor at the University of Vienna (Austria), he joined the Department of Physics & Astronomy in 2008 as a Reader and was promoted a personal chair in 2014. He leads the Quantum Nanophysics and Matterwave Interferometry research group. Ulbricht is the proud holder of the certification of apprenticeship as a bricklayer. 


Research interests

Hendrik's main research interests concern experimental tests of fundamental theories of Nature by table-top experiments but also in space. Some tests are concerned with the large mass limit of the quantum superposition principle, which forms the basis of quantum mechanics. Other experiments are concerned with testing the interplay between quantum mechanics and gravitation in the low energy limit.

The Ulbricht group performs quantum experimental research on the preparation and analysis of massive systems in non-classical states by various techniques. They pioneer so-called levitated opto- and magneto-mechanics experiments, where light and magnetic fields are used to both trap and control nano- and micro-particles in vacuum. Please see the Ulbricht group webpages for more details.


Juffmann, Thomas, Truppe, Stefan, Geyer, Philipp, Major, András G., Deachapunya, Sarayut, Ulbricht, Hendrik and Arndt, Markus (2009) Wave and particle in molecular interference lithography. Physical Review Letters, 103 (26), p.263601. (doi:10.1103/PhysRevLett.103.263601).

Marksteiner, Markus, Divochiy, Alexander, Sclafani, Michele, Haslinger, Philipp, Ulbricht, Hendrik, Korneev, Alexander, Semenov, Alexander, Gol’tsman, Gregory and Arndt, Markus (2009) A superconducting NbN detector for neutral nanoparticles. Nanotechnology, 20 (45), 455501. (doi:10.1088/0957-4484/20/45/455501).

Marksteiner, Markus, Haslinger, Philipp, Sclafani, Michele, Ulbricht, Hendrik and Arndt, Markus (2009) UV and VUV ionization of organic molecules, clusters, and complexes. Journal of Physical Chemistry A, 113 (37), 9952-9957. (doi:10.1021/jp905039f).

Ulbricht, Hendrik (2009) Interaction kinetics of atoms and molecules on carbon nanotube surfaces. [in special issue: Special Issue of Surface Science dedicated to Prof. Dr. Dr. h.c. mult. Gerhard Ertl, Nobel-Laureate in Chemistry 2007] Surface Science, 603 (10-12), 1853-1862. (doi:10.1016/j.susc.2008.09.062).

Hornberger, Klaus, Gerlich, Stefan, Ulbricht, Hendrik, Hackermüller, Lucia, Nimmrichter, Stefan, Goldt, Ilya V., Boltalina, Olga and Arndt, Markus (2009) Theory and experimental verification of Kapitza–Dirac–Talbot–Lau interferometry. New Journal of Physics, 11 (4), 43032. (doi:10.1088/1367-2630/11/4/043032).

Nimmrichter, Stefan, Hornberger, Klaus, Ulbricht, Hendrik and Arndt, Markus (2008) Absolute absorption spectroscopy based on molecule interferometry. Physical Review A, 78 (6), 63607. (doi:10.1103/PhysRevA.78.063607).

Gerlich, Stefan, Gring, Michael, Ulbricht, Hendrik, Hornberger, Klaus, Tüxen, Jens, Mayor, Marcel and Arndt, Markus (2008) Matter-wave metrology as a complementary tool for mass spectrometry. Angewandte Chemie International Edition, 47 (33), 6195-6198. (doi:10.1002/anie.200801942).

Marksteiner, Markus, Haslinger, Philipp, Ulbricht, Hendrik, Sclafani, Michele, Oberhofer, Harald, Dellago, Christoph and Arndt, Markus (2008) Gas-phase formation of large neutral alkaline-earth metal tryptophan complexes. Journal of the American Society for Mass Spectrometry, 19 (7), 1021-1026. (doi:10.1016/j.jasms.2008.04.028).

Arndt, M., Berninger, M., Deachapunya, S., Gerlich, S., Hackermüller, L., Major, A. G., Marksteiner, M., Stéfanov, A. and Ulbricht, H. (2008) On the prospects of interferometry and deflectometry for characterizing large molecules. European Physical Journal - Special Topics, 159 (1), 1-9. (doi:10.1140/epjst/e2008-00687-9).

Ulbricht, Hendrik, Berninger, Martin, Deachapunya, Sarayut, Stefanov, André and Arndt, Markus (2008) Gas phase sorting of fullerenes, polypeptides and carbon nanotubes. Nanotechnology, 19 (4), 45502-45507. (doi:10.1088/0957-4484/19/04/045502).

Deachapunya, S., Fagan, P.J., Major, A.G., Reiger, E., Ritsch, H., Stefanov, A., Ulbricht, H. and Arndt, M. (2008) Slow beams of massive molecules. The European Physical Journal D, 46 (2), 307-313. (doi:10.1140/epjd/e2007-00301-8).

Hackermüller, L., Hornberger, K., Gerlich, S., Gring, M., Ulbricht, H. and Arndt, M. (2007) Optical polarizabilities of large molecules measured in near-field interferometry. Applied Physics B, 89 (4), 469-473. (doi:10.1007/s00340-007-2873-6).

Gerlich, Stefan, Hackermüller, Lucia, Hornberger, Klaus, Stibor, Alexander, Ulbricht, Hendrik, Gring, Michael, Goldfarb, Fabienne, Savas, Tim, Müri, Marcel, Mayor, Marcel and Arndt, Markus (2007) A Kapitza–Dirac–Talbot–Lau interferometer for highly polarizable molecules. Nature Physics, 3 (10), 711-715. (doi:10.1038/nphys701).

Gring, Michael, Gerlich, Stefan, Eibenberger, Sandra, Nimmrichter, Stefan, Berrada, Tarik, Arndt, Markus, Ulbricht, Hendrik, Hornberger, Klaus, Müri, Marcel, Mayor, Marcel, Böckmann, Marcus and Doltsinis, Nikos L. (2010) Influence of conformational molecular dynamics on matter wave interferometry. Physical Review A, 81 (3), 4-[pp]. (doi:10.1103/PhysRevA.81.031604).

Szewc, Carola, Collier, James D and Ulbricht, Hendrik (2010) Note: a helical velocity selector for continuous molecular beams. Review of Scientific Instruments, 81 (10), 106107-[3pp]. (doi:10.1063/1.3499254). (PMID:21034135)

Xuereb, André, Ulbricht, Hendrik and Paternostro, Mauro (2014) Macroscopicity in an optomechanical matter-wave interferometer. Optics Communications, 1-4. (doi:10.1016/j.optcom.2014.06.006).

Bahrami, M., Paternostro, M., Bassi, A. and Ulbricht, H. (2014) Proposal for a noninterferometric test of collapse models in optomechanical systems. Physical Review Letters, 112 (21), 1-5, [210404]. (doi:10.1103/PhysRevLett.112.210404).

Bassi, Angelo and Ulbricht, Hendrik (2014) Collapse models: from theoretical foundations to experimental verifications. [in special issue: EmQM13: Emergent Quantum Mechanics 2013 3�6 October 2013, Vienna, Austria] Journal of Physics: Conference Series, 504 (12023). (doi:10.1088/1742-6596/504/1/012023).

Bahrami, M., Bassi, A. and Ulbricht, H. (2014) Testing the quantum superposition principle in the frequency domain. Physical Review A, 89 (32127), 1-10. (doi:10.1103/PhysRevA.89.032127).

Xuereb, André, Ulbricht, Hendrik and Paternostro, Mauro (2013) Optomechanical interface for probing matter-wave coherence. Scientific Reports, 3 (3378), 1-5. (doi:10.1038/srep03378).

Juffmann, Thomas, Ulbricht, Hendrik and Arndt, Markus (2013) Experimental methods of molecular matter-wave optics. Reports on Progress in Physics, 76 (86402), 1-28. (doi:10.1088/0034-4885/76/8/086402).

Bassi, Angelo, Lochan, Kinjalk, Satin, Seema, Singh, Tejinder and Ulbricht, Hendrik (2013) Models of wave-function collapse, underlying theories, and experimental tests. Reviews of Modern Physics, 85 (2), 471-527. (doi:10.1103/RevModPhys.85.471).

Utz, Marcel, Levitt, Malcolm H., Cooper, Nathan and Ulbricht, Hendrik (2015) Visualisation of quantum evolution in the Stern–Gerlach and Rabi experiments. Physical Chemistry Chemical Physics, 17, 3867-3872. (doi:10.1039/C4CP05606J).

Bateman, James, Nimmrichter, Stefan, Hornberger, Klaus and Ulbricht, Hendrik (2014) Near-field interferometry of a free-falling nanoparticle from a point-like source. Nature Communications, 5 (4788), 1-5. (doi:10.1038/ncomms5788).

McMillen, S., Brunelli, M., Carlesso, M., Bassi, A., Ulbricht, H., Paris, M.G.A . and Paternostro, M. (2017) Quantum-limited estimation of continuous spontaneous localization. Physical Review A, 95, [012132]. (doi:10.1103/PhysRevA.95.012132).

Grossardt, Andre, Bateman, James, Ulbricht, Hendrik and Bassi, Angelo (2016) Effects of Newtonian gravitational self-interaction in harmonically trapped quantum systems. Scientific Reports, 6 (30840), 1-16. (doi:10.1038/srep30840).

Rashid, Muddassar, Tufarelli, Tommaso, Bateman, James, Vovrosh, Jamie, Hempston, David, Kim, M.S and Ulbricht, Hendrik (2016) Experimental realization of a thermal squeezed state of levitated optomechanics. Physical Review Letters, 117 (27), 1-6. (doi:10.1103/PhysRevLett.117.273601).

Bateman, James, Mchardy, Ian, Merle, Alexander, Morris, Tim R. and Ulbricht, Hendrik (2015) On the existence of low-mass dark matter and its direct detection. Scientific Reports, 5, [8058]. (doi:10.1038/srep08058).

Bassi, Angelo, Grossardt, Andre and Ulbricht, Hendrik (2017) Gravitational decoherence. Classical and Quantum Gravity, 34 (193002).

Bose, Sougato, Mazumdar, Anupam, Morley, Gavin W., Ulbricht, Hendrik, Toros, Marko, Paternostro, Mauro, Gerarci, Andrew, Barker, Peter, Kim, M.S. and Milburn, Gerard (2017) A spin entanglement witness for quantum gravity. Physical Review Letters, 119 (240401). (doi:10.1103/PhysRevLett.119.240401).

Hempston, David, Vovrosh, Jamie, Toros, Marko, Winstone, George, Rashid, Muddassar and Ulbricht, Hendrik (2017) Force sensing with an optically levitated charged nanoparticle. Applied Physics Letters, 111 (13). (doi:10.1063/1.4993555).

Rashid, Muddassar, Toros, Marko and Ulbricht, Hendrik (2017) Wigner function reconstruction in levitated optomechanics. Quantum Measurement and Quantum Metrology, 4, 17-25. (doi:10.1515/qmetro-2017-0003).

Ulbricht, Hendrik (2007) Thermal and electrical properties of porphyrin derivatives and their relevance for molecule interferometry. The Journal of Chemical Physics, 1-8. (doi:10.1063/1.2721563).

Ulbricht, Hendrik (2014) A proposal for the experimental detection of CSL induced random walk. Scientific Reports, 1-13. (In Press)

Ulbricht, Hendrik (2015) Is quantum linear superposition an exact principle of nature? In, Questioning the Foundations of Physics. pp. 151-164.

Bedingham, D.J. and Ulbricht, H. (2015) Correlated random walks caused by dynamical wavefunction collapse. Scientific Reports, 5, [13380]. (doi:10.1038/srep13380).

Kaltenbaek, Rainer, Aspelmeyer, Markus, Barker, Peter F, Bassi, Angelo, Bateman, James, Bongs, Kai, Bose, Sougato, Braxmaier, Claus, Brukner, Časlav, Christophe, Bruno, Chwalla, Michael, Cohadon, Pierre-françois, Cruise, Adrian Michael, Curceanu, Catalina, Dholakia, Kishan, Diósi, Lajos, Döringshoff, Klaus, Ertmer, Wolfgang, Gieseler, Jan, Gürlebeck, Norman, Hechenblaikner, Gerald, Heidmann, Antoine, Herrmann, Sven, Hossenfelder, Sabine, Johann, Ulrich, Kiesel, Nikolai, Kim, Myungshik, Lämmerzahl, Claus, Lambrecht, Astrid, Mazilu, Michael, Milburn, Gerard J, Müller, Holger, Novotny, Lukas, Paternostro, Mauro, Peters, Achim, Pikovski, Igor, Pilan zanoni, André, Rasel, Ernst M, Reynaud, Serge, Riedel, Charles Jess, Rodrigues, Manuel, Rondin, Loïc, Roura, Albert, Schleich, Wolfgang P, Schmiedmayer, Jörg, Schuldt, Thilo, Schwab, Keith C, Tajmar, Martin, Tino, Guglielmo M, Ulbricht, Hendrik, Ursin, Rupert and Vedral, Vlatko (2016) Macroscopic Quantum Resonators (MAQRO): 2015 update. EPJ Quantum Technology, 3 (1), 1-47. (doi:10.1140/epjqt/s40507-016-0043-7).

Ulbricht, Hendrik (2016) Free nano-object Ramsey interferometry for large quantum superpositions. Physical Review Letters, 1-8. (doi:10.1103/PhysRevLett.117.143003).

Vovrosh, Jamie, Rashid, Muddassar, Hempston, David, Bateman, James, Paternostro, Mauro and Ulbricht, Hendrik (2017) Parametric feedback cooling of levitated optomechanics in a parabolic mirror trap. Journal of the Optical Society of America B, 34 (7), 1421-1428. (doi:10.1364/JOSAB.34.001421).

Lee, S.K., Kim, M.S., Szewc, C. and Ulbricht, Hendrik (2012) Phase-space tomography of matter-wave diffraction in the Talbot regime. New Journal of Physics, 14. (doi:10.1088/1367-2630/14/4/045001).

Zhu, Zipeng, Crochet, Jared, Arnold, Michael S., Hersam, Mark C., Ulbricht, Hendrik, Resasco, Daniel and Hertel, Tobias (2006) Pump-probe spectroscopy of exciton dynamics in (6,5) carbon nanotubes. The Journal of Physical Chemistry C, 111 (10), 3831–3835. (doi:10.1021/jp0669411). (In Press)

Gotsche, N., Ulbricht, Hendrik and Arndt, M. (2007) UV-VIS absorption spectroscopy of large molecules for applications in matter wave interferometry. Laser Physics, 17 (4), 583-589. (doi:10.1134/S1054660X07040433).

Venn, Paul and Ulbricht, Hendrik (2011) Coherent control of the motion of complex molecules and the coupling to internal state dynamics. Faraday Discussions, 153, 237-246. (doi:10.1039/C1FD00066G).

Arndt, Markus, Ekers, Aigars, von Klitzing, Wolf and Ulbricht, Hendrik (2012) Focus on modern frontiers of matter wave optics and interferometry. New Journal of Physics, 14, [125006]. (doi:10.1088/1367-2630/14/12/125006).

Setter, Ashley, Toros, Marko, Ralph, Jason and Ulbricht, Hendrik (2018) Real-time Kalman filter: cooling of an optically levitated nanoparticle. Physical Review A, 97 (3), [033822]. (doi:10.1103/PhysRevA.97.033822).

Großardt, André, Bateman, James, Ulbricht, Hendrik and Bassi, Angelo (2016) Optomechanical test of the Schrödinger-Newton equation. Physical Review D, 93. (doi:10.1103/PhysRevD.93.096003).

Setter, Ashley, James (2017) Data used in article: Real-Time Kalman filter: Cooling of an Optically Levitated Nanoparticle. University of Southampton doi:10.5258/SOTON/D0355 [Dataset]

Ralph, Jason, Toros, Marko, Maskell, Simon, Jacobs, Kurt, Rashid, Muddassar, Setter, Ashley, James and Ulbricht, Hendrik (2018) Dynamical model selection near the quantum-classical boundary. Physical Review A, 98, 1-9. (doi:10.1103/PhysRevA.98.010102).

Carlesso, Matteo, Paternostro, Mauro, Ulbricht, Hendrik, Vinante, Andrea and Bassi, Angelo (2018) Non-interferometric test of the continuous spontaneous localization model based on rotational optomechanics. New Journal of Physics, 20, [083022]. (doi:10.1088/1367-2630/aad863).

Toros, Marko, Rashid, Muddassar and Ulbricht, Hendrik (2018) Detection of anisotropic particles in levitated optomechanics. Physical Review A, 98, [053803]. (doi:10.1103/PhysRevA.98.053803).

Winstone, George, Rademacher, Markus, Bennett, Robert, Buhmann, Stefan and Ulbricht, Hendrik (2018) Direct measurement of short-range forces with a levitated nanoparticle. Physical Review A. (In Press)

Ulbricht, Hendrik, Toros, Marko, Rashid, Muddassar and Setter, Ashley, James (2018) Precession motion in levitated optomechanics. Physical Review Letters, 121 (25), [253601]. (doi:10.1103/PhysRevLett.121.253601).

Timberlake, Christopher (2018) Data for "Static force characterization with Fano anti-resonance in levitated optomechanics". University of Southampton doi:10.5258/SOTON/D0713 [Dataset]

Timberlake, Christopher, Toros, Marko, Hempston, David, Winstone, George, Rashid, Muddassar and Ulbricht, Hendrik (2019) Static force characterization with Fano anti-resonance in levitated optomechanics. Applied Physics Letters, 114 (2), 1-6, [023104]. (doi:10.1063/1.5081045).

Winstone, George, Bennett, Robert, Rademacher, Markus, Rashid, Muddassar, Buhmann, Stefan and Ulbricht, Hendrik (2018) Direct measurement of the electrostatic image force of a levitated charged nanoparticle close to a surface. Physical Review A, 98 (5), [053831]. (doi:10.1103/PhysRevA.98.053831).

Rashid, Muddassar (2019) Data used in article: Precession Motion in Levitated Optomechanics. University of Southampton doi:10.5258/SOTON/D0523 [Dataset]

Vinante, A., Pontin, A., Rashid, M., Toros, M., Barker, P.F. and Ulbricht, H. (2019) Testing collapse models with levitated nanoparticles: the detection challenge. Physical Review A, 100, 1-13, [012119]. (doi:10.1103/PhysRevA.100.012119).

Ferialdi, Luca, Setter, Ashley, Toroš, Marko, Timberlake, Chris and Ulbricht, Hendrik (2019) Optimal control for feedback cooling in cavityless levitated optomechanics. New Journal of Physics, 21, [073019]. (doi:10.1088/1367-2630/ab2b69/meta).

Restuccia, Sara, Toros, Marko, Gibson, Graham M., Ulbricht, Hendrik, Faccio, Daniele and Padgett, Miles J. (2019) Photon bunching in a rotating reference frame. Physical Review Letters, 123 (11), [110401]. (doi:10.1103/PhysRevLett.123.110401).

Belenchia, Alessio, Gasbarri, Giulio, Kaltenbaek, Rainer, Ulbricht, Hendrik and Paternostro, Mauro (2019) Talbot-Lau effect beyond the point-particle approximation. Physical Review A, 100 (3), 1-12, [033813]. (doi:10.1103/PhysRevA.100.033813).

Carlesso, Matteo, Bassi, Angelo, Paternostro, Mauro and Ulbricht, Hendrik (2019) Testing the gravitational field generated by a quantum superposition. New Journal of Physics, 21, [093052]. (doi:10.1088/1367-2630/ab41c1).

Setter, Ashley, Vovrosh, Jamie A and Ulbricht, Hendrik (2019) Characterization of non-linearities through mechanical squeezing in levitated optomechanics. Applied Physics Letters, 115 (15), [153106]. (doi:10.1063/1.5116121).

Timberlake, Christopher, Gasbarri, Giulio, Vinante, Andrea, Setter, Ashley and Ulbricht, Hendrik (2019) Acceleration sensing with magnetically levitated oscillators above a superconductor. Applied Physics Letters, 115 (22), [224101]. (doi:10.1063/1.5129145).

Setter, Ashley, James (2020) Dataset for: Characterization of Non-linearities through Mechanical Squashing in Levitated Optomechanic. University of Southampton doi:10.5258/SOTON/D0967 [Dataset]

Toros, Marko, Restuccia, Sara, Gibson, Graham M., Cromb, Marion, Ulbricht, Hendrik, Padgett, Miles and Faccio, Daniele (2020) Revealing and concealing entanglement with non-inertial motion. Physical Review A, 101 (4), [043837]. (doi:10.1103/PhysRevA.101.043837).

Vinante, Andrea, Falferi, Paolo, Gasbarri, Giulio, Setter, Ashley James, Timberlake, Christopher and Ulbricht, Hendrik (2020) Ultralow mechanical damping with Meissner-levitated ferromagnetic microparticles. Physical Review Applied. (In Press)


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