Professor Stefan Kuhr

Physics

Personal statement

Stefan Kuhr is Head of the Optics Division and the Experimental Quantum Optics and Photonics Group. His current research work focuses on single-atom resolved manipulation and detection of ultracold atoms in optical lattices (details). Stefan joined the Physics Department of the University of Strathclyde in 2011 and holds the SUPA Chair of Quantum Information. From 2007 - 2011 he has been working as a senior scientist at the University of Mainz and the Max-Planck-Institute for Quantum Optics in Garching. Stefan received his PhD in 2003 in Bonn and was a postdoctoral fellow at the Ecole Normale Supérieure in Paris from 2003 - 2006. | Researcher-ID F-7296-2011; Google Scholar Profile. |

Prof. Stefan Kuhr
University of Strathlcyde
Department of Physics
John Anderson Building, Room 819
Glasgow G4 0NG
United Kindgom

NEW: Fermionic quantum-gas microscope published in Nature Physics: Nature Physics, Advance Online Publication (13 July 2015).

Publications

Note : a simple laser shutter with protective shielding for beam powers up to 1 W
Colquhoun Craig D, Di Carli Andrea, Kuhr Stefan, Haller Elmar
Review of Scientific Instruments Vol 89 (2018)
https://doi.org/10.1063/1.5053212
Sub-Doppler laser cooling of 40K with Raman gray molasses on the D2 line
Bruce G D, Haller E, Peaudecerf B, Cotta D A, Andia M, Wu S, Johnson M Y H, Lovett B W, Kuhr S
Journal of Physics B: Atomic, Molecular and Optical Physics Vol 50 (2017)
https://doi.org/10.1088/1361-6455/aa65ea
Quantum-gas microscopes : a new tool for cold-atom quantum simulators
Kuhr Stefan
National Science Review Vol 3, pp. 170-172 (2016)
https://doi.org/10.1093/nsr/nww023
Single-atom imaging of fermions in a quantum-gas microscope
Haller Elmar, Hudson James, Kelly Andrew, Cotta Dylan A, Peaudecerf Bruno, Bruce Graham D, Kuhr Stefan
Nature Physics Vol 11, pp. 738-742 (2015)
https://doi.org/10.1038/nphys3403
Quantum dynamics of a single, mobile spin impurity
Fukuhara Takeshi, Kantian Adrian, Endres Manuel, Cheneau Marc, Schauß Peter, Hild Sebastian, Bellem David, Schollwöck Ulrich, Giamarchi Thierry, Gross Christian, Bloch Immanuel, Kuhr Stefan
Nature Physics Vol 9, pp. 235-241 (2013)
https://doi.org/10.1038/nphys2561
Single-site-and single-atom-resolved measurement of correlation functions
Endres M, Cheneau M, Fukuhara T, Weitenberg C, Schauß P, Gross C, Mazza L, Bañuls M C, Pollet L, Bloch I, Kuhr S
Applied Physics B: Lasers and Optics Vol 113, pp. 27-39 (2013)
https://doi.org/10.1007/s00340-013-5552-9

more publications

Research interests

Stefan Kuhr’s research activities are focussed on optical lattices with single-atom detection capabilities (link to EQOP home page). His team at the University of Strathclyde very recently realized a fermionic quantum-gas microscope [Nature Physics 11, 738 (2015)]. As a senior scientist at the Max-Planck Institute of Quantum Optics (2009-2011) and in Mainz (2007-2009), he pioneered single-atom-resolved detection and manipulation of strongly correlated ultracold atoms in optical lattices [Nature 467, 68 (2010)]. He demonstrated addressing of individual atoms with sub-diffraction-limited resolution [Nature 471, 319 (2011)], the measurements of quantum fluctuations across the superfluid-to-Mott-Insulator transition [Science 334, 200 (2011)], direct measurement of correlation spreading [Nature 481, 484 (2012)], the observation of the ‘Higgs’ amplitude mode [Nature 487, 454, (2012)] and Rydberg blockade [Nature 491, 87 (2012)], and time-dynamics of spin-impurities [Nature Physics 9, 235 (2013)]. Kuhr’s other key contributions to quantum optics were quantum non-demolition detection of single photons [Nature 446, 297 (2007), Nature 448, 889 (2007)] (postdoc with 2012 Physics Nobel Laureate Serge Haroche at the Ecole Normale Supérieure in Paris) and a “single-atom conveyor-belt” [Science 293, 278 (2001)] (PhD work in Bonn).

Projects

Doctoral Training Partnership (DTP 2016-2017 University of Strathclyde) | Despard, Ilian
Kuhr, Stefan (Principal Investigator) Griffin, Paul (Co-investigator) Despard, Ilian (Research Co-investigator)
01-Jan-2017 - 01-Jan-2021
Designing Out-of-Equilibrium Many-Body Quantum Systems (DesOEQ) (EPSRC Programme Grant)
Daley, Andrew (Principal Investigator) Kuhr, Stefan (Co-investigator)
"Huge amounts of data are routed through the internet and are being processed by our computers and mobile phones every second. Always being connected to the internet has transformed many aspects of our lives, from the way we do our shopping to how we meet friends. The demand for further improving our ability to process data is driven by ever more devices being connected to the internet and services being moved online to improve our quality of life.

The physical principles underlying our technology to store and process data are based on our understanding of out-of-equilibrium dynamics. Better control of this physics is crucial to further shrinking electronic devices and to address the major challenge of developing energy-efficient switching and communications links. Such further progress in information processing technologies is expected to heavily rely on quantum effects like superposition and entanglement in the near future.

In addition, as the fruits of the recently initiated National Quantum Technology Programme start to become available after 2020, it will be even more important to have the knowledge in place to be able to face the next generation of technological challenges, such as the scaling up of the newly developed quantum devices. How to exploit the advantages of these increasingly complex devices in the presence of noise and decoherence is intrinsically an issue of out-of-equilibrium many-body quantum physics. It is therefore crucial to put methods in place now that will underpin the design of out-of-equilibrium quantum systems.

Our vision is to explore, understand, and design out-of-equilibrium quantum dynamics that are relevant for such future communication and quantum technologies, using quantum simulators with ultracold atomic gases in optical potentials. Ultracold gases are a unique platform in that they offer controllability and versatility in the quantum regime that is currently unparalleled by any other quantum system. We will set up and investigate ultracold atom simulations to help planning and designing out-of-equilibrium many-body quantum dynamics similarly to how wind tunnels are utilized in aerodynamics.

This project will capitalise on these capabilities by exploring three broad aspects of out-of-equilibrium dynamics that are especially relevant for future technologies: (i) switching behaviour of driven quantum systems, which could also be used to design enhanced classical information processing devices; (ii) driven quantum systems as quantum-enhanced sensors; and (iii) engineering emergent phenomena in driven quantum systems. Our activity will bind together existing internationally leading researchers within the UK on a novel common project of high scientific interest and technological relevance. This provides a unique opportunity for the UK to adopt a world-leading position in the use of quantum simulators to explore out-of-equilibrium dynamics in quantum many-body systems."
20-Jan-2017 - 19-Jan-2022
Doctoral Training Partnership (DTP 2016-2017 University of Strathclyde) | Brown, Matthew
Kuhr, Stefan (Principal Investigator) Daley, Andrew (Co-investigator) Brown, Matthew (Research Co-investigator)
01-Jan-2016 - 01-Jan-2020
QuProCS - Quantum Information Probes for Complex Systems - H2020-FET PROACTIVE
Kuhr, Stefan (Principal Investigator) Daley, Andrew (Co-investigator) Haller, Elmar (Co-investigator)
01-Jan-2015 - 31-Jan-2018
Engineered Light Potentials for Quantum Simulation with Individual-Atom Resolution - ELiQSIR
Kuhr, Stefan (Principal Investigator)
01-Jan-2015 - 31-Jan-2017
Simulators and Interfaces with Quantum Systems (SIQS - FP7 QICT-call-9)
Kuhr, Stefan (Principal Investigator)
01-Jan-2013 - 30-Jan-2016

more projects