mesoscopic physics; transport; entanglement; quantum electron optics; quantum metrology; superconductors; vortex matter; Josephson junction devices; disordered systems; photons in non-linear media; strongly correlated photons; competing orders; commensurate-incommensurate transition; solitons
N.S. Kirsanov A.V. Lebedev M.V. Suslov V.M. Vinokur G. Blatter and G.B. Lesovik (2018), Entropy Dynamics in the System of Interacting Qubits, in Journal of Russian Laser Research
, 39, 101.
A.R. Shlyakhov V.V. Zemlyanov M.V. Suslov A.V. Lebedev G.S. Paraoanu G.B. Lesovik G. Blatter (2018), Quantum metrology with a transmon qutrit, in Physical Review A
, 97, 022115.
Marco Roth Marc Ganzhorn Nikolaj Moll Stefan Filipp Gian Salis and Sebastian Schmidt (2017), Analysis of a parametrically driven exchange-type gate and a two-photon excitation gate between superconducting qubits, in Physical Review A
, 96, 062323.
M.S. Ferguson D. Oehri C. Rössler T. Ihn K. Ensslin G. Blatter O. Zilberberg (2017), Long-range spin-coherence in a strongly-coupled all-electronic dot-cavity system, in Physical Review B
, 96, 235431.
M. Biondi G. Blatter H. E. Türeci S. Schmidt (2017), Nonequilibrium gas-liquid transition in the driven-dissipative photonic lattice, in Physical Review A
, 96, 043809.
S. Schmidt and G. Blatter (2017), Phase Diagram and Excitations of the Jaynes-Cummings-Hubbard Model
, Springer, Cham.
Matteo Biondi Saskia Lienhard Gianni Blatter Hakan E. Tureci Sebastian Schmidt (2017), Spatial correlations in driven-dissipative photonic lattices, in New Journal of Physics
, 19, 125016.
A.U. Thomann V.B. Geshkenbein G. Blatter (2017), Vortex dynamics in type II superconductors under strong pinning conditions, in Physical Review B
, 96, 144516.
D. Oehri A.V. Lebedev G.B. Lesovik and G. Blatter (2016), Time correlators from deferred measurements, in Physical Review B
, 93, 045308.
F. Baboux L. Ge T. Jacqmin M. Biondi E. Galopin A. Lemaître L. Le Gratiet I. Sagnes, S. Schmidt H.E. Türeci A. Amo and J. Bloch (2016), Bosonic Condensation and Disorder-Induced Localization in a Flat Band, in Physical Review Letters
, 116, 066402.
Barbara Gränz Sergey E. Koshunov Vadim B. Geshkenbein Gianni Blatter (2016), Competing structures in two dimensions: square-to-hexagonal transition, in Physical Review B
, 94, 054110.
S. Schmidt (2016), Frustrated polaritons, in Physica Scripta
, 91, 073006.
A.V. Lebedev G.B. Lesovik G. Blatter (2016), Optimal non-invasive measurement of Full Counting Statistics by a single qubit, in Physical Review B
, 93, 115140.
R. Willa V. B. Geshkenbein G. Blatter (2016), Probing the pinning landscape in type-II superconductors via Campbell penetration depth, in Physical Review B
, 93, 064515.
A. V. Lebedev D. Oehri G. B. Lesovik G. Blatter (2016), Trading coherence and entropy by a quantum Maxwell demon, in Physical Review A
, 94, 052133.
R. Willa V.B. Geshkenbein and G. Blatter (2015), Campbell penetration in the critical state of type-II superconductors, in Physical Review B
, 92, 134501.
R. Willa V.B. Geshkenbein R. Prozorov and G. Blatter (2015), Campbell response in type-II superconductors under strong pinning conditions, in Physical Review Letters
, 115, 207001.
M. Biondi E.P.L. van Nieuwenburg G. Blatter S.D. Huber and S. Schmidt (2015), Incompressible polaritons in a flat band, in Physical Review Letters
, 115, 143601.
C. Rössler D. Oehri O. Zilberberg G. Blatter, M. Karalic J. Pijnenburg A. Hofmann T. Ihn K. Ensslin C. Reichl and W. Wegscheider (2015), Transport Spectroscopy of a Spin-Coherent Dot-Cavity System, in Physical Review Letters
, 115, 166603.
D. Oehri M. Pletyukhov V. Gritsev G. Blatter and S. Schmidt (2015), Tunable, nonlinear Hong-Ou-Mandel interferometer, in Physical Review A
, 91, 033816.
Our research in condensed matter theory focuses on two modern topics: the quantum coherent systems we study hold the potential for applications in quantum-metrology, -sensing and -information processing. We are interested in electronic mesoscopic systems and atomic ensembles, where the vision is to further develop the fields of electron quantum optics andquantum metrology. Coupled cavity systems with non-linear elements (qubits or atoms) generate interacting polaritons, i.e., mixed photon-matter states, with widely tunable properties that can be engineered to fulfill various tasks. These systems are externally pumped and dissipative and therefore inherently non-equilibrium, opening up a wide field of research opportunities related to quantum many-body- and mesoscopic physics. Our second field of expertise deals with soft matter systems, specifically vortex matter in type II superconductors and soliton arrays, e.g., in cold molecular systems with long-range interactions. Our interest in vortex matter focuses on the development of the theory of strong pinning in disordered systems and its interrelation with the theory of weak collective pinning. Solitonic arrays usually result from competing orders (commensurate-incommensurate transitions) and constitute themselves a new type of matter similar to vortices in superconductors. Given the high tunability and relevance of fluctuations in cold atomic/molecular systems, these define a new implementation of this classic problem that allows for its systematic study.