Projekt

Zurück zur Übersicht

Cold atomic-, mesoscopic-, and vortex physics

Titel Englisch Cold atomic-, mesoscopic-, and vortex physics
Gesuchsteller/in Blatter Johann W.
Nummer 140296
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung Institut für Theoretische Physik ETH Zürich
Hochschule ETH Zürich - ETHZ
Hauptdisziplin Theoretische Physik
Beginn/Ende 01.05.2012 - 30.04.2015
Bewilligter Betrag 587'189.00
Alle Daten anzeigen

Alle Disziplinen (2)

Disziplin
Theoretische Physik
Physik der kondensierten Materie

Keywords (9)

quantum computing; disordered systems; superfluids; classical and quantum phases transitions; Superconductors; cold atomic gases; entanglement; vortex matter; mesoscopic systems

Lay Summary (Englisch)

Lead
Lay summary

We cover a broad spectrum of topics in theoretical condensed matter physics, encom-passing new states of matter, mesoscopic devices, cold atom- and photonic systems. A specific domain attracting our interest are strongly correlated systems, e.g., made from cold trapped atoms or photons. Such systems reveal insulating phases where the atoms/photons are localized on sites, as well as superfluid phases where the atoms/photons can move without dissipation, and non-trivial quantum transitions in between. Soft matter systems represent a classical analogue; in our research they are made of vortices, i.e., flux lines in superconductors, or from dipolar molecules. In both cases, the objects arrange in numerous different phases which are connected by interesting (thermodynamic, structural) transitions.  Furthermore, when studying vortices, disorder plays an important role as defects pin the vortex lines in a superconductor, what makes the material useful for technological applications.  In mesoscopic physics, we are interested in the properties and behavior of small devices, e.g., artifical atoms (quantum dots) or narrow constrictions (quantum point contacts). We study the transport and noise in such systems, but also highly non-classical correlations such as the entanglement between electrons. Our research in this field is also related to quantum information theory and quantum metrology.

Direktlink auf Lay Summary Letzte Aktualisierung: 21.02.2013

Verantw. Gesuchsteller/in und weitere Gesuchstellende

Mitarbeitende

Publikationen

Publikation
A tunable, nonlinear Hong-Ou-Mandel interferometer
Oehri David, Pletyukhov Mikhail, Gritsev Vladimir, Blatter Gianni, Schmidt Sebastian (2015), A tunable, nonlinear Hong-Ou-Mandel interferometer, in Physical Review A, 91, 033816.
Competing structures in two-dimensional trapped dipolar gases
Gränz Barbara, Korshunov Sergey, Geshkenbein Vadim, Blatter Gianni (2014), Competing structures in two-dimensional trapped dipolar gases, in Physical Review B, 90, 060101(R).
Flux Dependent Crossover Between Quantum and Classical Behavior in a dc-SQUID
Butz Susanne, Feofanov Alexey, Fedorov Kirill, Rotzinger Hannes, Thomann Alexander, Mackrodt Brigitte, Dolata Ralf, Geshkenbein Vadim, Blatter Gianni, Ustinov Alexey (2014), Flux Dependent Crossover Between Quantum and Classical Behavior in a dc-SQUID, in Physical Review Letters, 113, 247005.
Projective versus weak measurement of charge in a mesoscopic conductor
Oehri David (2014), Projective versus weak measurement of charge in a mesoscopic conductor, in Physical Review B, 90, 075312.
Self-protected polariton states in photonic quantum metamaterials
Biondi Matteo, Schmidt Sebastian, Blatter Gianni, Tureci Hakan (2014), Self-protected polariton states in photonic quantum metamaterials, in Physical Review A, 89, 025801.
Sequential quantum-enhanced measurement with an atomic ensemble
Lebedev Andrey, Treutlein Philipp, Blatter Gianni (2014), Sequential quantum-enhanced measurement with an atomic ensemble, in Physical Review A, 89, 012118.
Suppression of Geometric Barrier in type-II superconducting strips
Willa Roland, Geshkenbein Vadim, Blatter Gianni (2014), Suppression of Geometric Barrier in type-II superconducting strips, in Physical Review B, 89, 104514.
Finite-temperature perturbation theory for the random directed polymer problem
Korshunov Sergey, Geshkenbein Vadim, Blatter Gianni (2013), Finite-temperature perturbation theory for the random directed polymer problem, in JETP, 117, 570.
From the Jaynes-Cummings-Hubbard to the Dicke model
Schmidt Sebastian, Blatter Gianni, Keeling Jonathan (2013), From the Jaynes-Cummings-Hubbard to the Dicke model, in Journal of Physics B, 46, 224020.
Two-particle entanglement in capacitively coupled Mach-Zehnder interferometers
Vyshnevyy Andriy, Lebedev Andrey, Lesovik Gordey, Blatter Gianni (2013), Two-particle entanglement in capacitively coupled Mach-Zehnder interferometers, in Physical Review B, 87, 165302.
Andreev quantum dot with several conducting channels
Sadovskyy Ivan, Lesovik Gordey, Blatter Gianni, Jonckheere Thibaut, Martin Thierry (2012), Andreev quantum dot with several conducting channels, in Physical Review B, 85, 125442.
Dynamical Aspects of Strong Pinning of Magnetic Vortices in Type-II Superconductors
Thomann Alexander, Geshkenbein Vadim, Blatter Gianni (2012), Dynamical Aspects of Strong Pinning of Magnetic Vortices in Type-II Superconductors, in Physical Review Letters, 108, 217001.
Nonequilibrium Dynamics of Coupled Qubit-Cavity Arrays
Nissen Felix, Schmidt Sebastian, Biondi Matteo, Blatter Gianni, Tureci Hakan (2012), Nonequilibrium Dynamics of Coupled Qubit-Cavity Arrays, in Physical Review Letters, 108, 233603.
Scattering matrix approach to interacting electron transport
Oehri David, Lebedev Andrey, Lesovik Gordey, Blatter Gianni (2012), Scattering matrix approach to interacting electron transport, in Physical Review B, 86, 125301.
Transition from slow Abrikosov to fast moving Josephson vortices in iron pnictide superconductors
Moll Philip, Balicas Luis, Geshkenbein Vadim, Blatter Gianni, Karpinski Janos, Zhigadlo Nikolai, Batlogg Bertram (2012), Transition from slow Abrikosov to fast moving Josephson vortices in iron pnictide superconductors, in Nature Materials, 12, 134.

Zusammenarbeit

Gruppe / Person Land
Formen der Zusammenarbeit
The Weizmann Institute of Science, Rehovot Israel (Asien)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
Argonne National Laboratories, Illinois Vereinigte Staaten von Amerika (Nordamerika)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
Landau Institute Moscow Russland (Europa)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
- Publikation
University of Stuttgart Deutschland (Europa)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten
Laboratoire Physique Theorique des Liquides, Université de Paris VI Frankreich (Europa)
- vertiefter/weiterführender Austausch von Ansätzen, Methoden oder Resultaten

Verbundene Projekte

Nummer Titel Start Förderungsinstrument
159238 Quantum coherent and soft matter systems 01.05.2015 Projektförderung (Abt. I-III)
124456 Cold atomic-, mesoscopic-, and vortex physics 01.05.2009 Projektförderung (Abt. I-III)

Abstract

We study a variety of topics in theoretical condensed matter physics related to superconductivity, quantum and atom optics, as well as mesoscopic physics. Our main interest in superconductors is with its phenomenological aspects, vortex matter, pinning, disordered systems. Within the domain of quantum optics, we are interested in the structural competition in dipolar gases with its rich structure, in particular, new tunable solitonic phases in two dimensions. Strongly correlated photons in hybrid (cavity, qubit) devices (cavity QED) define a multi-faceted system, allowing to study a wide range of phenomena from new bulk photonic phases in extended cavity arrays to mesoscopic aspects (photon transport, photon blockade) in few cavity systems. Our main interest in electronic mesoscopic systems is in the interplay of single-particle transport, interactions, entanglement, and wave-packet resurrection providing a strategy to enhance the coherence time in these systems. Applications in quantum information processing remain a topic of continuous interest.
-