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Swiss National Science Foundation (SNSF)

Wildhainweg 3P.O. Box

CH-3001 Bern

Phone +41 31 308 22 22

English title | Cold atomic-, mesoscopic-, and vortex physics |
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Applicant | Blatter Johann W. |

Number | 124456 |

Funding scheme | Project funding (Div. I-III) |

Research institution | Institut für Theoretische Physik ETH Zürich |

Institution of higher education | ETH Zurich - ETHZ |

Main discipline | Theoretical Physics |

Start/End | 01.05.2009 - 30.04.2012 |

Approved amount | 544'688.00 |

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

Lead |
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Lay summary |

We carry out theoretical studies on various types of solid state systems: on the one hand, these are quantum coherent systems such as superconducting metals, superfluid bosonic and fermionic gases, and artificial structures such as quantum Josephson junction arrays. We are interested in novel phases and (quantum) phase transitions where these materials undergo a drastic change in their behavior, e.g. ordered versus disordered phases or mobile versus immobile phases. Furthermore, we study topological excitations such as vortices and systems of vortices; these define an interesting soft-matter system with similarities to polymer physics. When subjected to quenched disorder, these systems exhibit highly non-trivial statistical (glassy) properties. Our studies are useful in the context of applications of novel materials, e.g., superconducting transport. Our second field of interest is mesoscopic physics. Here we study theoretically the transport properties (average current, noise, full counting statistics, etc.) in small mesoscopic devices (normal-metallic and/or superconducting structures) and investigate basic quantum phenomena such as entanglement generation, detection, and conversion. Potential applications of this research is in devices for (quantum) information processing. |

Direct link to Lay Summary | Last update: 21.02.2013 |

Name | Institute |
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Name | Institute |
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Publication |
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Spatial correlations in driven-dissipative photonic lattices |

Long-range spin coherence in a strongly coupled all-electronic dot-cavity system |

Analysis of a parametrically driven exchange-type gate and a two-photon excitation gate between superconducting qubits |

Vortex dynamics in type-II superconductors under strong pinning conditions |

Nonequilibrium gas-liquid transition in the driven-dissipative photonic lattice |

Computational complexity of exterior products and multiparticle amplitudes of noninteracting fermions in entangled states |

Low-energy dynamical response of an Anderson insulator with local attraction |

Phase Diagram and Excitations of the Jaynes-Cummings-Hubbard Model |

Trading coherence and entropy by a quantum Maxwell demon |

Transport Spectroscopy of a Spin-Coherent Dot-Cavity System |

Competing structures in two dimensions: Square-to-hexagonal transition |

Frustrated polaritons |

Optimal noninvasive measurement of full counting statistics by a single qubit |

Probing the pinning landscape in type-II superconductors via Campbell penetration depth |

Bosonic Condensation and Disorder-Induced Localization in a Flat Band |

Time correlators from deferred measurements |

Campbell Response in Type-II Superconductors under Strong Pinning Conditions |

Incompressible Polaritons in a Flat Band |

Campbell penetration in the critical state of type-II superconductors |

Tunable, nonlinear Hong-Ou-Mandel interferometer |

Flux-Dependent Crossover between Quantum and Classical Behavior in a dc SQUID |

Quantum-Limited Amplification and Entanglement in Coupled Nonlinear Resonators |

Observation of a Dissipation-Induced Classical to Quantum Transition |

Projective versus weak measurement of charge in a mesoscopic conductor |

Competing structures in two-dimensional trapped dipolar gases |

Suppression of geometric barrier in type-II superconducting strips |

Self-protected polariton states in photonic quantum metamaterials |

Sequential quantum-enhanced measurement with an atomic ensemble |

From the Jaynes–Cummings–Hubbard to the Dicke model |

Circuit QED lattices: Towards quantum simulation with superconducting circuits |

Two-particle entanglement in capacitively coupled Mach-Zehnder interferometers |

Finite Temperature Perturbation Theory for the Random Directed Polymer Problem |

Transition from slow Abrikosov to fast moving Josephson vortices in iron pnictide superconductors |

Quantum counting algorithm and its application in mesoscopic physics |

Andreev quantum dot with several conducting channels |

Coherent pumping of a Mott insulator: Fermi golden rule versus Rabi oscillations |

Density of States and Critical Behavior of the Coulomb Glass |

Dispersive Photon Blockade in a Superconducting Circuit |

Dynamical Aspects of Strong Pinning of Magnetic Vortices in Type-II Superconductors |

Dynamical critical exponent of the Jaynes-Cummings-Hubbard model |

Dynamical Resurrection of the Visibility in a Mach-Zehnder Interferometer |

Dynamical Unbinding Transition in a Periodically Driven Mott Insulator |

Dynamically Generated Double Occupancy as a Probe of Cold Atom Systems |

Excitations of Strongly Correlated Lattice Polaritons |

Free-energy distribution functions for the randomly forced directed polymer |

Influence of a random telegraph process on the transport through a point contact |

Measurement Back-Action in Quantum Point-Contact Charge Sensing |

Mesoscopic aspects of strongly interacting cold atoms |

Münchhausen effect: tunneling in an asymmetric SQUID |

Noise-induced spectral shift measured in a double quantum dot |

Nonequilibrium delocalization-localization transition of photons in circuit quantum electrodynamics |

Polariton Mott insulator with trapped ions or circuit QED |

Quantum abacus for counting and factorizing numbers |

Quantum instability in a dc SQUID with strongly asymmetric dynamical parameters |

Single-Particle Excitations Generated by Voltage Pulses |

Statistics of radiation emitted from a quantum point contact |

Strong Coupling Theory for the Jaynes-Cummings-Hubbard Model |

Surer et al. Reply |

Number | Title | Start | Funding scheme |
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140296 | Cold atomic-, mesoscopic-, and vortex physics | 01.05.2012 | Project funding (Div. I-III) |

116639 | Quantum condensed and quantum coherent systems | 01.05.2007 | Project funding (Div. I-III) |

116639 | Quantum condensed and quantum coherent systems | 01.05.2007 | Project funding (Div. I-III) |

We carry out theoretical studies on various types of solid state systems: on the one hand, these are quantum coherent systems such as superconducting metals, superfluid bosonic and fermionic gases, and quantum Josephson junction arrays. We are interested in novel phases and (quantum) phase transitions where these materials undergo a drastic change in behavior, e.g. ordered versus disordered or mobile versus immobile phases. Furthermore, we study topological excitations such as vortices and systems of vortices; these define an interesting soft-matter system with similarities to polymer physics. When subjected to quenched disorder, these systems exhibit highly non-trivial statistical (glassy) properties. These studies are useful in the context of applications of novel materials, e.g., superconducting transport.Our second field of interest is mesoscopic physics. Here we study theoretically the transport properties (average current, noise, full countingstatistics, etc.) in small mesoscopic devices (normal-metallic and/or superconducting) and study basic quantum phenomena such as entanglement generation, detection, and conversion, with the goal to understand their potential as devices for quantum information processing.

Swiss National Science Foundation (SNSF)

Wildhainweg 3P.O. Box

CH-3001 Bern

Phone +41 31 308 22 22

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