Organizational meeting Room: 132:028

Many-body localization and entanglement

• Jens Bardarson (Max Planck Institute for the Physics of Complex Systems, Germany)

Room: 132:028

Short break Room: 132:028

Measuring topological transitions in superconducting qubits

• Michael Kolodrubetz (Boston University, USA)

Room: 132:028

Quantum quenches from excited states in the Ising chain

• Leda Bucciantini (Pisa University, Italy)

Room: 132:028

Short break Room: 132:028

Dissipative preparation of squeezed states with ultracold atomic gases

• Gentaro Watanabe (APCTP, Korea)

Room: 132:028

Realizations of synthetic gauge fields in the dice lattice geometry

• Gunnar Möller (Cambridge University, UK)

Room: 132:028

Short break Room: 132:028

Features of tunneling and noise through point contact devices in chiral systems

• Joost Slingerland (National University of Ireland, Ireland)

Room: 132:028

How to directly detect the exchange statistics of Abelian anyons

• Heung-Sun Sim (KAIST, Korea)

Room: 132:028

Synthetic helical liquid in a quantum wire

• Mariana Malard (University of Brasilia, Brazil)

Room: 132:028

Short break Room: 132:028

Disordered helical and quasi-helical electron liquids in one dimension

• George Japaridze (Ilia State University, Georgia)

Room: 132:028

Multi-component fractional quantum Hall states in lattice models

• Layla Hormozi (National University of Ireland, Ireland)

Room: 132:028

Please see the CONFERENCE HOME PAGE for the scientific program this week! Room: 132:028

Organizational meeting Room: 132:028

Non-Higgs superconductivity with topological order

• Cristina Diamantini (University of Perugia, Italy)

Room: 132:028

Short break Room: 132:028

Topological ordered surfaces of 3D TIs from coupled 1D wires

• David Mross (Caltech, USA)

Room: 132:028

Six-vertex model: Exact results and open problems

• Vladimir Korepin (Stony Brook University, USA)

Room: 132:028

Short break Room: 132:028

Recent progress on the Rabi and Dicke models

• Murray Batchelor (Chongqing University, China)

Room: 132:028

Bell-paired states inducing volume law for entanglement entropy in fermionic lattices

• Simone Paganelli (International Institute of Physics, Brazil)

Room: 132:028

Simulation of quantum magnetism in excited bands of optical lattices

• Fernanda Pinheiro (Stockholm University & Nordita)

Room: 132:028

Short break Room: 132:028

Chiral d-wave superconductivity in doped graphene

• Annica Black-Schaffer (Uppsala University, Sweden)

Room: 132:028

Mimicking interacting relativistic theories with stationary pulses of light

• Vladimir Korepin (Stony Brook University, USA)

Room: 132:028 One of the most well known relativistic field theory models is the Thirring model (TM). We propose a quantum system as a simulator of the TM dynamics. Here the relativistic particles are mimicked by polarized photons in a quantum nonlinear medium. We show that the entire set of regimes of the Thirring model -- bosonic or fermionic, and massless or massive -- can be faithfully reproduced using coherent light trapping techniques. The sought after correlations' scalings can be extracted by simple probing of the coherence functions of the light using standard optical techniques.

Wigner crystal phases in bilayer graphene

• Peter Silvestrov (TU Braunschweig)

Room: 132:028

Short break Room: 132:028

Tonks-Girardeaux gas in star junctions

• Francesco Buccheri (IIP-UFRN, Brazil)

Room: 132:028

Quantum dot spin cellular automata for realizing a quantum processor

• Abolfazl Bayat (University College London, UK)

Room: 132:028

Short break Room: 132:028

Entanglement effect in a two-channel Kondo system under bias

• Jong-Bae Hong (APCTP, Korea)

Room: 132:028

Entanglement and particle identity

• Amilcar Queiroz (IF-UnB, Brazil & DFTUZ-UniZar, Spain)

Room: 132:028

Short break Room: 132:028

The entropy change in a bath coupled to a driven quantum system

• Erik Aurell (KTH Computational Biology)

Room: 132:028 The entropy change in the environment of a classical stochastic system is an important quantity which underlies the recent extension of thermodynamics to the mesoscopic domain. It can be combined with the energy change in the system to give a fluctuating work which enters in the fluctuation relations, e.g. Jarzynski's equality, that hold also far from equilibrium. Generalization of this theory to the quantum domain are not obvious, see Campisi et al Rev Mod Phys vol 83 (2011) for a review, and Hekking & Pekola Phys Rev Lett vol 111, Horowitz & Parrondo New J. Phys vol 15 and Chetrite & Mallick J Stat Phys vol 148 for a selection of more recent contributions. Suppose that the quantum entropy change in the environment is defined as the change of von Neumann entropy in a bath, a proposal, in this context, due to Esposito, Lindenberg and van den Broeck (2010). Suppose further that the bath is comprised by a large number of harmonic oscillators, linearly coupled to the system, which is initially in thermal equilibrium. Suppose finally that the change occurs between two measurements on the system during a process when the system interacts with the bath and is also driven externally. Then the bath variables can be integrated out and the entropy change computed by the method of Feynman and Vernon. For an Ohmic bath (Caldeira-Leggett model at high enough temperature) the entropy change has the correct classical limit of minus (inverse temperature) * (work done by the bath on the system). I will describe this calculation and discuss the first corrections of the high- temperature limit.

Diagnosing a strong topological insulator by quantum oscillations

• Revaz Ramazashvili (CNRS, Toulouse (France))

Room: 132:028

Junctions of topological insulators and superconductors

• Oindrilla Deb (Indian Institute of Science, India)

Room: 132:028

Short break Room: 132:028

Topological rf SQUID with a frustrating π-junction for probing the Majorana bound state

• Arturo Tagliacozzo (Universita' di Napoli "Federico II", Italy)

Room: 132:028

Nonlinear Bogoliubov transformations applied to metal-insulator transitions

• Stellan Östlund (University of Gothenburg, Sweden)

Room: 132:028

XY model revisited

• Manuela Carvalho (Universidade de Brasilia, Brazil)

Room: 132:028

Short break Room: 132:028

Vanishing spin stiffness in the spin-1/2 Heisenberg chain for any nonzero temperature

• José Carmelo (University of Minho, Portugal)

Room: 132:028

Improving measurement precision with Weak Measurements

• Yaron Kedem (KTH, Sweden)

Room: 132:028 The weak measurement protocol, introduced by Aharonov, Albert and Vaidman 25 years ago, is now in widespread use. They showed that weak coupling of a measurement device to a quantum system, together with a postselection, can yield an intriguing quantity which was named The Weak Value. In some contexts an observable on the system can be replaced by its Weak Value, even though it can be much larger than any of its eigenvalues and is also complex in general. The method of weak measurements have been shown to be highly useful both for the analysis of fundamental issues in quantum mechanics and for practical applications such as precision improvement. We will start with a review of the formalism and then discuss a recent development regarding the enhancement of the Signal to Noise Ratio for precision measurements in the presence of technical noise. We will see that when imaginary weak values are used, such a noise can improve the precision. Reference: Y. Kedem, Phys. Rev. A 85, 060102 (R) (2012)