Events Archive

Condensed Matter Seminar
Mon, Jul 18, 2011, 1:30 pm6:30 pm
Abstract: The fundamental collective degree of freedom of fractional quantum Hall states is identified as a unimodular two-dimensional spatial metric that characterizes the local shape of the correlations of the incompressible fluid. Its quantum fluctuations are controlled by a topologically-quantized“guiding-center spinâ€

Jainendra Jain TBA
Mon, May 2, 2011, 1:15 pmMon, Feb 28, 2011, 6:00 pm
Abstract: TBA

Xiao-Liang Qi Title: TBA
Mon, Mar 14, 2011, 1:15 pm6:00 pm
Abstract: TBA

Shinsei Ryu, Berkeley
Mon, Mar 7, 2011, 1:15 pm6:00 pm


Sir Michael Berry, Hamiltonian Lecturer
Mon, Feb 21, 2011, 1:15 pm6:00 pm


Sir Michael Berry, Hamiltonian Lecturer
Mon, Feb 14, 2011, 1:15 pm6:00 pm


Giacomo Coslovich ""Disclosing the ultra-fast dynamics of competing phases in high-temperature superconductors by broadband time-resolved optical spec
Mon, Feb 7, 2011, 1:15 pm6:00 pm
Abstract: Understanding the interplay between the phases present in a high-temperature superconductor (superconducting, pseudogap, strange metal and Fermi-liquid-like) is the key-concept for shining light on the nature of the superconductivity mechanisms in copper-oxide based superconductors. In this seminar I will discuss this physics by…
Kamran Behnia, "Phase diagram of Bismuth in the extreme quantum limit"
Mon, Jan 31, 2011, 1:30 pm6:00 pm
Abstract: A rare opportunity to explore the fate of a three-dimensional gas of highly mobile electrons confined to their lowest Landau levels is provided by elemental semi-metals. Coulomb interaction, neglected in the band picture, is expected to become significant in this extreme quantum limit, with poorly understood consequences. Our study of…
Sebastian Schmidt
Mon, Dec 6, 2010, 1:15 pm6:00 pm
Title: Strongly correlated photons in coupled cavity/circuit QED systems Abstract: Motivated by the recent success of engineering strong light-matter interaction in various cavity/circuit QED architectures, there has been a surge of interest in realizing condensed matter-like systems with photonic systems. One of the most…
Rahul Roy
Wed, Dec 1, 2010, 1:15 pm2:30 pm
Title & Abstract: TBA

Woowon Kang from the University of Chicago- "Experimental Study of Non-Abelian Statistics in the Fractional Quantum Hall Effect"
Mon, Nov 22, 2010, 1:15 pm6:00 pm
Topological phases of matter, apart from being a fundamental phenomenon in quantum physics, has a potential application in fault tolerant quantum computation. The fractional quantum Hall effect to date is the most clearly established example of a topological phase. Topological phases are notable for possessing exotic particles as elementary…
Matthew Fisher
Mon, Nov 15, 2010, 1:15 pm6:00 pm
Title: Interlayer Coherent Composite Fermi Liquids in Quantum Hall Multilayers Abstract Composite Fermions have played a central role in the field of quantum Hall physics. Perhaps the most striking manifestation of composite Fermions is their formation of a Fermi sea at certain even denominator fillings, notably = 1/2. Here, we introduce…
Eugene Demler
Mon, Nov 1, 2010, 1:15 pm6:00 pm
Title: Nonequilibrium quantum dynamics of artificial matter Abstract: Nonequilibrium dynamics plays a prominent role in many-body systems realized with artificial matter. In this talk I will discuss two examples relevant to recent experiments: competition of pairing and magnetism near Feshbach resonances in ultracold fermions, and realization…
Ian Spielman, NIST
Mon, Oct 25, 2010, 1:15 pm6:00 pm
Title: "A Bose-Einstein condensate subject to synthetic gauge fields" Abstract: Here will first present our experimental work creating a synthetic magnetic field in a Bose-Einstein condensate (BEC) generated by an abelian vector potential and then discuss how we extend this technique to create spin-orbit coupling (and equal sum of Rashba and…
Condensed Matter Seminar -- Rebecca Flint
Mon, Oct 11, 2010, 1:15 pm6:00 pm
"How spins become pairs: Composite pairing and magnetism in the 115 family of heavy fermion superconductors

Thomas Jackson
Mon, Sep 27, 2010, 1:15 pm6:00 pm
Title: "Projection Hamiltonians for clustered quantum Hall wavefunctions" Abstract: One of the main measures for determining whether a trial wavefunction for the fractional quantum Hall effect is physically realistic is the properties of an associated projection Hamiltonian, an artificial few-body Hamiltonian constructed so that the given…
Andreas Heinrich
Mon, Sep 20, 2010, 1:15 pm6:00 pm
Title: "Measuring the spin dynamics of single atoms with nanosecond time resolution" Abstract:Spin is a fundamental quantity in quantum mechanics. Its manifestations range from the magnet on our fridge to the magnetic-field dependent splitting of a beam of evaporated atoms in the famous Stern-Gerlach experiment. With the advent of spin-based…
Patrick Lee, MIT "In Search of Majorana"
Fri, Sep 17, 2010, 1:30 pm6:00 pm
Abstract:Majorana is a fermion which is its own anti-particle. Often described as half a fermion, it is expected to have novel braiding properties in 2D, but has never been observed in Nature. Proposals for realizing them in condensed matter center on making vortices in p+ip superconductors. We have found that the Majorana end states which was…
Condensed Matter Seminar "Metallic conduction and superconductivity in the t-J model: Evolution of the spin states from half filling"
Wed, Aug 11, 2010, 11:00 am6:00 pm
Abstract: Many believe, following Anderson, that the origin of the unusual behavior of cuprate superconductors is related to the physics of the undoped phase. However, this connection has not been established theoretically. I will discuss the properties of a renormalized Hamiltonian derived recently from the t-J model, which is required to…
Andreas Wallraff, "Measuring the correlations of a Microwave Frequency Single Photon source"
Wed, Jun 16, 2010, 2:00 pm3:00 pm

ABSTRACT: Circuit quantum electrodynamics (QED) allows for excellent control and measurement of the quantum mechanical properties of qubits, photons and their interactions. As a result, circuit QED is an ideal test bed to investigate the quantum nature of light. In our experiments we prepare a complete family of zero and one photon…