Probing Quantum Hall State Homogeneity with Surface Waves

Probing Quantum Hall State Homogeneity with Surface Waves

Quantum Hall State

2 Quantum Hall State Sung-Sik Lee, Shinsei Ryu, Chetan Nayak, and Matthew P. A. Fisher Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030, USA Microsoft Research, Station Q, CNSI Building, University of California, Santa Barbara, California 93106-4030, USA Department of Physics and Astronomy, University of California, Los Angeles, California ...

Probing interaction induced quantum Hall states

Progress in graphene sample quality starts to disclose rich physics related to Coulomb interactions as well as interaction induced lifting of symmetries associated with the spin and pseudospin degrees of freedom. A key requirement to observe these fragile states in transport has so far been the fabrication of better quality samples. This has been accomplished by placing graphene on BN, or by su...

Quantum entanglement generation with surface acoustic waves

G. Giavaras,1,2 J. H. Jefferson,2 A. Ramšak,3 T. P. Spiller,4 and C. J. Lambert1 1Department of Physics, Lancaster University, Lancaster LA14YB, England 2QinetiQ, St. Andrews Road, Malvern WR143PS, England 3Faculty of Mathematics and Physics, University of Ljubljana and J. Stefan Institute, 1000 Ljubljana, Slovenia 4Hewlett-Packard Laboratories, Filton Road, Stoke Gifford, Bristol, BS34 8QZ, Un...

Optical probing of the spin polarization of the ν=5/2 quantum Hall state.

We apply polarization resolved photoluminescence spectroscopy to measure the spin polarization of a two dimensional electron gas in perpendicular magnetic field. We find that the splitting between the σ+ and σ- polarizations exhibits a sharp drop at ν=5/2 and is equal to the bare Zeeman energy, which resembles the behavior at even filling factors. We show that this behavior is consistent with f...