Browsing by Author "Abanin, Dmitry"

Now showing items 1-10 of 10

    • Bloch oscillations of bosonic lattice polarons 

      Grusdt, Fabian; Shashi, A.; Abanin, Dmitry; Demler, Eugene A. (American Physical Society (APS), 2014)
      We consider a single-impurity atom confined to an optical lattice and immersed in a homogeneous Bose-Einstein condensate (BEC). Interaction of the impurity with the phonon modes of the BEC leads to the formation of a stable ...

    • Direct measurement of the Zak phase in topological Bloch bands 

      Atala, Marcos; Aidelsburger, Monika; Barreiro, Julio T.; Abanin, Dmitry; Kitagawa, Takuya; Demler, Eugene A.; Bloch, Immanuel (Nature Publishing Group, 2013)
      Geometric phases that characterize the topological properties of Bloch bands play a fundamental role in the band theory of solids. Here we report on the measurement of the geometric phase acquired by cold atoms moving in ...

    • Dissipative Dynamics of a Driven Quantum Spin Coupled to a Bath of Ultracold Fermions 

      Knap, Michael; Abanin, Dmitry; Demler, Eugene A. (American Physical Society (APS), 2013)
      We explore the dynamics and the steady state of a driven quantum spin coupled to a bath of fermions, which can be realized with a strongly imbalanced mixture of ultracold atoms using currently available experimental tools. ...

    • Fractional Quantum Hall Phase Transitions and Four-Flux States in Graphene 

      Feldman, Benjamin Ezekiel; Levin, Andrei Joseph; Krauss, Benjamin; Abanin, Dmitry; Halperin, Bertrand I.; Smet, Jurgen H.; Yacoby, Amir (American Physical Society (APS), 2013)
      Graphene and its multilayers have attracted considerable interest because their fourfold spin and valley degeneracy enables a rich variety of broken-symmetry states arising from electron-electron interactions, and raises ...

    • Interferometric Approach to Measuring Band Topology in 2D Optical Lattices 

      Abanin, Dmitry; Kitagawa, Takuya; Bloch, Immanuel; Demler, Eugene A. (American Physical Society (APS), 2013)
      Recently, optical lattices with nonzero Berry’s phases of Bloch bands have been realized. New approaches for measuring Berry’s phases and topological properties of bands with experimental tools appropriate for ultracold ...

    • Interferometric Probes of Many-Body Localization 

      Serbyn, M.; Knap, Michael; Gopalakrishnan, Sarang; Papić, Z.; Yao, Norman Ying; Laumann, C. R.; Abanin, Dmitry; Lukin, Mikhail D.; Demler, Eugene A. (American Physical Society (APS), 2014)
      We propose a method for detecting many-body localization (MBL) in disordered spin systems. The method involves pulsed coherent spin manipulations that probe the dephasing of a given spin due to its entanglement with a set ...

    • Measuring Z 2 topological invariants in optical lattices using interferometry 

      Grusdt, Fabian; Abanin, Dmitry; Demler, Eugene A. (American Physical Society (APS), 2014)
      We propose an interferometric method to measure ℤ2 topological invariants of time-reversal invariant topological insulators realized with optical lattices in two and three dimensions. We suggest two schemes which both rely ...

    • Microscopic Theory of Resonant Soft-X-Ray Scattering in Materials with Charge Order: The Example of Charge Stripes in High-Temperature Cuprate Superconductors 

      Benjamin, David Isaiah; Abanin, Dmitry; Abbamonte, Peter; Demler, Eugene A. (American Physical Society (APS), 2013)
      We present a microscopic theory of resonant soft-x-ray scattering that accounts for the delocalized character of valence electrons. Unlike past approaches based on local form factors, our functional determinant method ...

    • Radio-frequency spectroscopy of polarons in ultracold Bose gases 

      Shashi, Aditya; Grusdt, Fabian; Abanin, Dmitry; Demler, Eugene A. (American Physical Society (APS), 2014)
      Recent experimental advances enabled the realization of mobile impurities immersed in a Bose-Einstein condensate (BEC) of ultracold atoms. Here, we consider impurities with two or more internal hyperfine states, and study ...

    • Tunable fractional quantum Hall phases in bilayer graphene 

      Maher, P.; Wang, L.; Gao, Y.; Forsythe, C.; Taniguchi, T.; Watanabe, K.; Abanin, Dmitry; Papi , Z.; Cadden-Zimansky, P.; Hone, J.; Kim, Philip; Dean, C. R. (American Association for the Advancement of Science (AAAS), 2014)
      Symmetry-breaking in a quantum system often leads to complex emergent behavior. In bilayer graphene (BLG), an electric field applied perpendicular to the basal plane breaks the inversion symmetry of the lattice, opening a ...