Now showing items 1-7 of 7

    • Antilocalization of Coulomb Blockade in a Ge/Si Nanowire 

      Higginbotham, A; Kuemmeth, F; Larsen, T. W.; Fitzpatrick, M.; Yao, Jun; Yan, H.; Lieber, Charles M.; Marcus, C (American Physical Society (APS), 2014)
      The distribution of Coulomb blockade peak heights as a function of magnetic field is investigated experimentally in a Ge/Si nanowire quantum dot. Strong spin-orbit coupling in this hole-gas system leads to antilocalization ...
    • Carbon Nanotubes for Coherent Spintronics 

      Kuemmeth, Ferdinand; Churchill, Hugh Olen Hill; Herring, Patrick Kenichi; Marcus, Charles Masamed (Elsevier Science Limited, 2010)
      Carbon nanotubes bridge the molecular and crystalline quantum worlds, and their extraordinary electronic, mechanical and optical properties have attracted enormous attention from a broad scientific community. We review ...
    • Electron–Nuclear Interaction in \(^{13}C\) Nanotube Double Quantum Dots 

      Churchill, Hugh Olen Hill; Bestwick, Andrew J.; Harlow, Jennifer W.; Kuemmeth, Ferdinand; Marcos, David; Stwertka, Carolyn H.; Watson, Susan K.; Marcus, Charles Masamed (Nature Publishing Group, 2009)
      For coherent electron spins, hyperfine coupling to nuclei in the host material can either be a dominant source of unwanted spin decoherence or, if controlled effectively, a resource enabling storage and retrieval of quantum ...
    • Giant spin rotation under quasiparticle-photoelectron conversion: Joint effect of sublattice interference and spin-orbit coupling 

      Kuemmeth, Ferdinand; Rashba, Emmanuel (American Physical Society (APS), 2009)
      Spin- and angular-resolved photoemission spectroscopy is a basic experimental tool for unveiling spin polarization of electron eigenstates in crystals. We prove, by using spin-orbit coupled graphene as a model, that ...
    • Hole Spin Relaxation in Ge-Si Core-Shell Nanowire Qubits 

      Hu, Yongjie; Kuemmeth, Ferdinand; Lieber, Charles M.; Marcus, Charles Masamed (Nature Publishing Group, 2012)
      Controlling decoherence is the biggest challenge in efforts to develop quantum information hardware. Single electron spins in gallium arsenide are a leading candidate among implementations of solid-state quantum bits, but ...
    • Relaxation and Dephasing in a Two-Electron \(^{13}C\) Nanotube Double Quantum Dot 

      Churchill, Hugh Olen Hill; Kuemmeth, Ferdinand; Harlow, Jennifer W.; Bestwick, Andrew J.; Rashba, Emmanuel; Flensberg, Karsten; Stwertka, Carolyn H.; Taychatanapat, Thiti; Watson, Susan K.; Marcus, Charles Masamed (American Physical Society, 2009)
      We use charge sensing of Pauli blockade (including spin and isospin) in a two-electron \(^{13}C\) nanotube double quantum dot to measure relaxation and dephasing times. The relaxation time \(T_1\) first decreases with a ...
    • Spin-orbit effects in carbon-nanotube double quantum dots 

      Weiss, Sarah Avery; Rashba, Emmanuel; Kuemmeth, F; Churchill, H; Flensberg, K. (American Physical Society (APS), 2010)
      We study the energy spectrum of symmetric double quantum dots in narrow-gap carbon nanotubes with one and two electrostatically confined electrons in the presence of spin-orbit and Coulomb interactions. Compared to GaAs ...