Now showing items 1-3 of 3

    • Driven Nonlinear Dynamics of Two Coupled Exchange-Only Qubits 

      Pal, Arijeet; Rashba, Emmanuel; Halperin, Bertrand I. (American Physical Society (APS), 2014)
      Inspired by the creation of a fast exchange-only qubit [Medford et al., Phys. Rev. Lett. 111, 050501 (2013)], we develop a theory describing the nonlinear dynamics of two such qubits that are capacitively coupled, when one ...
    • Exact CNOT gates with a single nonlocal rotation for quantum-dot qubits 

      Pal, Arijeet; Rashba, Emmanuel; Halperin, Bertrand I. (American Physical Society (APS), 2015)
      We investigate capacitively-coupled exchange-only two-qubit quantum gates based on quantum dots. For exchange-only coded qubits electron spin S and its projection Sz are exact quantum numbers. Capacitive coupling between ...
    • Quenching of dynamic nuclear polarization by spin–orbit coupling in GaAs quantum dots 

      Nichol, John M.; Harvey, Shannon P.; Shulman, Michael D.; Pal, Arijeet; Umansky, Vladimir; Rashba, Emmanuel I.; Halperin, Bertrand I.; Yacoby, Amir (Nature Pub. Group, 2015)
      The central-spin problem is a widely studied model of quantum decoherence. Dynamic nuclear polarization occurs in central-spin systems when electronic angular momentum is transferred to nuclear spins and is exploited in ...