Low-bandwidth control scheme for an oscillator stabilized Josephson qubit
arXiv:cond-mat/0411380 · doi:10.1103/PhysRevB.72.092512
Abstract
We introduce a new Josephson junction circuit for which quantum operations are realized by low-bandwidth, nearly adiabatic magnetic-flux pulses. Coupling to the fundamental mode of a superconducting transmission line permits a stabilization of the rotation angle of the quantum operation against flux noise. A complete scheme for one-qubit rotations, and high-visibility Ramsey-fringe oscillations, is given. We show that high visibility depends on passing through a portal in the space of applied fluxes, where the width of the portal is proportional to the ramp-up rate of the flux pulse.
arXiv comment5 pages, pdflatex
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- Circuit QED and engineering charge based superconducting qubits
- Fault tolerant architectures for superconducting qubits
- High-Fidelity Single-Qubit Gates for Two-Electron Spin Qubits in GaAs
- Coherent oscillations in a superconducting tunable flux qubit manipulated without microwaves
- Kerr nonlinearities and nonclassical states with superconducting qubits and nanomechanical resonators
- Efficient evaluation of decoherence rates in complex Josephson circuits
- Efficient one- and two-qubit pulsed gates for an oscillator stabilized Josephson qubit
- Investigation of resonant and transient phenomena in Josephson junction flux qubits
- Simulating Ramsey-Type Fringes in a Pulsed Microwave-Driven Classical Josephson Junction
- Classical analogs for Rabi-oscillations, Ramsey-fringes, and spin-echo in Josephson junctions
- Quantum computation and hidden variables