Flux Qubit in Charge-Phase Regime
arXiv:cond-mat/0311220 · doi:10.1103/PhysRevB.71.024504
Abstract
A superconducting qubit implementation is proposed that takes the advantage of both charge and phase degrees of freedom. Superpositions of flux states in a superconducting loop with three Josephson junctions form the states of the qubit. The charge degree of freedom is used to readout and couple the qubits. Cancellation of first order coupling to charge and flux fluctuations, at the working point of the qubit, protects it from the dephasing due to these sources.
4 pages, 5 figures, final version to appear in PRB
References in corpus (7)
- Coherent Quantum Dynamics of a Superconducting Flux Qubit
- Tunable coupling of superconducting qubits
- Coherent dynamics of a Josephson charge qubit
- Continuous Monitoring of Rabi Oscillations in a Josephson Flux Qubit
- Nondestructive readout for a superconducting flux qubit
- Low-frequency characterization of quantum tunneling in flux qubits
- Free Evolution of Superposition States in a Single Cooper Pair Box
Cited by in corpus (8)
- Spectroscopy of superconducting charge qubits coupled by a Josephson inductance
- Hybridized solid-state qubit in the charge-flux regime
- Full control of qubit rotations in a voltage-biased superconducting flux qubit
- Hamiltonian for coupled flux qubits
- Rabi Oscillations in Systems with Small Anharmonicity
- Nonpairwise interactions induced by virtual transitions in four coupled artificial atoms
- Quantum Nondemolition Charge Measurement of a Josephson Qubit
- Efficient steady state entanglement generation in strongly driven coupled qubits