Toroidal qubits: naturally-decoupled quiet artificial atoms

Abstract

The requirements of quantum computations impose high demands on the level of qubit protection from perturbations; in particular, from those produced by the environment. Here we propose a superconducting flux qubit design that is naturally protected from ambient noise. This decoupling is due to the qubit interacting with the electromagnetic field only through its toroidal moment, which provides an unusual qubit-field interaction.

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Cited by in corpus (8)

• Microwave photonics with superconducting quantum circuits
• Extremely High Q-factor metamaterials due to Anapole Excitation
• Observation of Toroidal Pulses of Light
• Toroidal eigenmodes in all-dielectric metamolecules
• Toroidal optical transitions in hydrogen-like atoms
• The eigenvalues and eigenfunctions of the toroidal dipole operator in a mesoscopic system
• Broad-Band Negative Refraction via Simultaneous Multi-Electron Transitions
• Current biased gradiometric flux qubit in a circuit-QED architecture