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Toroidal qubits: naturally-decoupled quiet artificial atoms

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arxiv 1406.7678 v2 pith:LZRNTRHQ submitted 2014-06-30 quant-ph cond-mat.mes-hallcond-mat.supr-con

Toroidal qubits: naturally-decoupled quiet artificial atoms

classification quant-ph cond-mat.mes-hallcond-mat.supr-con
keywords qubittoroidalambientartificialatomscomputationsdecouplingdemands
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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