Topologically protected qubits as minimal Josephson junction arrays with non-trivial boundary conditions: A proposal
نویسندگان
چکیده
منابع مشابه
Topologically protected quantum bits from Josephson junction arrays
All physical implementations of quantum bits (qubits), carrying the information and computation in a putative quantum computer, have to meet the conflicting requirements of environmental decoupling while remaining manipulable through designed external signals. Proposals based on quantum optics naturally emphasize the aspect of optimal isolation [1–3], while those following the solid state route...
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The boundary effects on the current-voltage characteristics in twodimensional arrays of resistively shunted Josephson junctions are examined. In particular, we consider both the conventional boundary conditions (CBC) and the fluctuating twist boundary conditions (FTBC), and make comparison of the obtained results. It is observed that the CBC, which have been widely adopted in existing simulatio...
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Given a complete non-compact surface Σ embedded in R, we consider the Dirichlet Laplacian in the layer Ω that is defined as a tubular neighbourhood of constant width about Σ. Using an intrinsic approach to the geometry of Ω, we generalise the spectral results of the original paper [1] by Duclos et al. to the situation when Σ does not possess poles. This enables us to consider topologically more...
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Since our previous article, " Quantum Computing with rf SQUIDs " , which appeared about four years ago in The Photon, we have made changes in our primary approach to the use of superconducting elements as qubits. Now we are focusing on single Josephson junctions as qubits, an idea that was suggested by members of our research group. 1 The qubit (quantum bit) of a quantum computer differs from t...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 2008
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2008.10.005