Transcription of Superconducting Qubits: A Short Review
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SuperconductingQubits:A , y, andJ. yDepartment of AppliedPhysics,YaleUniversity, NewHaven,CT06520 Department of Physics,University of California,Santa Barbara,CA93106 October 11, theJosephsontunneljunction,theonlynon-di ssipative, stronglynon-linearcircuitelement availableat low as spinsor atoms,theytendto be wellcoupledto othercircuits,which make themappeallingfromthepoint of , newdesignsof supercon-ductingqubitsbasedonmulti-junct ioncircuitshave solvedtheproblemof thisreviewhow qubitdecoherenceis a ectedby theintrinsicnoiseof thejunctionandwhatcanbe doneto improve implementinga quantumcomputer..32 Basicfeaturesof dissipation:superconductivity .. noise:low temperature.. ,non-dissipative elements:tunneljunctions.
readout and gate implementation. Veryrecently, new designs of supercon-ducting qubits based on multi-junction circuits have solved the problem of isolation from unwanted extrinsic electromagnetic perturbations. We discuss in this review how qubit decoherence is a ected by the intrinsic noise of the junction and what can be done to improve it ...
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