Superconducting quantum bits

John Clarke and Frank K. Wilhelm
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John Clarke: University of California
Frank K. Wilhelm: Institute for Quantum Computing, University of Waterloo, 200 University Avenue West

Nature, 2008, vol. 453, issue 7198, 1031-1042

Abstract: Abstract Superconducting circuits are macroscopic in size but have generic quantum properties such as quantized energy levels, superposition of states, and entanglement, all of which are more commonly associated with atoms. Superconducting quantum bits (qubits) form the key component of these circuits. Their quantum state is manipulated by using electromagnetic pulses to control the magnetic flux, the electric charge or the phase difference across a Josephson junction (a device with nonlinear inductance and no energy dissipation). As such, superconducting qubits are not only of considerable fundamental interest but also might ultimately form the primitive building blocks of quantum computers.

Date: 2008
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DOI: 10.1038/nature07128

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