Scalable quantum computing with Josephson charge qubits

Details Scalable quantum computing with Josephson charge qubits Scalable quantum computing with Josephson charge qubits

2003-06-09

arxiv.org/abs/cond-mat/0306209v1

Phys. Rev. Lett. 89, 197902 (2002)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.89.197902

A goal of quantum information technology is to control the quantum state of a system, including its preparation, manipulation, and measurement. However, scalability to many qubits and controlled connectivity between any selected qubits are two of the major stumbling blocks to achieve quantum computing (QC). Here we propose an experimental method, using Josephson charge qubits, to efficiently solve these two central problems. The proposed QC architecture is scalable since any two charge qubits can be effectively coupled by an experimentally accessible inductance. More importantly, we formulate an efficient and realizable QC scheme that requires only one (instead of two or more) two-bit operation to implement conditional gates.

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