Strong coupling of spin qubits to a transmission line resonator

Details Strong coupling of spin qubits to a transmission line resonator Strong coupling of spin qubits to a transmission line resonator

2011-12-05

arxiv.org/abs/1112.0869v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures, submitted to PRL

Scientific paper

We propose a mechanism for coupling spin qubits formed in double quantum dots to a superconducting transmission line resonator. Coupling the resonator to the gate controlling the interdot tunneling creates a strong spin qubit--resonator interaction with strength of tens of MHz. This mechanism allows operating the system at a point of degeneracy where dephasing is minimized. The transmission line can serve as a shuttle allowing for two-qubit operations, including fast generation of qubit-qubit entanglement and the implementation of a controlled-phase gate.

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