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Circuit Quantum Electrodynamics with a Spin-Orbit Qubit
Published
Author(s)
Jacob M. Taylor, Karl Petersson, L. McFaul, M. Schroer, M. Jung, Andrew Houck, Jason Petta
Abstract
We develop a circuit quantum electrodynamics architecture for spin qubits by coupling an InAs double quantum dot to a high quality factor superconducting cavity. A charge trapped in the double quantum dot interacts with the electric field of the cavity, resulting in a large vacuum Rabi frequency of ~ 35 MHz. We drive single spin rotations using electric dipole spin resonance and demonstrate that photons trapped in the cavity are sensitive to single spin dynamics, allowing cavity readout of a spin qubit. The hybrid quantum system allows measurements of the spin lifetime and the observation of coherent spin rotations. Our results demonstrate that a spin-cavity coupling strength of 1 MHz is feasible, placing coherent coupling of spatially separated spin-qubits within reach of present technologies.
Taylor, J.
, Petersson, K.
, McFaul, L.
, Schroer, M.
, Jung, M.
, Houck, A.
and Petta, J.
(2012),
Circuit Quantum Electrodynamics with a Spin-Orbit Qubit, Nature, [online], https://doi.org/10.1038/nature11559
(Accessed October 1, 2025)