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Journal Article

Initialisation of single spin dressed states using shortcuts to adiabaticity


Ribeiro,  Hugo
Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Kölbl, J., Barfuss, A., Kasperczyk, M., Thiel, L., Clerk, A., Ribeiro, H., et al. (2019). Initialisation of single spin dressed states using shortcuts to adiabaticity. Physical Review Letters, 122(9): 090502. doi:10.1103/PhysRevLett.122.090502.

Cite as: https://hdl.handle.net/21.11116/0000-0002-E687-2
We demonstrate the use of shortcuts to adiabaticity protocols for initialisation, readout, and coherent control of dressed states generated by closed-contour, coherent driving of a single spin. Such dressed states have recently been shown to exhibit efficient coherence protection, beyond what their two-level counterparts can offer. Our state transfer protocols yield a transfer fidelity of ~ 99.4(2) % while accelerating the transfer speed by a factor of 2.6 compared to the adiabatic approach. We show bi-directionality of the accelerated state transfer, which we employ for direct dressed state population readout after coherent manipulation in the dressed state manifold. Our results enable direct and efficient access to coherence-protected dressed states of individual spins and thereby offer attractive avenues for applications in quantum information processing or quantum sensing.