



@article {2148,
	title = {A coherent spin{\textendash}photon interface in silicon},
	journal = {Nature},
	year = {2018},
	month = {2018/02/14},
	abstract = {<p><span style="color: rgb(34, 34, 34); font-family: Lora, Palatino, Times, \&quot;Times New Roman\&quot;, serif; font-size: 17px; letter-spacing: 0.17px;">Electron spins in silicon quantum dots are attractive systems for quantum computing owing to their long coherence times and the promise of rapid scaling of the number of dots in a system using semiconductor fabrication techniques. Although nearest-neighbour exchange coupling of two spins has been demonstrated, the interaction of spins via microwave-frequency photons could enable long-distance spin\&ndash;spin coupling and connections between arbitrary pairs of qubits (\&lsquo;all-to-all\&rsquo; connectivity) in a spin-based quantum processor. Realizing coherent spin\&ndash;photon coupling is challenging because of the small magnetic-dipole moment of a single spin, which limits magnetic-dipole coupling rates to less than 1 kilohertz. Here we demonstrate strong coupling between a single spin in silicon and a single microwave-frequency photon, with spin\&ndash;photon coupling rates of more than 10 megahertz. The mechanism that enables the coherent spin\&ndash;photon interactions is based on spin\&ndash;charge hybridization in the presence of a magnetic-field gradient. In addition to spin\&ndash;photon coupling, we demonstrate coherent control and dispersive readout of a single spin. These results open up a direct path to entangling single spins using microwave-frequency photons.</span></p>},
	doi = {10.1038/nature25769},
	url = {https://www.nature.com/articles/nature25769$\#$author-information},
	author = {X. Mi and M. Benito and S. Putz and D. M. Zajac and J. M. Taylor and Guido Burkard and J. R. Petta}
}
