Regensburg 2013 – wissenschaftliches Programm
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SYSC: Symposium Strong Coupling in Solid State Quantum Systems
SYSC 1: Strong Coupling in Solid State Quantum Systems (SYSC)
SYSC 1.2: Hauptvortrag
Dienstag, 12. März 2013, 10:00–10:30, H1
Hybrid Quantum Circuit with a Superconducting Qubit Coupled to an Electron Spin Ensemble — •Yuimaru Kubo1, Cecile Grezes1, Igor Diniz2, Jun-ichi Isoya3, Vincent Jacques4, Anais Dreau4, Jean-François Roch4, Alexia Auffeves2, Denis Vion1, Daniel Esteve1, and Patrice Bertet1 — 1Quantronics Group, SPEC (CNRS URA 2464), CEA-Saclay, 91191 Gif-sur-Yvette, France — 2Institut Néel, CNRS, BP 166, 38042 Grenoble, France — 3Research Center for Knowledge Communities, University of Tsukuba, 305-8550 Tsukuba, Japan — 4LPQM (CNRS, UMR 8537), Ecole Normale Supérieure de Cachan, 94235 Cachan, France
We report the experimental realization of a hybrid quantum circuit combining a superconducting qubit and an ensemble of electronic spins. The qubit, of the transmon type, is coherently coupled to the spin ensemble consisting of nitrogen-vacancy (NV) centers in a diamond crystal via a frequency-tunable superconducting resonator acting as a quantum bus [1,2].
Using this circuit, we prepare arbitrary superpositions of the qubit states that we store into collective excitations of the spin ensemble and retrieve back into the qubit[3].
We also report a new method for detecting the magnetic resonance of electronic spins at low temperature with a qubit using the hybrid quantum circuit [4], as well as our recent progress on spin echo experiments.
[1] Y. Kubo et al., Phys. Rev. Lett. 105, 140502 (2010)
Y. Kubo et al., Phys. Rev. A 85, 012333 (2012)
Y. Kubo et al., Phys. Rev. Lett. 107, 220501 (2011)
Y. Kubo et al., Phys. Rev. B 86, 064514 (2012)