Hybrid quantum circuit with a superconducting qubit coupled to a spin ensemble.
Phys Rev Lett
; 107(22): 220501, 2011 Nov 25.
Article
em En
| MEDLINE
| ID: mdl-22182018
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 centers in a diamond crystal via a frequency-tunable superconducting resonator acting as a quantum bus. Using this circuit, we prepare a superposition of the qubit states that we store into collective excitations of the spin ensemble and retrieve back into the qubit later on. These results constitute a proof of concept of spin-ensemble based quantum memory for superconducting qubits.
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MEDLINE
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En
Ano de publicação:
2011
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Article