Hybrid quantum circuit with a superconducting qubit coupled to a spin ensemble.
نویسندگان
چکیده
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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Ze-Liang Xiang,1,2 Xin-You Lü,2 Tie-Fu Li,3,4 J. Q. You,1,2,4 and Franco Nori2,5 1Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China 2Advanced Science Institute, RIKEN, Saitama 351-0198, Japan 3Institute of Microelectronics and Tsinghua National Laboratory of Information Science and Technology, Tsinghua University, Beijing 100084, China 4...
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ورودعنوان ژورنال:
- Physical review letters
دوره 107 22 شماره
صفحات -
تاریخ انتشار 2011