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Measurement of Spin Singlet-Triplet Qubit in Quantum Dots Using Superconducting Resonator |
Xing-Yu Zhu, Tao Tu**, Ao-Lin Guo, Zong-Quan Zhou, Guang-Can Guo |
Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026
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Cite this article: |
Xing-Yu Zhu, Tao Tu, Ao-Lin Guo et al 2020 Chin. Phys. Lett. 37 020302 |
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Abstract The spin qubit in quantum dots is one of the leading platforms for quantum computation. A crucial requirement for scalable quantum information processing is the high efficient measurement. Here we analyze the measurement process of a quantum-dot spin qubit coupled to a superconducting transmission line resonator. Especially, the phase shift of the resonator is sensitive to the spin states and the gate operations. The response of the resonator can be used to measure the spin qubit efficiently, which can be extend to read out the multiple spin qubits in a scalable solid-state quantum processor.
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Received: 10 December 2019
Published: 18 January 2020
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PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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42.50.Dv
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(Quantum state engineering and measurements)
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42.50.Pq
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(Cavity quantum electrodynamics; micromasers)
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Fund: Supported by the National Basic Research Programme of China (No. 2017YFA0304100), and the National Natural Science Foundation of China (No. 11974336). |
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