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- 摘要
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Long-distance entangling gates between quantum dot spins mediated by a superconducting resonator
摘要： Recent experiments with silicon qubits demonstrated strong coupling of a microwave resonator to the spin of a single electron in a double quantum dot, opening up the possibility of long-range spin-spin interactions. We present our theoretical calculation of effective interactions between distant quantum dot spins coupled by a resonator, and propose a protocol for fast, high-fidelity two-qubit gates consistent with experimentally demonstrated capabilities. Our simulations show that, in the presence of noise, spin-spin entangling gates significantly outperform cavity-mediated gates on charge qubits.
关键词： superconducting resonator,entangling gates,quantum dot spins,quantum information processing
更新于2025-09-19 17:13:59
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Measurement of Spin Singlet-Triplet Qubit in Quantum Dots Using Superconducting Resonator <sup>*</sup>
摘要： 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.
关键词： quantum dots,quantum computation,superconducting resonator,spin qubit
更新于2025-09-19 17:13:59