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Fei-Yun Zhu

Publications and source records attributed to Fei-Yun Zhu.

2 recordsLinked to original sources
arXiv2009

Generation of quantum-dot cluster states with superconducting transmission line resonator

We propose an efficient method to generate cluster states in spatially separated double quantum dots with a superconducting transmission line resonator (TLR). When the detuning between the double-dot qubits transition frequency and the frequency of the full wave mode in the TLR satisfies some conditions, an Ising-like operator between arbitrary two separated qubits can be achieved. Even including the main noise sources, it's shown that the high fidelity cluster states could be generated in this solid system in just one step.

quant-ph↗
arXiv2009

Effect of Quantum Point Contact Measurement on Electron Spin State in Quantum Dot

We study the time evolution of two electron spin states in a double quantum-dot system, which includes a nearby quantum point contact (QPC) as a measurement device. We obtain that the QPC measurement induced decoherence is in time scales of microsecond. We also find that the enhanced QPC measurement will trap the system in its initial spin states, which is consistent with quantum Zeno effect.

quant-ph↗