报告题目: |
Quantum Measurement in Superconducting qubits |
报告人: |
Sahel Ashhab |
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Advanced Science Institute, RIKEN, Japan
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报告时间: |
2011-05-27 11:00 |
报告地点: |
信息楼（FIT） 4-402 |
主办单位: |
国家实验室 |
简介: |
报告摘要：
I will give a brief overview of measurement techniques in
superconducting qubits. I will then discuss the question of the
measurement information that one can learn about the state of a qubit,
i.e. a quantum two-level system, when probed weakly by a nearby
detector. In our study, we consider the general case where the qubit
Hamiltonian and the qubit's operator probed by the detector do not
commute. Because the qubit's state keeps evolving while being probed and
the measurement data is mixed with a detector-related background noise,
one might expect the detector to fail in this case. We show, however,
that under suitable conditions and by proper analysis of the measurement
data useful information about the state of the qubit can be extracted.
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