Effect of the measurement on the decay rate of a quantum system
英文摘要：
We investigated the electron tunneling out of a quantum dot in the presence of a continuous monitoring by a detector. It is shown that the Schrödinger equation for the whole system can be reduced to new Bloch-type rate equations describing the time-development of the detector and the measured system at once. Using these equations we find that the continuous measurement of the unstable system does not affect its exponential decay, $\exp (-Γt)$, contrary to expectations based on the Quantum Zeno effect . However, the width of the energy distribution of the tunneling electron is no more $Γ$, but increases due to the decoherence, generated by the detector.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
