| An Estimate of Quantum Evolution Speed |
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| Shuangshuang Fu. An Estimate of Quantum Evolution Speed. International Journal of Software and Informatics, 2014,8(3-4):299~307 |
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| Abstract:The evolution speed of unitary quantum dynamics plays an important role in assessing the maximal speed of quantum computation, quantum information processing, and communication. Here we evaluate the minimal evolution time for a state to decay by a certain amount 2, which is a generalization of the minimum orthogonalization time, and present an improved lower bound expressed in terms of the energy characteristics. We also reveal an intrinsic quantum speed limit for any Hamiltonian. |
| keywords:quantum dynamics evolution speed limit time-energy uncertainty moments |
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