Decoherence

Amit Hagar

Eugen Merzbacher

Introducing Decoherence.- The Basic Formalism and Interpretation of Decoherence.- Decoherence Is Everywhere: Localization Due to Environmental Scattering.- Master-Equation Formulations of Decoherence.- A World of Spins and Oscillators: Canonical Models for Decoherence.- Of Buckey Balls and SQUIDs: Observing Decoherence in Action.- Decoherence and Quantum Computing.- The Role of Decoherence in Interpretations of Quantum Mechanics.- Observations, the Quantum Brain, and Decoherence.

Jie Jie, Yang, Shuang +1 more

我们基于 decoherence 免费的目标状态为州的转移建议一条基于 Lyapunov 的控制途径。期望的目标状态被构造由一块外部激光地是在 decoherence 免费的 subspace (DFS ) 的一个 decoherence 免费的状态我以便系统状态能是从环境，和没有更多的 decoherence 过程的 decoupled 将发生。与 decoherence 免费的目标状态，我们设计基于 Lyapunov 的控制域尽可能完全驾驶给定的起始的状态到开的量系统的 decoherence 免费的状态的 II，和 decouple 从环境的系统状态同时。最后，设计的州的转移控制在一种类型上实现，这被验证没有联合到环境，四水平的原子系统，和系统能在 decoherence 免费的目标状态上留下来。

Miguel Orszag

Duan Lu-ming, Guo Guang-Can

An efficient decoherence-reducing strategy exists if two qubits can be made decohered collectively. This paper serves to derive the explicit conditions for collective decoherence from a practical decoherence model. We describe two kinds of collective decoherence. In each case, a corresponding decoherence-reducing strategy is proposed.