NMR Quantum Simulation of Localization Effects Induced by Decoherence
NMR Quantum Simulation of Localization Effects Induced by Decoherence
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DOI：
10.1103/physrevlett.104.230403
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发表时间：
2010-06-09
影响因子：
8.6
通讯作者：
Suter, Dieter
中科院分区：
文献类型：
--
作者：
Alvarez, Gonzalo A.;Suter, Dieter
量子力学叠加态中相干性的丧失限制了量子信息保持有用的时间。同样，它限制了量子信息可以传输的距离。在这里，我们调查在一个核自旋为基础的量子模拟器中，由驱动信息传输的哈密顿量产生的自旋团簇的大小的本地化，而一个可变强度的微扰抵消扩散。我们发现，系统达到一个动态平衡的大小，这与扰动强度的平方减少。
The loss of coherence in quantum mechanical superposition states limits the time for which quantum information remains useful. Similarly, it limits the distance over which quantum information can be transmitted. Here, we investigate in a nuclear spin-based quantum simulator, the localization of the size of spin clusters that are generated by a Hamiltonian driving the transmission of information, while a variable-strength perturbation counteracts the spreading. We find that the system reaches a dynamic equilibrium size, which decreases with the square of the perturbation strength.