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arXiv 0804.3130physics.optics
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作为量子物体的光孤子

Optical solitons as quantum objects

Y. Pomeau, M. Le Berre

摘要:

在线性耦合的全同光纤中传输的经典亮孤子,在强耦合时其强度分布可以是稳定的对称态,在耦合足够小的情况下,其强度分布可以是稳定的非对称态。在第一种情况下,如果初始状态不是平衡态,则强度可以周期性地从光纤切换到光纤,而在第二种情况下,非对称状态永远保持,其大部分能量在任一光纤中。后一种情况使得传播状态具有两个完全相反的实现。在量子情况下,由于两个光纤之间的量子隧穿,这种情况不作为本征态存在。这种隧穿是一种纯粹的量子现象,在经典理论中并不存在。我们估计隧道的速度量化的简化动力学来自原始拉格朗日方程的测试功能。这种隧穿可能在实验的范围内,特别是如果孤子的量子相干性可以保持足够长的时间。

英文摘要:

The intensity of classical bright solitons propagating in linearly coupled identical fibers can be distributed either in a stable symmetric state at strong coupling or in a stable asymmetric state if the coupling is small enough. In the first case, if the initial state is not the equilibrium state, the intensity may switch periodically from fiber to fiber, while in the second case the a-symmetrical state remains forever, with most of its energy in either fiber. The latter situation makes a state of propagation with two exactly reciprocal realizations. In the quantum case, such a situation does not exist as an eigenstate because of the quantum tunneling between the two fibers. Such a tunneling is a purely quantum phenomenon which does not not exist in the classical theory. We estimate the rate of tunneling by quantizing a simplified dynamics derived from the original Lagrangian equations with test functions. This tunneling could be within reach of the experiments, particularly if the quantum coherence of the soliton can be maintained over a sufficient amount of time.

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。

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