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arXiv quant-ph/0606159quant-ph
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耦合腔阵列中光子阻塞引起的Mott跃迁和XY自旋模型

Photon blockade induced Mott transitions and XY spin models in coupled cavity arrays

Dimitris G. Angelakis, Marcelo F. Santos, Sougato Bose

摘要:

由于光子彼此之间不相互作用,因此有趣的是,光子系统是否可以被修改以呈现强耦合多体系统的相位特性。我们演示了如何莫特绝缘体类型的相位的激发可以出现在一个阵列的耦合电磁腔,其中每个谐振耦合到一个{ \em单}两级系统(原子/量子点/库珀对),并可以单独从外面解决。在莫特相位中,每个原子-腔系统具有相同整数的净极化激元(原子加光子)激发,光子阻断提供每个位点中的激发之间所需的排斥。失谐的原子和光子的频率抑制这种效应,并诱导过渡到光子超流体。我们还表明,零失谐,该系统可以模拟许多体自旋系统的动力学。

英文摘要:

As photons do not interact with each other, it is interesting to ask whether photonic systems can be modified to exhibit the phases characteristic of strongly coupled many-body systems. We demonstrate how a Mott insulator type of phase of excitations can arise in an array of coupled electromagnetic cavities, each of which is coupled resonantly to a {\em single} two level system (atom/quantum dot/Cooper pair) and can be individually addressed from outside. In the Mott phase each atom-cavity system has the same integral number of net polaritonic (atomic plus photonic) excitations with photon blockade providing the required repulsion between the excitations in each site. Detuning the atomic and photonic frequencies suppresses this effect and induces a transition to a photonic superfluid. We also show that for zero detuning, the system can simulate the dynamics of many body spin systems.

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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