论文标题
具有两个相互作用量子位的可集成量子狂犬病模型的量子相变
Quantum phase transitions for an integrable quantum Rabi-like model with two interacting qubits
论文作者
论文摘要
研究了一个两种相互作用的量子rabi样模型，并研究了Qubit Pair上消失的横向场。该模型独立于耦合方案，可以精确，单位降低到两个独立的单旋量子兔模型，其中自旋旋转耦合起着横向场的作用。这种转换和单旋量子兔模型的分析处理为证明我们模型的整合性提供了关键。揭示了不同的一阶量子相变的存在，其特征是不连续的两旋磁化，平均光子数和同意。
A two-interacting-qubit quantum Rabi-like model with vanishing transverse fields on the qubit-pair is studied. Independently of the coupling regime, this model can be exactly and unitarily reduced to two independent single-spin quantum Rabi models, where the spin-spin coupling plays the role of the transverse field. This transformation and the analytical treatment of the single-spin quantum Rabi model provide the key to prove the integrability of our model. The existence of different first-order quantum phase transitions, characterized by discontinuous two-spin magnetization, mean photon number and concurrence, is brought to light.
