تقرير
Experimental demonstration of spontaneous symmetry breaking with emergent multi-qubit entanglement
| العنوان: | Experimental demonstration of spontaneous symmetry breaking with emergent multi-qubit entanglement |
|---|---|
| المؤلفون: | Zheng, Ri-Hua, Ning, Wen, Lü, Jia-Hao, Yu, Xue-Jia, Wu, Fang, Deng, Cheng-Lin, Yang, Zhen-Biao, Xu, Kai, Zheng, Dongning, Fan, Heng, Zheng, Shi-Biao |
| سنة النشر: | 2024 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Spontaneous symmetry breaking (SSB) is crucial to the occurrence of phase transitions. Once a phase transition occurs, a quantum system presents degenerate eigenstates that lack the symmetry of the Hamiltonian. After crossing the critical point, the system is essentially evolved to a quantum superposition of these eigenstates until decoherence sets in. Despite the fundamental importance and potential applications in quantum technologies, such quantum-mechanical SSB phenomena have not been experimentally explored in many-body systems. We here present an experimental demonstration of the SSB process in the Lipkin-Meshkov-Glick model, governed by the competition between the individual driving and intra-qubit interaction. The model is realized in a circuit quantum electrodynamics system, where 6 Xmon qubits are coupled in an all-to-all manner through virtual photon exchange mediated by a resonator. The observed nonclassical correlations among these qubits in the symmetry-breaking region go beyond the conventional description of SSB, shedding new light on phase transitions for quantum many-body systems. Comment: 27 pages, 18 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2407.12567 |
| رقم الأكسشن: | edsarx.2407.12567 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |