Exceptional entanglement phenomena: non-Hermiticity meeting
non-classicality
- URL: http://arxiv.org/abs/2210.04494v4
- Date: Sun, 31 Dec 2023 12:46:25 GMT
- Title: Exceptional entanglement phenomena: non-Hermiticity meeting
non-classicality
- Authors: Pei-Rong Han, Fan Wu, Xin-Jie Huang, Huai-Zhi Wu, Chang-Ling Zou, Wei
Yi, Mengzhen Zhang, Hekang Li, Kai Xu, Dongning Zheng, Heng Fan, Jianming
Wen, Zhen-Biao Yang, Shi-Biao Zheng
- Abstract summary: Non-Hermitian (NH) extension of quantum-mechanical Hamiltonians represents one of the most significant advancements in physics.
Here, we unveil distinct exceptional entanglement phenomena, exemplified by an entanglement transition, occurring at the exceptional point of NH interacting quantum systems.
Our results lay the foundation for studies of genuinely quantum-mechanical NH physics, signified by exceptional-point-enabled entanglement behaviors.
- Score: 11.121410238719466
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Non-Hermitian (NH) extension of quantum-mechanical Hamiltonians represents
one of the most significant advancements in physics. During the past two
decades, numerous captivating NH phenomena have been revealed and demonstrated,
but all of which can appear in both quantum and classical systems. This leads
to the fundamental question: what NH signature presents a radical departure
from classical physics? The solution of this problem is indispensable for
exploring genuine NH quantum mechanics, but remains experimentally untouched so
far. Here, we resolve this basic issue by unveiling distinct exceptional
entanglement phenomena, exemplified by an entanglement transition, occurring at
the exceptional point of NH interacting quantum systems. We illustrate and
demonstrate such purely quantum-mechanical NH effects with a naturally
dissipative light-matter system, engineered in a circuit quantum
electrodynamics architecture. Our results lay the foundation for studies of
genuinely quantum-mechanical NH physics, signified by exceptional-point-enabled
entanglement behaviors.
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