Dissipation-induced dynamical phase transition in postselected quantum trajectories

被引：4
|
作者：
Hayata, Tomoya [1 ]
Hidaka, Yoshimasa [2 ,3 ,4 ]
Yamamoto, Arata [5 ]
机构：
[1] Keio Univ, Dept Phys, 4-1-1 Hiyoshi, Keio 2238521, Japan
[2] KEK Theory Ctr, Tsukuba, Ibaraki 3050801, Japan
[3] Grad Univ Adv Studies Sokendai, Tsukuba, Ibaraki 3050801, Japan
[4] RIKEN, RIKEN iTHEMS, Wako, Saitama 3510198, Japan
[5] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
来源：
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2023年 / 2023卷 / 02期
关键词：
D O I：
10.1093/ptep/ptad007
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
It is known that effects of dissipation or measurement backreaction in postselected quantum trajectories are described by a non-Hermitian Hamiltonian, but their consequences in real-time dynamics of many-body systems are yet to be elucidated. Through a study of a non-Hermitian Hubbard model, we reveal a novel dissipation-induced dynamical phase transition in postselected quantum trajectories, where time controls the strength of postselection and becomes the intrinsic parameter inducing the phase transition. Our findings are testable in ultracold atom experiments and may open a new avenue in the dissipative engineering of quantum systems.
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页数：10
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