Zobrazeno 1 - 10
of 272
pro vyhledávání: '"Liu, Yong-Chun"'
Autor:
Tang, Yuanjiang, Wang, Chenyang, Liu, Bei, Peng, Jin, Liang, Chao, Li, Yaohua, Zhao, Xian, Lu, Cuicui, Zhang, Shuang, Liu, Yong-Chun
Spontaneous symmetry breaking plays a pivotal role in physics ranging from the emergence of elementary particles to the phase transitions of matter. The spontaneous breaking of continuous time translation symmetry leads to a novel state of matter nam
Externí odkaz:
http://arxiv.org/abs/2407.07697
Publikováno v:
Phys. Rev. Lett. 132, 113402 (2024)
The Greenberger-Horne-Zeilinger (GHZ) state is a key resource for quantum information processing and quantum metrology. The atomic GHZ state can be generated by one-axis twisting (OAT) interaction $H_{\mathrm{OAT}}=\chi J_{z}^{2}$ with $\chi $ the in
Externí odkaz:
http://arxiv.org/abs/2311.04560
We study the mechanism for realizing non-Hermitian skin effect (NHSE) via dissipative couplings, in which the left-right couplings have equal strengths but the phases do not satisfy the complex conjugation. Previous realizations of NHSE typically req
Externí odkaz:
http://arxiv.org/abs/2311.03803
Time crystal is a class of non-equilibrium phases with broken time-translational symmetry. Here we demonstrate the time crystal in a single-mode nonlinear cavity. The time crystal originates from the self-oscillation induced by a linear gain and is s
Externí odkaz:
http://arxiv.org/abs/2310.05854
Autor:
Li, Yaohua, Liu, Yong-Chun
Quantum entanglement and classical topology are two distinct phenomena that are difficult to be connected together. Here we discover that an open bosonic quadratic chain exhibits topology-induced entanglement effect. When the system is in the topolog
Externí odkaz:
http://arxiv.org/abs/2309.07017
Atomic nonlinear interferometry has wide applications in quantum metrology and quantum information science. Here we propose a nonlinear time-reversal interferometry scheme with high robustness and metrological gain based on the spin squeezing generat
Externí odkaz:
http://arxiv.org/abs/2308.04042
Non-Hermitian topological systems have attracted lots of interest due to their unique topological properties when the non-Hermitian skin effect (NHSE) appears. However, the experimental realization of NHSE conventionally requires non-reciprocal coupl
Externí odkaz:
http://arxiv.org/abs/2306.04460
Spin squeezing is vitally important in quantum metrology and quantum information science. The noise reduction resulting from spin squeezing can surpass the standard quantum limit and even reach the Heisenberg Limit (HL) in some special circumstances.
Externí odkaz:
http://arxiv.org/abs/2306.04156
Narrow linewidth is a long-pursuing goal in precision measurement and sensing. We propose a parity-time (PT )-symmetric feedback method to narrow the linewidths of resonance systems. By using a quadrature measurement-feedback loop, we transform a dis
Externí odkaz:
http://arxiv.org/abs/2304.07475
Exceptional points (EPs) in non-Hermitian systems have recently attracted wide interests and spawned intriguing prospects for enhanced sensing. However, EPs have not yet been realized in thermal atomic ensembles, which is one of the most important pl
Externí odkaz:
http://arxiv.org/abs/2304.06985