Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Chu, Yaoming"'
The comprehension of quantum phase transitions (QPTs) is considered as a critical foothold in the field of many-body physics. Developing protocols to effectively identify and understand QPTs thus represents a key but challenging task for present quan
Externí odkaz:
http://arxiv.org/abs/2408.09783
Entanglement, a hallmark of quantum mechanics, is a vital resource for quantum technologies. Generating highly entangled multipartite states is a key goal in current quantum experiments. We unveil a novel framework for understanding entanglement gene
Externí odkaz:
http://arxiv.org/abs/2404.10973
Open systems possess unique potentials in high-precision sensing, yet the majority of previous studies rely on the spectral singularities known as exceptional points. Here we theoretically propose and experimentally demonstrate universal non-Hermitia
Externí odkaz:
http://arxiv.org/abs/2403.08218
Autor:
Gong, Musang, Yu, Min, Chu, Yaoming, Chen, Wei, Cao, Qingyun, Wang, Ning, Cai, Jianming, Betzholz, Ralf, Giannelli, Luigi
Publikováno v:
Physical Review A 109, 032626 (2024)
Reaching a given target quantum state with high fidelity and fast operation speed close to the quantum limit represents an important goal in quantum information science. Here, we experimentally demonstrate superadiabatic quantum driving to achieve po
Externí odkaz:
http://arxiv.org/abs/2307.01675
Publikováno v:
Phys. Rev. Lett. 132, 073202 (2024)
The electric dipole moment (EDM) plays a crucial role in determining the interaction strength of an atom with electric fields, making it paramount to quantum technologies based on coherent atomic control. We propose a scheme for engineering the poten
Externí odkaz:
http://arxiv.org/abs/2304.10735
Autor:
Gong, Musang, Yu, Min, Betzholz, Ralf, Chu, Yaoming, Yang, Pengcheng, Wang, Zhenyu, Cai, Jianming
In a solid-state spin system, we experimentally demonstrate a protocol for quantum-state population transfer with an improved efficiency compared to traditional stimulated Raman adiabatic passage (STIRAP). Using the ground-state triplet of the nitrog
Externí odkaz:
http://arxiv.org/abs/2304.10672
Publikováno v:
Phys. Rev. Lett. 130, 170801 (2023)
Surpassing the standard quantum limit and even reaching the Heisenberg limit using quantum entanglement, represents the Holy Grail of quantum metrology. However, quantum entanglement is a valuable resource that does not come without a price. The exce
Externí odkaz:
http://arxiv.org/abs/2301.12113
Autor:
Chu, Yaoming, Cai, Jianming
Recently, we find a physical limit on energy consumption of quantum metrology, and demonstrate that it essentially arises from the erasure of quantum Fisher information (QFI) which determines the best achievable measurement precision. Here, we provid
Externí odkaz:
http://arxiv.org/abs/2208.05167
Autor:
Yu, Min, Li, Xiangbei, Chu, Yaoming, Mera, Bruno, Ünal, F. Nur, Yang, Pengcheng, Liu, Yu, Goldman, Nathan, Cai, Jianming
Publikováno v:
National Science Review, nwae065 (2024)
Quantum metrology is deeply connected to quantum geometry, through the fundamental notion of quantum Fisher information. Inspired by advances in topological matter, it was recently suggested that the Berry curvature and Chern numbers of band structur
Externí odkaz:
http://arxiv.org/abs/2206.00546
Autor:
Chu, Yaoming, Cai, Jianming
Publikováno v:
Phys. Rev. Lett.128.200501 (2022)
The heat dissipation in quantum metrology represents not only an unavoidable problem towards practical applications of quantum sensing devices but also a fundamental relationship between thermodynamics and quantum metrology. However, a general thermo
Externí odkaz:
http://arxiv.org/abs/2203.05688