Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Chang, Shoukang"'
Parity-time (PT ) symmetric systems are gain-loss systems whose dynamics are governed by non-Hermitian Hamiltonians with degeneracies at exceptional-points (EPs) and has been studied in various photonic, electrical, mechanical systems, and so on. How
Externí odkaz:
http://arxiv.org/abs/2404.15942
Autor:
Ye, Wei, Xiao, Peng, Xu, Xiaofan, Zhu, Xiang, Yan, Yunbin, Wang, Lu, Ren, Jie, Zhu, Yuxuan, Xia, Ying, Rao, Xuan, Chang, Shoukang
In this work, we address the central problem about how to effectively find the available precision limit of unknown parameters. In the framework of the quantum Ziv-Zakai bound (QZZB), we employ noiseless linear amplification (NLA)techniques to an ini
Externí odkaz:
http://arxiv.org/abs/2404.14173
Autor:
Chang, Shoukang, Ye, Wei, Rao, Xuan, Zhang, Huan, Huang, Liqing, Luo, Mengmeng, Chen, Yuetao, Ma, Qiang, Gao, Shaoyan
Seeking the available precision limit of unknown parameters is a significant task in quantum parameter estimation. One often resorts to the widely utilized quantum Cramer-Rao bound (QCRB) based on unbiased estimators to finish this task. Nevertheless
Externí odkaz:
http://arxiv.org/abs/2309.04661
Autor:
Chang, Shoukang, Ye, Wei, Rao, Xuan, Zhang, Huan, Huang, Liqing, Luo, Mengmeng, Chen, Yuetao, Ma, Qiang, Gao, Shaoyan
Thermometry is a fundamental parameter estimation problem which is crucial in the development process of natural sciences. One way to solve this problem is to the extensive used local thermometry theory, which makes use of the classical and quantum C
Externí odkaz:
http://arxiv.org/abs/2305.08397
Autor:
Chang, Shoukang, Ye, Wei, Rao, Xuan, Zhang, Huan, Huang, Liqing, Luo, Mengmeng, Chen, Yuetao, Gao, Shaoyan
The angular displacement estimation is one of significant branches of quantum parameter estimation. However, most of the studies have focused on the single-angular displacement estimation, while the multiple angular displacement estimation in ideal a
Externí odkaz:
http://arxiv.org/abs/2210.16831
We propose a method to generate the multi-mode entangled catalysis squeezed vacuum states (MECSVS) by embedding the cross-Kerr nonlinear medium into the Mach-Zehnder interferometer. This method realizes the exchange of quantum states between differen
Externí odkaz:
http://arxiv.org/abs/2210.15381
Autor:
Chang, Shoukang, Ye, Wei, Rao, Xuan, Zhang, Huan, Luo, Mengmeng, Chen, Yuetao, Gao, Shaoyan, Hu, Liyun
In the highly non-Gaussian regime, the quantum Ziv-Zakai bound (QZZB) provides a lower bound on the available precision, demonstrating the better performance compared with the quantum Cram\'er-Rao bound. However, evaluating the impact of a noisy envi
Externí odkaz:
http://arxiv.org/abs/2203.11436
Autor:
Chang, Shoukang, Ye, Wei, Rao, Xuan, Zhang, Huan, Huang, Liqing, Luo, Mengmeng, Chen, Yuetao, Ma, Qiang, Yan, Yunbin, Wang, Lu, Gao, Shaoyan
Publikováno v:
In Results in Physics June 2024 61
We propose a theoretical scheme to enhance the phase sensitivity by introducing a Kerr nonlinear phase shift into the traditional SU(1,1) interferometer with a coherent state input and homodyne detection. We investigate the realistic effects of photo
Externí odkaz:
http://arxiv.org/abs/2103.07844
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