News Item
Multidisciplinary Sciences
Davide Castelvecchi, Elizabeth Gibney
Summary: This article discusses the recognition received by three experimental physicists for their pioneering research that has formed the foundation for quantum information science.
Article
Physics, Multidisciplinary
Xin Wang, Tao Liu, Anton Frisk Kockum, Hong-Rong Li, Franco Nori
Summary: This proposal presents tunable chiral bound states in a system consisting of superconducting giant atoms and a Josephson photonic-crystal waveguide, offering potential applications in experiments for realizing topological phase transitions and quantum simulations using superconducting circuits.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
Sirui Cao, Bujiao Wu, Fusheng Chen, Ming Gong, Yulin Wu, Yangsen Ye, Chen Zha, Haoran Qian, Chong Ying, Shaojun Guo, Qingling Zhu, He-Liang Huang, Youwei Zhao, Shaowei Li, Shiyu Wang, Jiale Yu, Daojin Fan, Dachao Wu, Hong Su, Hui Deng, Hao Rong, Yuan Li, Kaili Zhang, Tung-Hsun Chung, Futian Liang, Jin Lin, Yu Xu, Lihua Sun, Cheng Guo, Na Li, Yong-Heng Huo, Cheng-Zhi Peng, Chao-Yang Lu, Xiao Yuan, Xiaobo Zhu, Jian-Wei Pan
Summary: Scalable generation of genuine multipartite entanglement on a large-scale quantum device is demonstrated. High-fidelity parallel quantum gates are used to prepare and verify intermediate-scale genuine entanglement on a 66-qubit superconducting quantum processor. The approach enables medium-scale quantum computing with superconducting quantum systems.
Article
Multidisciplinary Sciences
Shuai-Peng Wang, Alessandro Ridolfo, Tiefu Li, Salvatore Savasta, Franco Nori, Y. Nakamura, J. Q. You
Summary: Hybrid quantum systems in the ultrastrong and deep-strong coupling regimes exhibit exotic physical phenomena and have potential applications in quantum technologies. In these nonperturbative regimes, a qubit-resonator system has an entangled quantum vacuum with virtual photons that cannot be directly detected. However, the vacuum field can induce symmetry breaking of a dispersively coupled probe qubit. Wang et al. experimentally observe parity symmetry breaking in a probe qubit coupled to a deep-strongly coupled resonator, providing a way to explore novel quantum-vacuum effects.
NATURE COMMUNICATIONS
(2023)
Review
Physics, Multidisciplinary
Giorgio Parisi
Summary: This article is an extended version of the Nobel Lecture, in which the author reviews the genesis of the concept of multiple equilibria in natural sciences, describes their own contribution to the development of this concept within the framework of statistical mechanics, and briefly mentions the numerous applications of these ideas in physics and other disciplines.
REVIEWS OF MODERN PHYSICS
(2023)
Article
Physics, Multidisciplinary
L. Fedeli, A. Sainte-Marie, N. Zaim, M. Thevenet, J. L. Vay, A. Myers, F. Quere, H. Vincenti
Summary: The proposed scheme relies on relativistic plasma mirrors curved by radiation pressure to boost the intensity of petawatt-class laser pulses by Doppler effect and focus them to extreme field intensities. By placing a secondary target where the boosted beam is focused, very clear SF QED signatures could be observed.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Chao Zhang, Wen-Hao Zhang, Pavel Sekatski, Jean-Daniel Bancal, Michael Zwerger, Peng Yin, Gong-Chu Li, Xing-Xiang Peng, Lei Chen, Yong-Jian Han, Jin-Shi Xu, Yun-Feng Huang, Geng Chen, Chuan-Feng Li, Guang-Can Guo
Summary: This letter presents a general and robust device-independent method for detecting and quantifying genuine multipartite entanglement in various realistic quantum states.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Chao Zhang, Wen-Hao Zhang, Pavel Sekatski, Jean-Daniel Bancal, Michael Zwerger, Peng Yin, Gong-Chu Li, Xing-Xiang Peng, Lei Chen, Yong-Jian Han, Jin-Shi Xu, Yun-Feng Huang, Geng Chen, Chuan-Feng Li, Guang-Can Guo
Summary: This study explores a general and robust device-independent method for certifying and quantifying the presence of genuine multipartite entanglement, relying solely on bipartite Bell inequalities. By using this method, several important classes of entangled states have been successfully tested, and genuine multipartite entanglement has been certified in weakly entangled non-standard states.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Jin-Xuan Han, Jin-Lei Wu, Yan Wang, Yan Xia, Yong-Yuan Jiang, Jie Song
Summary: A superconducting qutrit-resonator chain model is proposed, with analytically derived forms of its topological edge states and the generation of N-body GHZ states with robustness. Three schemes for generating large-scale GHZ states are designed, each with the ability to handle qutrit or resonator losses, showing potential for high fidelity among dozens of qutrits. Additionally, experimental considerations for generating GHZ states based on the circuit QED system and the prospect of fast GHZ state realization are discussed.
Article
Materials Science, Multidisciplinary
Olesia Dmytruk, Marco Schiro
Summary: The paper discusses the problem of gauge fixing for strongly correlated electrons coupled to quantum light and presents a general approach to write down a quantum light-matter Hamiltonian in dipole or Coulomb gauge. It shows the unique structures of the dipole and Coulomb gauge Hamiltonians and their connection to the Peierls approximation, with an application to a two-orbital model. The results highlight the importance of treating the nonlinear light-matter interaction nonperturbatively to ensure gauge equivalence and obtain a well-defined ultrastrong coupling limit.
Article
Computer Science, Interdisciplinary Applications
Artem Uskov, Abdaljalel Alizzi, Zurab Silagadze
Summary: In this article, the authors present MuMuPy, a computational library and cloud-based tool for calculating cross sections for the interaction of dimuonium with matter. MuMuPy calculates corresponding form factors and allows one to find the probabilities of dimuonium transitions in the electric field of the nucleus. The reliability of MuMuPy was verified by three independent methods. The authors hope that MuMuPy will be used in future studies of true muonium.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Astronomy & Astrophysics
Francesco Pegoraro, Sergei Bulanov
Summary: In this article, an electromagnetic Lagrangian incorporating dispersive effects in the quantum electrodynamic vacuum is utilized to describe electromagnetic wave propagation. The conceptual limitations of using this higher derivative Lagrangian approach are discussed, and an exact solution to the nonlinear wave equation is obtained in the one-dimensional spatial limit, recovering periodic waves and solitons of the Korteveg-de Vries type.
Article
Chemistry, Multidisciplinary
Wei-Ju Lin, Yong Lu, Ping Yi Wen, Yu-Ting Cheng, Ching-Ping Lee, Kuan Ting Lin, Kuan Hsun Chiang, Ming Che Hsieh, Ching-Yeh Chen, Chin-Hsun Chien, Jia Jhan Lin, Jeng-Chung Chen, Yen Hsiang Lin, Chih-Sung Chuu, Franco Nori, Anton Frisk Kockum, Guin Dar Lin, Per Delsing, Io-Chun Hoi
Summary: This study demonstrates the efficient loading of coherent-state microwave photons with an optimal temporal waveform onto a single superconducting artificial atom. The loading efficiency of 94.2% is achieved by using a weak coherent state and an exponentially rising waveform that matches the decoherence time of the artificial atom. The high loading efficiency is attributed to time-reversal symmetry.
News Item
Multidisciplinary Sciences
Davide Castelvecchi, Katharine Sanderson
Summary: Pierre Agostini, Ferenc Krausz, and Anne L'Huillier have been awarded for their research on ultra-short pulses of light, which has made it possible to study electrons in detail.
Article
Multidisciplinary Sciences
Jake Southall, Daniel Hodgson, Robert Purdy, Almut Beige
Summary: In this paper, a non-Hermitian approach is introduced to model quantum systems with varying symmetries. By comparing it with a Hermitian approach, it is found that the two approaches are equivalent and the choice depends on the specific circumstances to be simulated.
