Editorial Material
Nanoscience & Nanotechnology
Juan Ignacio Cirac
Summary: Quantum computers and simulators have the potential to greatly impact society, but there are still significant challenges and new opportunities to be discovered.
Editorial Material
Multidisciplinary Sciences
Mohan Sarovar
Summary: Using quantum computers to accelerate the generation of random numbers is a clever strategy that can effectively utilize the upcoming availability of quantum computers.
Article
Physics, Multidisciplinary
Yuan Zhou, Gang Cao, Hai-Ou Li, Guo-Ping Guo
Summary: The coupling between two states induces anticrossings, resulting in curvature in energy levels and nonlinearity in the quantum system. Subharmonic transitions and energy shifts can be observed when the system is driven along the bending energy levels, which is significant for quantum computing applications. In this paper, we study a longitudinally driven singlet-triplet system in a double quantum dot system and demonstrate the consequences of nonlinearity near the anticrossings. Our theoretical analysis quantitatively describes the energy shift and subharmonics caused by nonlinearity and shows good agreement with numerical simulation. This research reveals the presence of nonlinearity near anticrossings and provides a direct and analytical method to assess its impact, which can be applied to other quantum systems with ease.
Editorial Material
Multidisciplinary Sciences
Davide Castelvecchi
Summary: An unusual teleportation experiment, inspired by tunnels in an exotic 'toy universe', utilizes ordinary quantum physics principles.
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
Business
Roman Rietsche, Christian Dremel, Samuel Bosch, Lea Steinacker, Miriam Meckel, Jan-Marco Leimeister
Summary: This article introduces the basic principles and three layers of quantum computing, and explores potential applications and research directions in the field.
ELECTRONIC MARKETS
(2022)
Article
Multidisciplinary Sciences
Qingling Zhu, Sirui Cao, Fusheng Chen, Ming-Cheng Chen, Xiawei Chen, Tung-Hsun Chung, Hui Deng, Yajie Du, Daojin Fan, Ming Gong, Cheng Guo, Chu Guo, Shaojun Guo, Lianchen Han, Linyin Hong, He-Liang Huang, Yong-Heng Huo, Liping Li, Na Li, Shaowei Li, Yuan Li, Futian Liang, Chun Lin, Jin Lin, Haoran Qian, Dan Qiao, Hao Rong, Hong Su, Lihua Sun, Liangyuan Wang, Shiyu Wang, Dachao Wu, Yulin Wu, Yu Xu, Kai Yan, Weifeng Yang, Yang Yang, Yangsen Ye, Jianghan Yin, Chong Ying, Jiale Yu, Chen Zha, Cha Zhang, Haibin Zhang, Kaili Zhang, Yiming Zhang, Han Zhao, Youwei Zhao, Liang Zhou, Chao-Yang Lu, Cheng-Zhi Peng, Xiaobo Zhu, Jian-Wei Pan
Summary: To maintain a long-term quantum computational advantage, upgrading quantum hardware is necessary to compete against continuously improved classical algorithms and hardware. Researchers have demonstrated a superconducting quantum computing system, Zuchongzhi 2.1, with 66 qubits in a tunable coupler architecture. The improved readout fidelity and more powerful quantum processor enable larger-scale random quantum circuit sampling, enhancing the quantum computational advantage significantly.
Article
Business
Rainer Alt
Summary: Dr. Heike Riel, a scientist and Fellow at IBM Research, discusses the current state of quantum computing research in this interview. The conversation focuses on IBM's development of gateable quantum computers and how research has progressed in this area. The interview highlights the significance of speed, scale, and quality in improving the performance of these universal quantum computers compared to classical computers. It also explores the potential applications in solving complex mathematical problems in various fields. The interview concludes with a critical assessment of risks and expectations for the future.
ELECTRONIC MARKETS
(2022)
Editorial Material
Multidisciplinary Sciences
Alessio Belenchia, Matteo Carlesso, Sandro Donadi, Giulio Gasbarri, Hendrik Ulbricht, Angelo Bassi, Mauro Paternostro
Summary: By shooting glass beads across the inside of a satellite, it is possible to investigate the limits of quantum wave behavior.
Editorial Material
Multidisciplinary Sciences
Pippa Wells
Summary: The discovery of 'weak neutral currents' at CERN 50 years ago was a crucial milestone in establishing the standard model of particle physics, and research in this field continues to progress.
Editorial Material
Multidisciplinary Sciences
Sam Cameron, Tannie Liverpool
Summary: This theory suggests that active agents can cooperate even in the presence of disorder. This finding is important for the design of robots and the study of cell migration mechanisms.
Article
Computer Science, Hardware & Architecture
Elias F. Combarro, Sofia Vallecorsa, Luis J. Rodriguez-Muniz, Alvaro Aguilar-Gonzalez, Jose Ranilla, Alberto Di Meglio
Summary: The article discusses the experience of lectures on quantum computing at CERN, focusing on reducing entry barriers and emphasizing practical programming and algorithm implementation rather than traditional mathematical and physical analysis.
JOURNAL OF SUPERCOMPUTING
(2021)
News Item
Multidisciplinary Sciences
Philip Ball
Summary: In order to make quantum computers useful, IBM's latest quantum chip and its competitors have a long journey ahead.
Editorial Material
Multidisciplinary Sciences
Hannah J. Williams
Summary: Two studies demonstrate that using neutral atoms as the platform for building quantum circuits can provide creative solutions.
Editorial Material
Multidisciplinary Sciences
Adam R. Brown, Leonard Susskind
Summary: A system of nine quantum bits has been used to simulate a holographic wormhole state, contributing to the efforts to reconcile quantum mechanics with general relativity.