Quantum Internet: key technologies and future prospect by Zishan LIU, Junsen LAI, Wenyu ZHAO

“…The quantum Internet integrates quantum computing, quantum measurement and communication, which can be described as the future goal of the evolution of quantum information technology.However, due to the restrictions of the laws of quantum mechanics, such as quantum teleportation, quantum entanglement, quantum measurement and non-cloning, which all pose new challenges to the quantum networking design.The basic concepts and development paths of the quantum Internet were firstly introduced, and the implementation differences between the classical network and the quantum network were explained.Considering the difference between quantum communication and the traditional communication, the key technologies for realizing the quantum Internet including the quantum physical devices, networking protocol, quantum decoherence and quantum relay were introduced, and finally the prospect and suggestions for developing quantum Internet was presented.…”
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Controlled Bidirectional Quantum Secure Direct Communication by Yao-Hsin Chou, Yu-Ting Lin, Guo-Jyun Zeng, Fang-Jhu Lin, Chi-Yuan Chen

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Effective metric descriptions of quantum black holes by Manuel Del Piano, Stefan Hohenegger, Francesco Sannino

“…Abstract In a recent work (Del Piano et al. in Phys Rev D 109(2):024045, 2024), we have described spherically symmetric and static quantum black holes as deformations of the classical Schwarzschild metric that depend on the physical distance to the horizon. …”
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On Kadison-Schwarz Type Quantum Quadratic Operators on by Farrukh Mukhamedov, Abduaziz Abduganiev

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Entanglement and quantum discord in the cavity QED models by Hui-hui Miao, Wanshun Li

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Quantum Private Comparison Protocol with Cluster States by Min Hou, Yue Wu

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Single-Photon Detectors for Quantum Integrated Photonics by Thu Ha Dao, Francesco Amanti, Greta Andrini, Fabrizio Armani, Fabrizio Barbato, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata, Matteo Campostrini, Samuele Cornia, Fabio De Matteis, Valeria Demontis, Giovanni Di Giuseppe, Sviatoslav Ditalia Tchernij, Simone Donati, Andrea Fontana, Jacopo Forneris, Roberto Francini, Luca Frontini, Gian Carlo Gazzadi, Roberto Gunnella, Ali Emre Kaplan, Cosimo Lacava, Valentino Liberali, Leonardo Martini, Francesco Marzioni, Claudia Menozzi, Elena Nieto Hernández, Elena Pedreschi, Paolo Piergentili, Paolo Prosposito, Valentino Rigato, Carlo Roncolato, Francesco Rossella, Matteo Salvato, Fausto Sargeni, Jafar Shojaii, Franco Spinella, Alberto Stabile, Alessandra Toncelli, Gabriella Trucco, Valerio Vitali

“…Single-photon detectors have gained significant attention recently, driven by advancements in quantum information technology. Applications such as quantum key distribution, quantum cryptography, and quantum computation demand the ability to detect individual quanta of light and distinguish between single-photon states and multi-photon states, particularly when operating within waveguide systems. …”
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Quantum Speedup of the Dispersion and Codebook Design Problems by Kein Yukiyoshi, Taku Mikuriya, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Naoki Ishikawa

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Hybrid Tree Tensor Networks for Quantum Simulation by Julian Schuhmacher, Marco Ballarin, Alberto Baiardi, Giuseppe Magnifico, Francesco Tacchino, Simone Montangero, Ivano Tavernelli

“…Hybrid tensor networks (hTNs) offer a promising solution for encoding variational quantum states beyond the capabilities of efficient classical methods or noisy quantum computers alone. …”
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Tantalum airbridges for scalable superconducting quantum processors by Kunliang Bu, Sainan Huai, Zhenxing Zhang, Dengfeng Li, Yuan Li, Jingjing Hu, Xiaopei Yang, Maochun Dai, Tianqi Cai, Yi-Cong Zheng, Shengyu Zhang

“…Additionally, the experimental achievement of airbridge coupling with a controlled-Z gate fidelity surpassing 99.2(2)% in a separate two-qubit quantum chip may facilitate scalable quantum computation and quantum error correction with entirely tantalum elements.…”
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Geometry Induced Localization of Electrons in Quantum Pillars by Ioannis G. Tigelis, John P. Xanthakis

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Anomalous coherence length in superconductors with quantum metric by Jin-Xin Hu, Shuai A. Chen, K. T. Law

“…Physically, the Cooper pair size of a superconductor cannot be squeezed down to a size smaller than ℓ qm which is a fundamental length scale determined by the quantum geometry of the wave functions. Lastly, we compute the quantum metric contributions for the family of superconducting moiré graphene materials, demonstrating the significant role played by quantum metric effects in these narrow-band superconductors.…”
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Quantum complexity of time evolution with chaotic Hamiltonians by Vijay Balasubramanian, Matthew DeCross, Arjun Kar, Onkar Parrikar

“…Our analysis relates complexity to familiar properties of physical theories like their spectra and the structure of energy eigenstates and has implications for the hypothesized computational complexity class separations PSPACE BQP/poly and PSPACE BQSUBEXP/subexp, and the “fast-forwarding” of quantum Hamiltonians.…”
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Quantum and Classical Dynamics with Random Permutation Circuits by Bruno Bertini, Katja Klobas, Pavel Kos, Daniel Malz

“…Understanding thermalization in quantum many-body systems is among the most enduring problems in modern physics. …”
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Benchmarking Quantum Circuit Transformation With QKNOB Circuits by Sanjiang Li, Xiangzhen Zhou, Yuan Feng

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Probing quantum floating phases in Rydberg atom arrays by Jin Zhang, Sergio H. Cantú, Fangli Liu, Alexei Bylinskii, Boris Braverman, Florian Huber, Jesse Amato-Grill, Alexander Lukin, Nathan Gemelke, Alexander Keesling, Sheng-Tao Wang, Yannick Meurice, Shan-Wen Tsai

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Learning and forecasting open quantum dynamics with correlated noise by Xinfang Zhang, Zhihao Wu, Gregory A. L. White, Zhongcheng Xiang, Shun Hu, Zhihui Peng, Yong Liu, Dongning Zheng, Xiang Fu, Anqi Huang, Dario Poletti, Kavan Modi, Junjie Wu, Mingtang Deng, Chu Guo

“…This approach shows a path towards efficient and effective learning of noisy quantum dynamics and optimally control quantum processors over long and complex computations even in the presence of correlated noise.…”
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Reliable Quantum Communications Based on Asymmetry in Distillation and Coding by Lorenzo Valentini, Rene Bodker Christensen, Petar Popovski, Marco Chiani

“…The reliable provision of entangled qubits is an essential precondition in a variety of schemes for distributed quantum computing. This is challenged by multiple nuisances, such as errors during the transmission over quantum links, but also due to degradation of the entanglement over time due to decoherence. …”
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Refraction of the Two-Photon Multimode Field via a Three-Level Atom by Trever Harborth, Yuri Rostovtsev

“…The findings are not only interesting for understanding additional physical phenomena due to the increased complexity of a three-level, two-photon system, but are also necessary for advancing applications such as quantum communications, quantum computation, and quantum information.…”
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Nanosensor Data Processor in Quantum-Dot Cellular Automata by Fenghui Yao, Mohamed Saleh Zein-Sabatto, Guifeng Shao, Mohammad Bodruzzaman, Mohan Malkani

“…Quantum-dot cellular automata (QCA) is an attractive nanotechnology with the potential alterative to CMOS technology. …”
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