Article
Physics, Multidisciplinary
Leizhen Chen, Liangliang Lu, Lijun Xia, Yanqing Lu, Shining Zhu, Xiao-song Ma
Summary: Integrated quantum photonics is a rapidly developing field that allows for the generation, manipulation, and detection of entangled photons. Multipartite entangled states, such as the Dicke states, are essential for scalable quantum information processing. In this study, we demonstrate the generation and coherent control of four-photon Dicke states using a silicon photonic chip. The generated photons are in the telecom band, making them suitable for large-scale photonic quantum technologies for multiparty networking and metrology.
PHYSICAL REVIEW LETTERS
(2023)
Article
Optics
Gonzalo Carvacho, Emanuele Roccia, Mauro Valeri, Francesco Basso Basset, Davide Poderini, Claudio Pardo, Emanuele Polino, Lorenzo Carosini, Michele B. Rota, Julia Neuwirth, Saimon F. Covre da Silva, Armando Rastelli, Nicolo Spagnolo, Rafael Chaves, Rinaldo Trotta, Fabio Sciarrino
Summary: Quantum networks are important for distributed quantum information processing, and researchers have implemented a simple bilocality scenario in an urban network to establish quantum communication and shared entanglement. By violating a nonlinear Bell inequality, the nonlocal behavior of the network nodes is demonstrated.
Article
Quantum Science & Technology
Jorge Miguel-Ramiro, Ferran Riera-Sabat, Wolfgang Duer
Summary: This paper introduces a quantum repeater protocol to distribute three-qubit W states over arbitrary distances in a two-dimensional triangular quantum network. The repeater protocol enables efficient applications between remote parties by combining probabilistic entanglement swapping and an improved entanglement purification protocol. The protocol also allows for error handling and provides analysis of error thresholds, achievable fidelities, and overheads.
Article
Optics
Ayan Patra, Rivu Gupta, Saptarshi Roy, Tamoghna Das, Aditi Sen(De)
Summary: This study introduces a framework of a multimode dense coding network for communication between multiple senders and a single receiver using continuous variable systems. The research shows that the dense coding capacity increases with the amount of energy transmitted from the senders to the receiver, demonstrating the quantum advantage of the protocol.
Article
Materials Science, Multidisciplinary
Guang Ping He
Summary: We propose a cheating strategy against a relativistic quantum commitment scheme (Nadeem, 2014) that claimed to be unconditionally secure. It is demonstrated that the sender Alice can cheat with a 100% success rate, thereby disproving the security claim.
RESULTS IN PHYSICS
(2023)
Article
Multidisciplinary Sciences
R. Sahu, L. Qiu, W. Hease, G. Arnold, Y. Minoguchi, P. Rabl, J. M. Fink
Summary: Quantum entanglement is a crucial resource in current quantum technologies and sharing it would enable new functionalities. However, there has been an issue of energy scale mismatch between microwave and optical fields in a millikelvin environment. Through the use of an optically pulsed superconducting electro-optical device, we have achieved entanglement between propagating microwave and optical fields in the continuous variable domain. This achievement not only opens up possibilities for entanglement between superconducting circuits and telecom wavelength light, but also has significant implications for hybrid quantum networks in terms of modularity, scaling, sensing, and cross-platform verification.
Article
Optics
Shaoping Shi, Yajun Wang, Long Tian, Wei Li, Yimiao Wu, Qingwei Wang, Yaohui Zheng, Kunchi Peng
Summary: This article presents a fully connected continuous-variable quantum teleportation network architecture, where a squeezed state of light distributes entangled sideband modes to each communication link, offering potential for various tasks of quantum information processing.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Cheng Chi, Qiao Jiang, Zhixin Liu, Liheng Zheng, Meiling Jiang, Han Zhang, Feng Lin, Bo Shen, Zheyu Fang
Summary: The study demonstrates selective manipulation of photon spin angular momentum at a deep subwavelength scale via electron-induced OSHE in Au nanoantennas, suggesting an information encoding scheme with robustness, privacy, and high level of integration for future quantum applications.
Article
Physics, Multidisciplinary
P. Drmota, D. Main, D. P. Nadlinger, B. C. Nichol, M. A. Weber, E. M. Ainley, A. Agrawal, R. Srinivas, G. Araneda, C. J. Ballance, D. M. Lucas
Summary: A long-lived memory qubit was successfully integrated into a mixed-species trapped-ion quantum network node. Ion-photon entanglement was initially generated between a network qubit in 88Sr+ and transferred to 43Ca+ with a fidelity of 0.977(7), and then mapped to a robust memory qubit. The network qubit was further entangled with a second photon without affecting the memory qubit. Quantum state tomography showed that the decay of ion-photon entanglement fidelity on the memory qubit was about 70 times slower. Dynamical decoupling extended the storage duration, achieving an ion-photon entanglement fidelity of 0.81(4) after 10 s.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Caterina Vigliar, Stefano Paesani, Yunhong Ding, Jeremy C. Adcock, Jianwei Wang, Sam Morley-Short, Davide Bacco, Leif K. Oxenlowe, Mark G. Thompson, John G. Rarity, Anthony Laing
Summary: Error-protection schemes can increase the success rate of quantum algorithms. General-purpose quantum computers can entangle noisy physical qubits to protect against errors. Measurement-based quantum computing architectures are the most viable approach for constructing an all-photonic quantum computer.
Article
Physics, Multidisciplinary
Mohammad Bolokian, Monireh Houshmand, Mohammad-Sadegh Sadeghizadeh, Maryam Parvaneh
Summary: The article introduces a new quantum teleportation protocol for an arbitrary number of users, distributing entangled states to achieve transmission. The sender selects the receiver and collaborates with other users to transmit the state to the receiver. Applications of this protocol include quantum networks, cloud computing, and quantum cryptography.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2021)
Article
Computer Science, Information Systems
Manal Khawasik, Wagdy Elsayed, Magdi Rashad, Ahmed Younes
Summary: This paper proposes a secured quantum two-bit commitment protocol for any two classical bits. The protocol utilizes different security layers to hide specific quantum states and applies secured unitary transformations to meet the concealing and binding conditions. The success of the protocol is verified by comparing the measured output.
Article
Optics
Yuri Malakyan
Summary: This article presents a linear Hong-Ou-Mandel (HOM) scheme based on lossless three-wave mixing in laser-controlled tripod-type atoms. The scheme allows two photons of different frequencies to interfere, enabling controlled transfer of quantum information in hybrid quantum networks. The proposed scheme is robust to photon polarization indistinguishability, making it versatile for use in various quantum network architectures.
Article
Quantum Science & Technology
Liaqat Ali, Rameez-ul-Islam, Manzoor Ikram, Tasawar Abbas, Iftikhar Ahmad
Summary: This study proposes a scheme for teleporting an unknown superposition of external atomic quantized momentum states using atomic Bragg diffraction and explores its experimental feasibility.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Multidisciplinary Sciences
Yi-Han Luo, Ming-Cheng Chen, Manuel Erhard, Han-Sen Zhong, Dian Wu, Hao-Yang Tang, Qi Zhao, Xi-Lin Wang, Keisuke Fujii, Li Li, Nai-Le Liu, Kae Nemoto, William J. Munro, Chao-Yang Lu, Anton Zeilinger, Jian-Wei Pan
Summary: Quantum gate teleportation proposes an elegant solution to replace fragile nontransverse inline gates with specific highly entangled offline resource states for implementing nontransverse gates in circuits. By creating maximally entangled states and teleporting quantum information, the scheme can achieve fidelities up to 0.786 and be fully fault tolerant for future large-scale quantum technologies.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
