Article
Quantum Science & Technology
Lidong Xu, Mingqiang Wang
Summary: This paper proposes a quantum digital signature scheme for 2-bit messages based on the idea of superdense teleportation. The scheme ensures conditional security for signing and verifying signatures, and can be iterated for signing multi-bit messages securely.
QUANTUM INFORMATION PROCESSING
(2022)
Article
Optics
D. H. Ahn, Y. D. Jang, J. S. Baek, S. I. Park, J. D. Song, D. Lee
Summary: High-brightness single photon sources (SPSs) are crucial for quantum information processing. Challenges remain in matching the emission wavelength of a quantum dot to the narrow spectral bandwidth of high-Q cavity structures. A highly bright and broadband QD SPS is proposed, which can be deterministically fabricated using a simple method. Experimental results show a brightness of 51.6% +/- 2% and pure single photon emission, indicating the potential of this approach for practical high-brightness QD SPS without expensive lithography and etching processes.
Article
Physics, Applied
Joseph C. Chapman, Charles C. W. Lim, Paul G. Kwiat
Summary: Researchers have developed a quantum communication system for satellite-to-ground communication, achieving low QBER in quantum key distribution protocols. They have demonstrated the execution of a hyperentanglement-based QKD protocol with low QBER, and proven its suitability for a space-to-ground link.
PHYSICAL REVIEW APPLIED
(2022)
Article
Optics
Jin-Hun Kim, Yosep Kim, Dong-Gil Im, Chung-Hyun Lee, Jin-Woo Chae, Giuliano Scarcelli, Yoon-Ho Kim
Summary: This study demonstrates that by using polarization-frequency hyperentanglement, noise-resistant distribution of polarization entanglement through noisy quantum channels can be achieved, resulting in orders-of-magnitude increase in the signal-to-noise ratio for the distribution of polarization-entangled qubit pairs. This enables quantum communications even in the presence of strong noise that would otherwise prevent quantum operations due to noise-induced entanglement sudden death.
Article
Engineering, Electrical & Electronic
Mario Mastriani
Summary: This study presents a simplified version of the quantum teleportation protocol and a generalized version of the superdense coding protocol, both using the cascade splitting technique. The experiments on three different platforms show excellent performance of both protocols. Additionally, an analysis of the protocols' immunity in the presence of an eavesdropper is incorporated.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
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
Physics, Applied
Cristian L. Cortes, Pascal Lefebvre, Nikolai Lauk, Michael J. Davis, Neil Sinclair, Stephen K. Gray, Daniel Oblak
Summary: The article introduces a method to rapidly calibrate the indistinguishability of photons in quantum networks using resource-efficient Bayesian optimization techniques. Experimental results demonstrate that this method can achieve maximal photon indistinguishability quickly, efficiently, and reliably in the presence of high loss and noise.
PHYSICAL REVIEW APPLIED
(2022)
Article
Engineering, Electrical & Electronic
Mario Mastriani
Summary: In the past 30 years, the scientific community has been exploring the phenomenon of quantum teleportation, made possible by the existence of quantum entanglement. This study presents a comprehensive architecture for teleporting Computational Basis States (CBS), which represent each of the 24 classical bits used to encode a 3-color-channel image. The paper introduces classical-to-quantum and quantum-to-classical interfaces, along with two versions of the teleportation protocol: standard and simplified.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Applied
Gui-Long Jiang, Wen-Qiang Liu, Hai-Rui Wei
Summary: In this study, we propose heralded hyperentanglement concentration protocols using linear optics and single-photon detectors to concentrate an unknown partially less polarization-spatial hyperentangled Bell state. Our schemes are highly efficient and accurately heralded by detection signatures, eliminating the need for postselection techniques or photon-number-resolving detectors required in previous experiments.
PHYSICAL REVIEW APPLIED
(2023)
Article
Optics
Christian Drago, Agata M. Branczyk
Summary: In this paper, a method for generating tunable squeezed vacuum states of light with multiple modes encoded in frequency bins is proposed. The method utilizes custom-engineered spontaneous parametric down-conversion driven by a pulse-shaped pump field to generate multimode squeezed states, which can be tuned in real time by adjusting the properties of the pump field. Exploring new quantum states of light encoded in new degrees of freedom can be a fruitful path towards discovering new quantum applications.
Article
Optics
Zhi Zeng
Summary: The method proposed enables the complete analysis of maximally hyperentangled states in polarization and spatial-mode degrees of freedom, suitable for various photon numbers and achieving the analysis through reading bit information and obtaining phase information.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Astronomy & Astrophysics
Neelkamal Mallick, Suraj Prasad, Aditya Nath Mishra, Raghunath Sahoo, Gergely Gabor Barnafoldi
Summary: This study explores the prospects of using deep learning techniques to estimate elliptic flow in heavy-ion collisions and proposes a novel method to process particle kinematic information. The developed deep neural network model shows high accuracy and robustness in both simulation and experimental predictions.
Article
Multidisciplinary Sciences
Shilan Abo, Grzegorz Chimczak, Anna Kowalewska-Kudlaszyk, Jan Perina, Ravindra Chhajlany, Adam Miranowicz
Summary: We describe a novel type of blockade, called hybrid photon-phonon blockade, generated by linear coupling of photonic and phononic modes. By mixing the photonic and phononic modes, which do not exhibit blockade individually, we are able to generate the hybrid photon-phonon blockade.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Multidisciplinary
Joshua J. Guanzon, Matthew S. Winnel, Austin P. Lund, Timothy C. Ralph
Summary: We introduce a linear optical technique that can achieve ideal quantum teleamplification, improving success probability and resource efficiency. We also demonstrate its applications as a loss-tolerant quantum relay for entanglement distribution and distillation.
PHYSICAL REVIEW LETTERS
(2022)
Article
Nanoscience & Nanotechnology
I. Charaev, D. A. Bandurin, A. T. Bollinger, I. Y. Phinney, I. Drozdov, M. Colangelo, B. A. Butters, T. Taniguchi, K. Watanabe, X. He, O. Medeiros, I. Bozovic, P. Jarillo-Herrero, K. K. Berggren
Summary: High-temperature cuprate superconducting nanowires enable single-photon detection at higher temperatures, offering high detection efficiency, signal-to-noise ratio, and fast recovery times. This is crucial for applications such as quantum communication, fluorescence lifetime imaging, and remote sensing. Our research expands the materials family for SNSPD technology, allowing for single-photon detection at common temperatures without the need for costly cooling equipment.
NATURE NANOTECHNOLOGY
(2023)