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Quantum Information: Working towards Applications

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Quantum Information".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 766

Special Issue Editors


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Guest Editor
State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
Interests: quantum communication; quantum computation; quantum information; quantum secure direct communication; quantum algorithm
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Quantum Science Center of Guangdong-Hongkong-Macao Greater Bay Area (Guangdong), Shenzhen 518045, China
Interests: quantum computation; quantum information; coherent ising machine; quantum algorithm; artificial intelligence

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Guest Editor
Beijing Academy of Quantum Information Sciences, Beijing 100193, China
Interests: quantum communication; post-quantum cryptography; quantum information; quantum secure direct communication; nanophotonics

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Guest Editor
QBoson Technology, Beijing 100016, China
Interests: quantum computing; quantum applications; lithium niobate; heterogenous integrated circuits; optimization; photonics

Special Issue Information

Dear Colleagues,

Quantum computing, quantum communication, and quantum sensing are the major themes within quantum information. Using quantum states directly, we can build quantum computers that outperform the most powerful supercomputers in the world, breaking existing cryptography and providing an enormous amount of computing power for scientific computing and other areas where computing power plays a role. Quantum communication is a new communication paradigm that uses quantum states and quantum effects to transmit signals and information. Instead of relying on mathematical complexity for encryption, quantum communication relies on the ability to perceive eavesdropping to protect the security of information. Quantum sensing achieves more precise and more sensitive physical quantities using quantum states.

Now, quantum information is advancing to the application stage. Scientists have built quantum computers with thousands of qubits and preliminary applications are underway, such as calculating chemical structures and analyzing protein folding. Scientists have achieved quantum secure direct communication and quantum key distribution over hundreds or even a thousand kilometers. Atomic clocks and other types of quantum sensors already have a place in real-life applications. Major research results in this field indicate that quantum information is becoming more and more practical. Nevertheless, there are still difficulties that need to be resolved in practical applications, such as achieving quantum error correction, reducing the interference from environmental noise in quantum communication, enhancing the performance of quantum sensors, and so on. This Special Issue aims to summarize and publish research results and research trends in the field of quantum information, working towards new applications.

Prof. Dr. Guilu Long
Dr. Kai Wen
Dr. Min Wang
Dr. Hai Wei
Guest Editors

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Keywords

  • quantum information
  • quantum computing
  • quantum communication
  • quantum sensing

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Published Papers (1 paper)

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Research

18 pages, 737 KiB  
Article
One-Photon-Interference Quantum Secure Direct Communication
by Xiang-Jie Li, Min Wang, Xing-Bo Pan, Yun-Rong Zhang and Gui-Lu Long
Entropy 2024, 26(9), 811; https://doi.org/10.3390/e26090811 - 23 Sep 2024
Abstract
Quantum secure direct communication (QSDC) is a quantum communication paradigm that transmits confidential messages directly using quantum states. Measurement-device-independent (MDI) QSDC protocols can eliminate the security loopholes associated with measurement devices. To enhance the practicality and performance of MDI-QSDC protocols, we propose a [...] Read more.
Quantum secure direct communication (QSDC) is a quantum communication paradigm that transmits confidential messages directly using quantum states. Measurement-device-independent (MDI) QSDC protocols can eliminate the security loopholes associated with measurement devices. To enhance the practicality and performance of MDI-QSDC protocols, we propose a one-photon-interference MDI QSDC (OPI-QSDC) protocol which transcends the need for quantum memory, ideal single-photon sources, or entangled light sources. The security of our OPI-QSDC protocol has also been analyzed using quantum wiretap channel theory. Furthermore, our protocol could double the distance of usual prepare-and-measure protocols, since quantum states sending from adjacent nodes are connected with single-photon interference, which demonstrates its potential to extend the communication distance for point-to-point QSDC. Full article
(This article belongs to the Special Issue Quantum Information: Working towards Applications)
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