Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Vestnik Moskovskogo Universiteta Seriya 3 Fizika Astronomiya

Secure Quantum Channels Based on Multiphoton Entanglement

Aleksandr V. Belinsky, A. P. Grigorieva, Джадан Игорь Иванович

Published Jan 1, 2025• 0 citations
Publisher

Abstract

The possibilities of transmitting information by quantum channels with multiphoton entanglement are considered. Protocols for quantum key distribution and direct information transmission with strict consideration of the time of sending and receiving messages are compiled, which helps to counteract a wide range of attacks.
DOI
10.55959/msu0579-9392.80.2530102

Related papers

Secure Quantum Channels Based on Multiphoton Entanglement

Aleksandr V. Belinsky, A. P. Grigorieva, Джадан Игорь Иванович

Abstract The potential for information transmission via quantum channels with multiphoton entanglement is considered. Protocols for quantum key distribution and direct information transmission are developed, with strict consideration of the sending and receiving times of messages, which helps to counteract a wide range of attacks.

Moscow University Physics Bulletin•Jun 1, 2025•0 citations

Protocol and applications for sharing quantum private keys

Hanwei Wang, Tien-Sheng Lin, I-Ming Tsai +1 more

Transmitting message in secret is getting more and more important nowadays. In the classical world, the message we sent run the risk of being intercepted by an attacker. As a result, we have to encrypt the message, or send it using a private channel. However, if we transmit messages via such methods, there are still some ways to decipher the information. For example, a powerful computer can be used to decrypt the message or try to steal the message from the private channel. In quantum cryptography, entanglement can be used as a secure channel to transmit information with absolute secrecy. From this perspective, quantum entanglement pairs are equivalent to a quantum private key. However, like the classical key distribution problem, the entanglement has to be shared before it can be used. In this paper, we propose a protocol that can be used to distribute such entanglement pairs securely, so they can be subsequently used to transmit messages with perfect security. The security of this protocol is based on the laws of nature, instead of unproven mathematical hard problems.

IEEE International Carnahan Conference on Security Technology (ICCST)•Jan 1, 2005•7 citations

Economic No-Key Semi-Quantum Direct Communication Protocol

Haoye Lu, Michel Barbeau, Amiya R. Nayak

While secure communication between two quantum parties has been shown possible theoretically, what is the possible direct communication between a full quantum capability sender Alice and a limited quantum capability receiver Bob? This is called Semi- Quantum Direct Communication (SQDC). Several protocols have been proposed for secure SQDC. However, they all need a pre-shared key and at least linear entanglement preservation time, as well as a linear number of quantum bit registers, with respect to message length. Besides, complex hardware implementation (including quantum bit permutations) decreases the transmission efficiency. This paper introduces a no-key SQDC protocol requiring only constant entanglement preservation time and a fixed number of quantum bit registers by adding an authentic public classical channel. The quantum circuit complexity of Alice decreases considerably as well as the number of quantum bits transmitted for sending a fixed length message. Moreover, the protocol is provably secure if some precondition is satisfied.

IEEE Globecom Workshops (GC Wkshps)•Dec 1, 2017•5 citations

Experimental realisation of a deterministic secure quantum communication protocol based on entangled photons

Nino Walenta, Martin R. Ostermeyer

Quantum cryptography protocols using entangled qubit pairs can increase the rate and security of information exchange through a quantum channel. Usually those protocols are non-deterministic, i.e. a classical bit is encoded in a quantum state, but the actual bit value cannot be determined. Therefore they request the transmission of additional information through a public channel. By contrast, the ping-pong coding scheme based on entangled photons allows for deterministic and direct key distribution. No qubit has to be discarded and information can be decoded without the need for a subsequent transmission of additional information. Communication through a public channel nevertheless is necessary to ensure asymptotical security against arbitrary eavesdropping attacks.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 1, 2007•0 citations

Perspective methods for coding information by biphotons in quantum networks

Dmitry A. Kalashnikov

This work describes some schemes using entangled photons for quantum key distribution which is fundamental of the new field called quantum communication. Depending on the circumstances, various protocols are used for the exchange of information.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Mar 3, 2006•0 citations

Entanglement, decoherence, and quantum information

L. Davidovich

Multiphoton entangled states are important for quantum cryptography, quantum computation, precise measurements, and subtle tests of quantum mechanics. I will review recent progress in this area, emphasizing some basic applications and the role of decoherence.

Conference on Lasers and Electro-Optics•May 4, 2008•0 citations
Transmitting message in secret is getting more and more important nowadays. In the classical world, the message we sent run the risk of being intercepted by an attacker. As a result, we have to encrypt the message, or send it using a private channel. However, if we transmit messages via such methods, there are still some ways to decipher the information. For example, a powerful computer can be used to decrypt the message or try to steal the message from the private channel. In quantum cryptography, entanglement can be used as a secure channel to transmit information with absolute secrecy. From this perspective, quantum entanglement pairs are equivalent to a quantum private key. However, like the classical key distribution problem, the entanglement has to be shared before it can be used. In this paper, we propose a protocol that can be used to distribute such entanglement pairs securely, so they can be subsequently used to transmit messages with perfect security. The security of this protocol is based on the laws of nature, instead of unproven mathematical hard problems.
While secure communication between two quantum parties has been shown possible theoretically, what is the possible direct communication between a full quantum capability sender Alice and a limited quantum capability receiver Bob? This is called Semi- Quantum Direct Communication (SQDC). Several protocols have been proposed for secure SQDC. However, they all need a pre-shared key and at least linear entanglement preservation time, as well as a linear number of quantum bit registers, with respect to message length. Besides, complex hardware implementation (including quantum bit permutations) decreases the transmission efficiency. This paper introduces a no-key SQDC protocol requiring only constant entanglement preservation time and a fixed number of quantum bit registers by adding an authentic public classical channel. The quantum circuit complexity of Alice decreases considerably as well as the number of quantum bits transmitted for sending a fixed length message. Moreover, the protocol is provably secure if some precondition is satisfied.
Quantum cryptography protocols using entangled qubit pairs can increase the rate and security of information exchange through a quantum channel. Usually those protocols are non-deterministic, i.e. a classical bit is encoded in a quantum state, but the actual bit value cannot be determined. Therefore they request the transmission of additional information through a public channel. By contrast, the ping-pong coding scheme based on entangled photons allows for deterministic and direct key distribution. No qubit has to be discarded and information can be decoded without the need for a subsequent transmission of additional information. Communication through a public channel nevertheless is necessary to ensure asymptotical security against arbitrary eavesdropping attacks.