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

arXiv:1408.4561

Entanglement-based quantum communication may prevent tracking the message sender

Michael Siomau

Published Aug 20, 2014• 0 citations
arXivHTMLPDF

Abstract

The possibility of attaining current position of the message sender without person's consent seriously compromises the secrecy of correspondence. Classical communication systems cannot guarantee the security of communication against unwanted location tracking, because the sender must broadcast a signal at the moment of sending the message. The source of the signal could be always located, at least in principle. We show that quantum communication enables sending the message with pre-distributed entangled quantum systems, local weak measurements, time synchronization between the sender and the receiver and classical communication by the message receiver alone, therefore, physically securing the sender's location.

DOI
10.48550/arxiv.1408.4561

Related papers

Entanglement-based quantum communication prevents tracking the message sender

Michael Siomau

The possibility to attain the current position of the message sender without person's consent seriously compromises the secrecy of correspondence. Classical communication systems cannot guarantee the security of communication against unwanted tracking, because the sender must broadcast a signal to send a message. The source of the signal could be always located, at least in principle. Quantum communication, as we show here, enables sending the massage by local manipulations with pre-distributed entangled quantum systems and without transmitting any physical signal and, therefore, secure the sender's location.

•Aug 20, 2014•0 citations

Anonymous quantum communications using the quantum one-time pad

Qing-Le Wang, Fei- Gao, Bin Liu +2 more

We present the first quantum secure communication protocol for an anonymous receiver without the assistance of anonymous entanglement. In previous works, if a public sender wants to send quantum messages to a chosen receiver while protecting the identity of the receiver from others, all participants should cooperate first to construct the entanglement between the sender and the anonymous receiver. This is the most important process in anonymous quantum communications. With anonymous entanglement, the sender can communicate quantum messages to the anonymous receiver by applying teleportation protocols. In contrast, our protocol is novel and achieves communication of quantum messages directly from the public sender to the anonymous receiver based on the quantum one-time pad and current achievements. Notably, the anonymity of the receiver, as well as the privacy of the quantum messages, is perfectly protected with the exception of an exponentially small probability in our protocol.

Physica Scripta•Dec 29, 2014•6 citations

Entanglement enhances security in quantum communication

Rafał Demkowicz-Dobrzański, Aditi Sen, Ujjwal Sen +1 more

Secret sharing is a protocol in which a ``boss'' wants to send a classical message secretly to two ``subordinates,'' such that none of the subordinates is able to know the message alone, while they can find it if they cooperate. Quantum mechanics is known to allow for such a possibility. We analyze tolerable quantum bit error rates in such secret sharing protocols in the physically relevant case when the eavesdropping is local with respect to the two channels of information transfer from the boss to the two subordinates. We find that using entangled encoding states is advantageous to legitimate users of the protocol. We therefore find that entanglement is useful for secure quantum communication. We also find that bound entangled states with positive partial transpose are not useful as a local eavesdropping resource. Moreover, we provide a criterion for security in secret sharing---a parallel of the Csisz\'ar-K\"orner criterion in single-receiver classical cryptography.

arXiv:0802.1811•Physical Review A•Jul 13, 2009•29 citations

Is Entanglement Signaling Really Impossible

Jack Sarfatti

Quantum entanglement cannot be used as a communication channel without an auxiliary light speed limited classical key to unlock the message at the receiver? Hermitian observables guarantee orthogonal sender base states that erase any nonlocal influence of the sender settings on the detection probabilities at the receiver. However, this is no longer true when the entangled whole has different macro-quantum coherent Glauber sender states. Glauber states are non-orthogonal eigenstates of the non-Hermitian photon destruction operator. The Born probability interpretation breaks down because of phase rigidity (P.W. Anderson's More is different). This is a new regime that is to orthodox quantum theory what general relativity is to special relativity. Antony Valentini has argued that the breakdown of the Born probability rule entails signal non locality (aka entanglement signals). The space-time interval between the sending and the receiving irreversible measurements is irrelevant depending only on the free will of the local observers. That is, this is a pre-metrical topological information effect. There is asymmetry between the sending and the receiving. Therefore, there is no ambiguity between active (retro) cause and passive effect. In particular a message can be decoded back from the future before it is sent, but only if it will be sent in a globally self-consistent Novikov time loop.

Bulletin of the American Physical Society•Dec 1, 2011•0 citations

Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement

Yi Xiao-Jie, Yi-you Nie, Nanrun Zhou +3 more

We present a scheme for quantum secure direct communication, in which the message is encoded by local unitary operations, transmitted through entangled photons, and deduced from both the sender and receiver's local measurement results. In such a scheme, only one pair of entangled photons is consumed, and there is no need to transmit the sender's qubit carrying the secret message in a public channel, in order to transmit two-bit classical information.

Communications in Theoretical Physics•Jul 1, 2008•5 citations

Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement

Yi Xiao

We present a scheme for quantum secure direct communication,in which the message is encoded by local unitary operations,transmitted through entangled photons,and deduced from both the sender and receiver's local measurement results.In such a scheme,only one pair of entangled photons is consumed,and there is no need to transmit the sender's qubit carrying the secret message in a public channel,in order to transmit two-bit classical information.

理论物理通讯：英文版•Jan 1, 2008•0 citations
The possibility of attaining current position of the message sender without person's consent seriously compromises the secrecy of correspondence. Classical communication systems cannot guarantee the security of communication against unwanted location tracking, because the sender must broadcast a signal at the moment of sending the message. The source of the signal could be always located, at least in principle. We show that quantum communication enables sending the message with pre-distributed entangled quantum systems, local weak measurements, time synchronization between the sender and the receiver and classical communication by the message receiver alone, therefore, physically securing the sender's location.
The possibility to attain the current position of the message sender without person's consent seriously compromises the secrecy of correspondence. Classical communication systems cannot guarantee the security of communication against unwanted tracking, because the sender must broadcast a signal to send a message. The source of the signal could be always located, at least in principle. Quantum communication, as we show here, enables sending the massage by local manipulations with pre-distributed entangled quantum systems and without transmitting any physical signal and, therefore, secure the sender's location.
We present the first quantum secure communication protocol for an anonymous receiver without the assistance of anonymous entanglement. In previous works, if a public sender wants to send quantum messages to a chosen receiver while protecting the identity of the receiver from others, all participants should cooperate first to construct the entanglement between the sender and the anonymous receiver. This is the most important process in anonymous quantum communications. With anonymous entanglement, the sender can communicate quantum messages to the anonymous receiver by applying teleportation protocols. In contrast, our protocol is novel and achieves communication of quantum messages directly from the public sender to the anonymous receiver based on the quantum one-time pad and current achievements. Notably, the anonymity of the receiver, as well as the privacy of the quantum messages, is perfectly protected with the exception of an exponentially small probability in our protocol.
Secret sharing is a protocol in which a ``boss'' wants to send a classical message secretly to two ``subordinates,'' such that none of the subordinates is able to know the message alone, while they can find it if they cooperate. Quantum mechanics is known to allow for such a possibility. We analyze tolerable quantum bit error rates in such secret sharing protocols in the physically relevant case when the eavesdropping is local with respect to the two channels of information transfer from the boss to the two subordinates. We find that using entangled encoding states is advantageous to legitimate users of the protocol. We therefore find that entanglement is useful for secure quantum communication. We also find that bound entangled states with positive partial transpose are not useful as a local eavesdropping resource. Moreover, we provide a criterion for security in secret sharing---a parallel of the Csisz\'ar-K\"orner criterion in single-receiver classical cryptography.
Quantum entanglement cannot be used as a communication channel without an auxiliary light speed limited classical key to unlock the message at the receiver? Hermitian observables guarantee orthogonal sender base states that erase any nonlocal influence of the sender settings on the detection probabilities at the receiver. However, this is no longer true when the entangled whole has different macro-quantum coherent Glauber sender states. Glauber states are non-orthogonal eigenstates of the non-Hermitian photon destruction operator. The Born probability interpretation breaks down because of phase rigidity (P.W. Anderson's More is different). This is a new regime that is to orthodox quantum theory what general relativity is to special relativity. Antony Valentini has argued that the breakdown of the Born probability rule entails signal non locality (aka entanglement signals). The space-time interval between the sending and the receiving irreversible measurements is irrelevant depending only on the free will of the local observers. That is, this is a pre-metrical topological information effect. There is asymmetry between the sending and the receiving. Therefore, there is no ambiguity between active (retro) cause and passive effect. In particular a message can be decoded back from the future before it is sent, but only if it will be sent in a globally self-consistent Novikov time loop.