Quantum Keyless Private Communication under intense background noise

• URL: http://arxiv.org/abs/2505.07940v1
• Date: Mon, 12 May 2025 18:00:04 GMT
• Title: Quantum Keyless Private Communication under intense background noise
• Authors: Pedro Neto Mendes, Davide Rusca, Hugo Zbinden, Emmanuel Zambrini Cruzeiro,
• Abstract summary: Quantum keyless private communication ensures information-theoretic security in free-space communication.<n>We propose a variant of quantum keyless private communication using polarization encoding and experimentally validate both the original on-off keying method and the polarization-multiplexed approach.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum key distribution relies on quantum mechanics to securely distribute cryptographic keys, offering security but necessitating complex infrastructure and significant resources for practical implementation. Quantum keyless private communication ensures information-theoretic security in free-space communication, with simpler setups, and without the need for secret keys by leveraging the wiretap channel model. Here we propose a variant of quantum keyless private communication using polarization encoding and experimentally validate both the original on-off keying method and the polarization-multiplexed approach using time-multiplexed threshold single-photon detectors as photon counting detectors. Our analysis highlights the advantages of polarization-multiplexed schemes for daylight operation. This work paves the way towards practical and scalable quantum communication systems, with potential applications extending to space-based communication.

Related papers

• Towards efficient and secure quantum-classical communication networks [47.27205216718476]
  There are two primary approaches to achieving quantum-resistant security: quantum key distribution (QKD) and post-quantum cryptography (PQC) We introduce the pros and cons of these protocols and explore how they can be combined to achieve a higher level of security and/or improved performance in key distribution. We hope our discussion inspires further research into the design of hybrid cryptographic protocols for quantum-classical communication networks.
  arXiv  Detail & Related papers  (2024-11-01T23:36:19Z)
• Unconditionally secure key distribution without quantum channel [0.76146285961466]
  Currently, the quantum scheme stands as the only known method for achieving unconditionally secure key distribution. We propose another key distribution scheme with unconditional security, named probability key distribution, that promises users between any two distances to generate a fixed and high secret key rate. Non-local entangled states can be generated, identified and measured in the equivalent virtual protocol and can be used to extract secret keys.
  arXiv  Detail & Related papers  (2024-08-24T15:13:14Z)
• Simulations of distributed-phase-reference quantum key distribution protocols [0.1398098625978622]
  Quantum key distribution protocols provide a secret key between two users with security guaranteed by the laws of quantum mechanics. We perform simulations on the Interconnect platform to characterise the practical implementation of these devices. We briefly describe and simulate some possible eavesdropping attempts, backflash attack, trojan-horse attack and detector-blinding attack exploiting the device imperfections.
  arXiv  Detail & Related papers  (2024-06-13T13:19:04Z)
• Single-Round Proofs of Quantumness from Knowledge Assumptions [41.94295877935867]
  A proof of quantumness is an efficiently verifiable interactive test that an efficient quantum computer can pass. Existing single-round protocols require large quantum circuits, whereas multi-round ones use smaller circuits but require experimentally challenging mid-circuit measurements. We construct efficient single-round proofs of quantumness based on existing knowledge assumptions.
  arXiv  Detail & Related papers  (2024-05-24T17:33:10Z)
• Experimental Quantum Byzantine Agreement on a Three-User Quantum Network with Integrated Photonics [13.10577231578478]
  Building quantum communication networks in a scalable and cost-effective way is essential for their widespread adoption. Here, we establish a polarization entanglement-based fully connected network, which features an ultrabright integrated Bragg reflection waveguide quantum source. We provide the first experimental implementation of source-independent quantum digital signatures using imperfect keys circumventing the necessity for private amplification.
  arXiv  Detail & Related papers  (2024-03-18T03:29:18Z)
• Harnessing high-dimensional temporal entanglement using limited interferometric setups [41.94295877935867]
  We develop the first complete analysis of high-dimensional entanglement in the polarization-time-domain. We show how to efficiently certify relevant density matrix elements and security parameters for Quantum Key Distribution. We propose a novel setup that can further enhance the noise resistance of free-space quantum communication.
  arXiv  Detail & Related papers  (2023-08-08T17:44:43Z)
• Practical quantum secure direct communication with squeezed states [55.41644538483948]
  We report the first table-top experimental demonstration of a CV-QSDC system and assess its security. This realization paves the way into future threat-less quantum metropolitan networks, compatible with coexisting advanced wavelength division multiplexing (WDM) systems.
  arXiv  Detail & Related papers  (2023-06-25T19:23:42Z)
• Revocable Cryptography from Learning with Errors [61.470151825577034]
  We build on the no-cloning principle of quantum mechanics and design cryptographic schemes with key-revocation capabilities. We consider schemes where secret keys are represented as quantum states with the guarantee that, once the secret key is successfully revoked from a user, they no longer have the ability to perform the same functionality as before.
  arXiv  Detail & Related papers  (2023-02-28T18:58:11Z)
• Quantum Key Distribution Using a Quantum Emitter in Hexagonal Boron Nitride [48.97025221755422]
  We demonstrate a room temperature, discrete-variable quantum key distribution system using a bright single photon source in hexagonal-boron nitride. We have generated keys with one million bits length, and demonstrated a secret key of approximately 70,000 bits, at a quantum bit error rate of 6%. Our work demonstrates the first proof of concept finite-key BB84 QKD system realised with hBN defects.
  arXiv  Detail & Related papers  (2023-02-13T09:38:51Z)
• Efficient room-temperature molecular single-photon sources for quantum key distribution [51.56795970800138]
  Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way. We introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm.
  arXiv  Detail & Related papers  (2022-02-25T11:52:10Z)
• Quantum key distribution with entangled photons generated on-demand by a quantum dot [0.0]
  Entanglement-based protocols offer additional layers of security and scale favorably with quantum repeaters. We experimentally demonstrate a modified Ekert quantum key distribution protocol with two quantum channel approaches. Our field study highlights that quantum-dot entangled-photon sources are ready to go beyond laboratory experiments.
  arXiv  Detail & Related papers  (2020-07-24T18:21:19Z)
• Experimental quantum conference key agreement [55.41644538483948]
  Quantum networks will provide multi-node entanglement over long distances to enable secure communication on a global scale. Here we demonstrate quantum conference key agreement, a quantum communication protocol that exploits multi-partite entanglement. We distribute four-photon Greenberger-Horne-Zeilinger (GHZ) states generated by high-brightness, telecom photon-pair sources across up to 50 km of fibre.
  arXiv  Detail & Related papers  (2020-02-04T19:00:31Z)
• Implementation of Continuous-Variable Quantum Key Distribution with Composable and One-Sided-Device-Independent Security Against Coherent Attacks [0.0]
  State-of-the-art quantum key distribution requires composable security against coherent attacks. We present an implementation of continuous-variable quantum key distribution satisfying these requirements. Our work is a crucial step towards practical implementations of quantum key distribution with state-of-the-art security based solely on telecom components.
  arXiv  Detail & Related papers  (2014-06-24T09:20:24Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.