Discrete-variable quantum key distribution with homodyne detection

• URL: http://arxiv.org/abs/2109.00492v4
• Date: Mon, 27 Dec 2021 16:17:11 GMT
• Title: Discrete-variable quantum key distribution with homodyne detection
• Authors: Ignatius William Primaatmaja, Cassey Crystania Liang, Gong Zhang, Jing Yan Haw, Chao Wang, Charles Ci-Wen Lim
• Abstract summary: We propose a protocol that combines the simplicity of quantum state preparation in DV-QKD together with the cost-effective and high-bandwidth of homodyne detectors used in CV-QKD. Our simulation suggests that the protocol is suitable for secure and high-speed practical key distribution over distances.
• Score: 14.121646217925441
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Most quantum key distribution (QKD) protocols can be classified as either a discrete-variable (DV) protocol or continuous-variable (CV) protocol, based on how classical information is being encoded. We propose a protocol that combines the best of both worlds -- the simplicity of quantum state preparation in DV-QKD together with the cost-effective and high-bandwidth of homodyne detectors used in CV-QKD. Our proposed protocol has two highly practical features: (1) it does not require the honest parties to share the same reference phase (as required in CV-QKD) and (2) the selection of decoding basis can be performed after measurement. We also prove the security of the proposed protocol in the asymptotic limit under the assumption of collective attacks. Our simulation suggests that the protocol is suitable for secure and high-speed practical key distribution over metropolitan distances.

Related papers

• Twin-field-based multi-party quantum key agreement [0.0]
  We study a method to extend the twin-field key distribution protocol to a scheme for multi-party quantum key agreement. We derive the key rate based on the entanglement-based source-replacement scheme.
  arXiv  Detail & Related papers  (2024-09-06T11:51:10Z)
• Efficient Device-Independent Quantum Key Distribution [4.817429789586127]
  Device-independent quantum key distribution (DIQKD) is a key distribution scheme whose security is based on the laws of quantum physics. We propose an efficient device-independent quantum key distribution protocol in which one participant prepares states and transmits them to another participant.
  arXiv  Detail & Related papers  (2023-11-16T13:01:34Z)
• Dimensional advantage in secure information trading via the noisy dense coding protocol [0.0]
  We present the DC-based QKD protocol for higher dimensional systems. We report the lower bounds on secret key rate, when the shared state is a two-qudit maximally entangled state. We prove that the set of useless states in the DC-based QKD protocol is convex and compact.
  arXiv  Detail & Related papers  (2023-10-31T17:50:48Z)
• 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)
• Robust and efficient verification of graph states in blind measurement-based quantum computation [52.70359447203418]
  Blind quantum computation (BQC) is a secure quantum computation method that protects the privacy of clients. It is crucial to verify whether the resource graph states are accurately prepared in the adversarial scenario. Here, we propose a robust and efficient protocol for verifying arbitrary graph states with any prime local dimension.
  arXiv  Detail & Related papers  (2023-05-18T06:24:45Z)
• Single-photon-memory measurement-device-independent quantum secure direct communication [63.75763893884079]
  Quantum secure direct communication (QSDC) uses the quantum channel to transmit information reliably and securely. In order to eliminate the security loopholes resulting from practical detectors, the measurement-device-independent (MDI) QSDC protocol has been proposed. We propose a single-photon-memory MDI QSDC protocol (SPMQC) for dispensing with high-performance quantum memory.
  arXiv  Detail & Related papers  (2022-12-12T02:23:57Z)
• Data post-processing for the one-way heterodyne protocol under composable finite-size security [62.997667081978825]
  We study the performance of a practical continuous-variable (CV) quantum key distribution protocol. We focus on the Gaussian-modulated coherent-state protocol with heterodyne detection in a high signal-to-noise ratio regime. This allows us to study the performance for practical implementations of the protocol and optimize the parameters connected to the steps above.
  arXiv  Detail & Related papers  (2022-05-20T12:37:09Z)
• Scalable Mediated Semi-quantum Key Distribution [5.548873288570182]
  Mediated semi-quantum key distribution (M-SQKD) permits two limited "semi-quantum" or "classical" users to establish a secret key with the help of a third party (TP) Several protocols have been studied recently for two-party scenarios, but no one has considered M-SQKD for multi-party scenarios.
  arXiv  Detail & Related papers  (2022-05-13T09:21:12Z)
• Composably secure data processing for Gaussian-modulated continuous variable quantum key distribution [58.720142291102135]
  Continuous-variable quantum key distribution (QKD) employs the quadratures of a bosonic mode to establish a secret key between two remote parties. We consider a protocol with homodyne detection in the general setting of composable finite-size security. In particular, we analyze the high signal-to-noise regime which requires the use of high-rate (non-binary) low-density parity check codes.
  arXiv  Detail & Related papers  (2021-03-30T18:02:55Z)
• Round-robin differential phase-time-shifting protocol for quantum key distribution: theory and experiment [58.03659958248968]
  Quantum key distribution (QKD) allows the establishment of common cryptographic keys among distant parties. Recently, a QKD protocol that circumvents the need for monitoring signal disturbance, has been proposed and demonstrated in initial experiments. We derive the security proofs of the round-robin differential phase-time-shifting protocol in the collective attack scenario. Our results show that the RRDPTS protocol can achieve higher secret key rate in comparison with the RRDPS, in the condition of high quantum bit error rate.
  arXiv  Detail & Related papers  (2021-03-15T15:20:09Z)
• A polarization quantum key distribution scheme based on phase matching [0.0]
  The Quantum Key Distribution protocol can encode a single quantum state and implements an information-theoretically secure key distribution protocol in communication. This paper successfully gives the polarization scheme of this PM-QKD protocol, the bases in the polarization scheme are arbitrary, and eliminates detector side channel attacks. The simulation results show that our protocol is superior to the BB84 protocol in terms of transmission distance under the fixed key rate.
  arXiv  Detail & Related papers  (2020-03-02T10:33:18Z)

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.