Asymmetric mode-pairing quantum key distribution

• URL: http://arxiv.org/abs/2401.01727v1
• Date: Wed, 3 Jan 2024 13:06:29 GMT
• Title: Asymmetric mode-pairing quantum key distribution
• Authors: Zeyang Lu, Gang Wang, Chan Li, and Zhu Cao
• Abstract summary: Mode-pairing quantum key distribution (MP-QKD) can surpass the repeaterless rate-transmittance bound without requiring global phase locking. MP-QKD necessitates equal communication distances in two channels, which is a challenging requirement in practical applications. We introduce an optimal-pulse-intensity method, adaptable to various scenarios, to enhance key rates by calculating ideal pulse intensities.
• Score: 4.122493139863035
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Mode-pairing quantum key distribution (MP-QKD) can surpass the repeaterless rate-transmittance bound (Pirandola-Laurenza-Ottaviani-Banchi bound) without requiring global phase locking, exhibiting remarkable flexibility. However, MP-QKD necessitates equal communication distances in two channels, which is a challenging requirement in practical applications. To address this limitation, we extend the original MP-QKD to asymmetric cases. Our decoy-state estimation confirms that asymmetric channel transmittances and asymmetric intensities do not compromise the security of the protocol. We focus on the pulse-intensity relationship, a key factor for optimizing the performance of asymmetric MP-QKD. Unlike previous asymmetric protocols, the intensities of different bases in asymmetric MP-QKD cannot be decoupled. We introduce an optimal-pulse-intensity method, adaptable to various scenarios, to enhance key rates by calculating ideal pulse intensities. Simulation results in various representative scenarios indicate that our method effectively reduces the impact of asymmetric channel distances on MP-QKD performance, enhancing its practical applicability.

Related papers

• Practical hybrid PQC-QKD protocols with enhanced security and performance [44.8840598334124]
  We develop hybrid protocols by which QKD and PQC inter-operate within a joint quantum-classical network. In particular, we consider different hybrid designs that may offer enhanced speed and/or security over the individual performance of either approach.
  arXiv  Detail & Related papers  (2024-11-02T00:02:01Z)
• QSpec: Speculative Decoding with Complementary Quantization Schemes [37.007621357142725]
  Quantization has been substantially adopted to accelerate inference and reduce memory consumption of large language models. We propose a novel quantization paradigm called QSPEC, which seamlessly integrates two complementary quantization schemes for speculative decoding. QSPEC empirically boosts token generation throughput by up to 1.80x without any quality compromise.
  arXiv  Detail & Related papers  (2024-10-15T05:57:51Z)
• Experimental decoy-state asymmetric measurement-device-independent quantum key distribution over a turbulent high-loss channel [0.0]
  Measurement-Device-Independent (MDI) QKD authorizes an untrusted third party to make measurements and removes all side-channel attacks. We demonstrate enhancement in the secure key rate under turbulent conditions for finite-size decoy-state MDI QKD.
  arXiv  Detail & Related papers  (2023-11-07T20:36:33Z)
• Asynchronous measurement-device-independent quantum key distribution with hybrid source [6.7097515257155225]
  We propose an AMDI-QKD protocol with a nonclassical light source. We show that our proposed hybrid source protocol significantly enhances the key rate of the AMDI-QKD protocol.
  arXiv  Detail & Related papers  (2023-04-10T13:18:48Z)
• Symmetric Pruning in Quantum Neural Networks [111.438286016951]
  Quantum neural networks (QNNs) exert the power of modern quantum machines. QNNs with handcraft symmetric ansatzes generally experience better trainability than those with asymmetric ansatzes. We propose the effective quantum neural tangent kernel (EQNTK) to quantify the convergence of QNNs towards the global optima.
  arXiv  Detail & Related papers  (2022-08-30T08:17:55Z)
• 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)
• Noise-resilient Edge Modes on a Chain of Superconducting Qubits [103.93329374521808]
  Inherent symmetry of a quantum system may protect its otherwise fragile states. We implement the one-dimensional kicked Ising model which exhibits non-local Majorana edge modes (MEMs) with $mathbbZ$ parity symmetry. MEMs are found to be resilient against certain symmetry-breaking noise owing to a prethermalization mechanism.
  arXiv  Detail & Related papers  (2022-04-24T22:34:15Z)
• Finite-key Analysis for Quantum Conference Key Agreement with Asymmetric Channels [12.576252829963096]
  Quantum conference key agreement (QCKA) provides unconditional secret keys among multiple parties. Some QCKA protocols employing twin-field was proposed to promote transmission distance. Here, we consider a tripartite QCKA protocol utilizing the idea of sending-or-not-sending twin-field scheme.
  arXiv  Detail & Related papers  (2021-09-23T06:36:31Z)
• 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)
• Enhancing discrete-modulated continuous-variable measurement-device-independent quantum key distribution via quantum catalysis [2.385953310482485]
  discrete modulation can make up for the shortage of transmission distance in measurement device continuous-variable key distribution. We suggest a quantum (QC) approach for enhancing the performance of the discrete-modulated (DM) MDI-CVQKD.
  arXiv  Detail & Related papers  (2020-04-22T07:59:02Z)
• Efficient decoy-states for the reference-frame-independent measurement-device-independent quantum key distribution [22.452971995801686]
  RFI-MDI-QKD eliminates all possible attacks on detector side and necessity of reference-frame alignment in source sides. The performance of RFI-MDI-QKD is greatly improved in terms of secret key rate and achievable distance when statistical fluctuations are considered.
  arXiv  Detail & Related papers  (2020-02-10T11:52:53Z)

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.