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Entropy, Volume 26, Issue 6

June 2024 - 98 articles

Cover Story: Entanglement engines are autonomous quantum thermal machines designed to generate entanglement from the presence of a particle current flowing through the device. In this work, we investigate the functioning of a two-qubit entanglement engine beyond the steady-state regime. Within a master equation approach, we derive the time-dependent state, the particle current, as well as the associated current correlation functions. Our findings establish a direct connection between coherence and the internal current, elucidating the existence of a critical current that serves as an indicator for entanglement in the steady state. View this paper
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Articles (98)

  • Feature Paper
  • Article
  • Open Access
2 Citations
1,401 Views
13 Pages

A Possibilistic Formulation of Autonomous Search for Targets

  • Zhijin Chen,
  • Branko Ristic and
  • Du Yong Kim

17 June 2024

Autonomous search is an ongoing cycle of sensing, statistical estimation, and motion control with the objective to find and localise targets in a designated search area. Traditionally, the theoretical framework for autonomous search combines sequenti...

  • Article
  • Open Access
4 Citations
1,458 Views
21 Pages

17 June 2024

In this paper, we consider classes of decision tables with many-valued decisions closed under operations of the removal of columns, the changing of decisions, the permutation of columns, and the duplication of columns. We study relationships among th...

  • Article
  • Open Access
2,291 Views
34 Pages

FFT-Based Probability Density Imaging of Euler Solutions

  • Shujin Cao,
  • Peng Chen,
  • Guangyin Lu,
  • Zhiyuan Ma,
  • Bo Yang and
  • Xinyue Chen

15 June 2024

When using traditional Euler deconvolution optimization strategies, it is difficult to distinguish between anomalies and their corresponding Euler tails (those solutions are often distributed outside the anomaly source, forming “tail”-sha...

  • Article
  • Open Access
3 Citations
2,112 Views
13 Pages

Underwater Wavelength Attack on Discrete Modulated Continuous-Variable Quantum Key Distribution

  • Kangyi Feng,
  • Yijun Wang,
  • Yin Li,
  • Yuang Wang,
  • Zhiyue Zuo and
  • Ying Guo

14 June 2024

The wavelength attack utilizes the dependence of beam splitters (BSs) on wavelength to cause legitimate users Alice and Bob to underestimate their excess noise so that Eve can steal more secret keys without being detected. Recently, the wavelength at...

  • Article
  • Open Access
5 Citations
2,172 Views
11 Pages

14 June 2024

Bridgman once reflected on thermodynamics that the laws of thermodynamics were formulated in their present form by the great founders of thermodynamics, Kelvin and Clausius, before all the essential physical facts were in, and there has been no adequ...

  • Article
  • Open Access
1,324 Views
12 Pages

14 June 2024

The problem of testing random number generators is considered and a new method for comparing the power of different statistical tests is proposed. It is based on the definitions of random sequence developed in the framework of algorithmic information...

  • Article
  • Open Access
10 Citations
1,471 Views
14 Pages

14 June 2024

Quantum private comparison (QPC) enables two users to securely conduct private comparisons in a network characterized by mutual distrust while guaranteeing the confidentiality of their private inputs. Most previous QPC protocols were primarily used t...

  • Article
  • Open Access
6 Citations
2,919 Views
29 Pages

12 June 2024

Adopting biomass energy as an alternative to fossil fuels for electricity production presents a viable strategy to address the prevailing energy deficits and environmental concerns, although it faces challenges related to suboptimal energy efficiency...

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Entropy - ISSN 1099-4300