Design of quantum nonclassicality enhancing circuit (QNC): compromise among noise figure, gain, and nonclassicality
Journal of Computational Electronics, cilt.25, sa.5, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 25 Sayı: 5
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s10825-026-02630-4
- Dergi Adı: Journal of Computational Electronics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Compendex, INSPEC, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Low noise amplifier, Noise figure, Nonclassicality, Quantum nonclassicality enhancing circuit, Quantum theory
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
This study presents the design and analysis of a specialized RF/MW circuit named the Quantum Non-classicality Enhancing Circuit, specifically developed for quantum applications. The primary objective is to reduce the noise figure within the operational frequency range of 4–8 GHz to enhance nonclassical properties in quantum signals. To achieve this, a HEMT was chosen due to its exceptional noise reduction capabilities, which are critical for quantum engineering. While targeting a noise figure of less than 0.065 dB within the specified frequency band, a trade-off with gain was identified. This issue was addressed by introducing additional amplification stages to stabilize the noise figure without compromising overall performance. Quantum analysis of the circuit, based on a simplified HEMT model, provided valuable insights into its nonlinear behavior and the interaction between circuit components and environmental factors. Using the QuTiP toolbox in Python, a time-evolution analysis of the system was conducted, revealing the circuit’s response as an open quantum system under cryogenic conditions. The study also explores the relationship between quantum correlation (measured by quantum discord) and the noise figure, raising significant questions about the impact of noise minimization on enhancing nonclassicality at low temperatures. Alongside the quantum analysis, a detailed circuit layout was designed and optimized to minimize the noise figure. The findings from the quantum analysis demonstrated that nonclassicality generation and noise minimization share a common foundation, reinforcing the design approach. This comprehensive study highlights the complex interplay between circuit design and quantum properties, offering a strategic path toward improved quantum signal processing at cryogenic temperatures.