Research Article
Non-classical Features in a Pump-free Hybrid Atom-optomechanical System
Adagn Addisu Dabulo*
Issue:
Volume 14, Issue 1, June 2026
Pages:
1-21
Received:
20 March 2026
Accepted:
2 April 2026
Published:
26 May 2026
Abstract: This work investigates the emergence of Non-classical Features in a pump-free hybrid atom-optomechanical system, addressing key limitations of conventional platforms that rely on strong coherent driving and are highly vulnerable to thermal decoherence. We propose a novel architecture in which a squeezed vacuum reservoir acts as a pre-correlated quantum environment, enabling the deterministic generation and stabilization of nonclassical correlations without the need for an external laser pump. By exploiting reservoir-engineered interactions, the system supports robust quadrature squeezing and multipartite entanglement across a wide range of operational parameters. Our analysis demonstrates that the hybrid system achieves significant squeezing levels approaching 90%, while simultaneously satisfying the DGCZ inseparability criterion, confirming the presence of strong continuous-variable entanglement. Importantly, these nonclassical signatures remain resilient under extreme thermal conditions, withstanding thermal occupancies as high as (nth = 1500), which substantially exceeds the tolerance of traditional laser-driven optomechanical systems. The underlying mechanism is attributed to passive correlation injection from the engineered reservoir, which effectively suppresses thermal noise and enhances quantum coherence even in weak-coupling and low-power regimes. This eliminates the need for active pumping, thereby reducing energy consumption and experimental complexity. Furthermore, the hybrid atom-optomechanical configuration introduces additional tunability through atomic gain and population inversion, thereby allowing flexible control over system dynamics and correlation properties. Overall, the proposed scheme establishes a scalable and energy-efficient pathway toward realizing robust quantum correlations in realistic noisy environments. It opens new prospects for cryogen-free quantum technologies, including quantum-enhanced sensing, precision metrology, and long-distance entanglement distribution.
Abstract: This work investigates the emergence of Non-classical Features in a pump-free hybrid atom-optomechanical system, addressing key limitations of conventional platforms that rely on strong coherent driving and are highly vulnerable to thermal decoherence. We propose a novel architecture in which a squeezed vacuum reservoir acts as a pre-correlated qua...
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Letter
Compact Two-dimensional-ultrawide-field-of-view Broadband High-spectral-resolution Snapshot Imaging Spectrometer
Qinghua Yang*,
Zhipeng Wang
Issue:
Volume 14, Issue 1, June 2026
Pages:
22-31
Received:
26 June 2026
Accepted:
8 July 2026
Published:
24 July 2026
DOI:
10.11648/j.optics.20261401.12
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Abstract: For wide-area reconnaissance and surveillance systems, ultrawide field of view, real-time measurement and compact size are very important. This article presents a compact two-dimensional-ultrawide-field-of-view broadband high-spectral-resolution snapshot imaging spectrometer (2DUFBHSIS), which consists of an imaging microlens array, multiple optical fibers, seven identical collimating microlens arrays, seven identical optical filters, seven identical planar transmission gratings, and seven identical detectors. The imaging microlens array is divided into seven identical parts in the horizontal direction, each part coupled to a separate collimating microlens array through optical fibers. The 2DUFBHSIS employs a parallel architecture to effectively balance key performance requirements, including ultrawide field of view, broad spectral coverage, high spectral resolution, real-time spectral imaging and a compact overall design. The theoretical analysis and simulation results are provided to demonstrate the feasibility of the proposed concept. The 2DUFBHSIS can simultaneously achieve two-dimensional ultrawide-field-of-view (e.g. 105°×80°), broad spectral range (e.g. 350 nm), high spectral resolution (superior to 10 nm in the wavelength range of 400 nm to 750 nm), real-time measurement, and compact size (e.g. overall size is less than 130 mm × 100 mm × 100 mm). The 2DUFBHSIS has great potential for wide-area optical reconnaissance and surveillance on remote sensing platforms (e.g., unmanned aerial vehicles and helicopters).
Abstract: For wide-area reconnaissance and surveillance systems, ultrawide field of view, real-time measurement and compact size are very important. This article presents a compact two-dimensional-ultrawide-field-of-view broadband high-spectral-resolution snapshot imaging spectrometer (2DUFBHSIS), which consists of an imaging microlens array, multiple optica...
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