Research Article
Enhancing Bipartite Entanglement via Optical Parametric Amplifier in an Optomechanical Device
Sisay Belachew*
,
Firomsa Feyissa
Issue:
Volume 13, Issue 1, June 2025
Pages:
1-8
Received:
18 February 2025
Accepted:
27 April 2025
Published:
3 June 2025
DOI:
10.11648/j.optics.20251301.11
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Views:
Abstract: On this paper, we present an in depth evaluation of the bipartite entanglement of cavity radiation from the optomechanical device with an optical parametric amplifier (OPA) placed inside two cavity mode, which together have interaction with a mechanical resonator. Right here by linearizing the equations of motion, we set the entanglement gift inside the gadget, the use of the logarithmic negativity as a degree. We thereby symbolize the adjustments inside the machine entanglement that result from the addition of an quadratic coupling to a linearly coupled gadget. With the assist of the optical parametric amplifier, the desk bounds macroscopic entanglement between the movable replicate and the hollow space subject can be mainly more suitable, and the degree of entanglement increases while the parametric gain increases as well as input laser electricity will increase. For that reason, while an optical parametric amplifier is delivered inside a hollow space, which leads to extensive improvement of the two-mode entanglement. These results establish a promising theoretical basis for optical parametric amplifier (OPA) more suitable bipartite entanglement of optomechanical device for quantum technology and advanced quantum information processing applications.
Abstract: On this paper, we present an in depth evaluation of the bipartite entanglement of cavity radiation from the optomechanical device with an optical parametric amplifier (OPA) placed inside two cavity mode, which together have interaction with a mechanical resonator. Right here by linearizing the equations of motion, we set the entanglement gift insid...
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Research Article
Interference Fringe Analysis for Precision Measurement by Using Conoscopic Interferometer
Yun-Bom Choe*,
Gyong-Song Jang,
Yu-Song Jong,
Il-Su Choe
Issue:
Volume 13, Issue 1, June 2025
Pages:
9-14
Received:
8 April 2025
Accepted:
22 April 2025
Published:
20 June 2025
DOI:
10.11648/j.optics.20251301.12
Downloads:
Views:
Abstract: In this paper, we propose a novel fringe phase analysis method that can quickly and accurately perform the interference fringe analysis for precise measurement by using a conoscopic interferometer. In general, interference fringe phase analysis is an important issue for the measurement using laser interference. Although many studies have been carried out on the conoscopic interferometer and its applications, no full-scale study has been carried out on the problem of the phase analysis of the interference fringes and shortening the time in the precision measurement using the conoscopic interferometer. This problem can be solved by an efficient fringe analysis method. In the conoscopic interferometer, the precision measurement was performed by measuring the change in the number of fringes due to the change in distance. This method has low accuracy and slow measurement speed. In this paper, we propose a novel method to quickly analyze the phase of the conoscopic interference fringe by means of the determination of the extremum points and briefly discuss the interference fringe filtering. Since the interference pattern obtained in the conoscopic interferometer is related to the distance, the analysis of the interference pattern gives the distance. The interference pattern can be simply analyzed since the phase difference between two adjacent extrema is 2π. The proposed method allows a simple and rapid analysis of the interferogram of the conoscopic interferometer, thus increasing the accuracy and speed of precision measurements using the conoscopic interferometer. The proposed fringe analysis method can be used not only for the analysis of the conoscopic interference fringe but also for other sorts of fringe analysis.
Abstract: In this paper, we propose a novel fringe phase analysis method that can quickly and accurately perform the interference fringe analysis for precise measurement by using a conoscopic interferometer. In general, interference fringe phase analysis is an important issue for the measurement using laser interference. Although many studies have been carri...
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