High Magnitude Spin-Dependent Shift and Field Enhancement in BaTiO3-Based Plasmonics for Quantum Photonic Applications

This research investigates the integration of photonic spin-orbit interaction (SOI) with plasmonic phenomenon using Barium Titanate (BaTiO3) as the active material. A remarkable transverse spin-dependent shift (SDS) of <inline-formula> <tex-math notation="LaTeX">838~\boldsymbol...

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Bibliographic Details
Published in:IEEE journal of quantum electronics Vol. 61; no. 5; pp. 1 - 8
Main Authors: Kumar, Vinit, Kumar, Ajit, Srivastava, Rupam, Sharma, Anuj K., Prajapati, Yogendra Kumar
Format: Journal Article
Language:English
Published: New York IEEE 01.10.2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
barium titanate
Barium titanates
Biomedical optical imaging
Differentiators
Electric fields
Image edge detection
optical differentiator
Optical imaging
Optical polarization
Optical sensors
Optical variables control
photonic spin Hall effect
Photonics
plasmon
plasmonic sensor
Plasmonics
Plasmons
Refractivity
Resonance
Sensitivity enhancement
Silver
Spin-orbit interaction
Spin-orbit interactions
Zirconium
ISSN:0018-9197, 1558-1713
Online Access:Get full text
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Summary:This research investigates the integration of photonic spin-orbit interaction (SOI) with plasmonic phenomenon using Barium Titanate (BaTiO3) as the active material. A remarkable transverse spin-dependent shift (SDS) of <inline-formula> <tex-math notation="LaTeX">838~\boldsymbol {\mu }\mathbf {m} </tex-math></inline-formula> is demonstrated-approximately 28 times larger than that observed in conventional plasmonic material such as silver (Ag). The study further explores the interplay between the enhanced electric field and spin-dependent splitting under resonance conditions, revealing that the resonance angle is strongly influenced by both SDS magnitude and field enhancement. Leveraging this enhanced spin-based interaction, we demonstrate the potential for quantum-enabled optical device design, including an optical differentiator and a high-sensitivity sensor. The proposed differentiator structure exhibits a power weight of 414.96 for the co-polarized (V-V) component and 0.35 for the cross-polarized (V-H/H-V) component. Moreover, the photonic spin-based sensor architecture achieves a sensitivity enhancement of <inline-formula> <tex-math notation="LaTeX">\sim~52\times </tex-math></inline-formula> compared to a standard plasmonic system at a refractive index of 1.33. These findings establish BaTiO3-integrated plasmonic platforms as promising candidates for advanced spin-based photonic devices in the realm of quantum technologies.
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ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2025.3592448