Tunable Fano Resonance in Diamond Cavity Coupled Optical Nanowire
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2025-08-29 |
| Journal | Advanced Quantum Technologies |
| Authors | Satyajit Murmu, Triranjita Srivastava, Subrat Sahu, Rajan Jha |
| Institutions | University of Allahabad, Indian Institute of Technology Bhubaneswar |
Abstract
Section titled āAbstractāAbstract A fiber inline compatible hybrid diamond cavity system manifesting Fano resonance in transmission, as well as emission spectra, is presented. This system comprises a 1D Bragg cavity structured elliptically faceted diamond nanowire coupled to an optical nanowire. The device exhibits ā47% transmission variation within a wavelength range ā522 pm with a moderate Q āfactor ā1100. The dual supermodeābased photon coupling enables ā80% photon coupling efficiency. The tunability of the Fano lineshape and the Purcell factor as high as 223 is attained by altering the dipole position of the quantum emitter. Such significantly high Purcell factor results in ā150 times reduction in the decay time of quantum emitter emission, thereby allowing faster data transmission. It is believed that the proposed hybrid cavity Fano system may provide a new pathway for quantum optical switches, sensors, and applications at a single photon level.