A superconducting dual-channel photonic switch
The mechanism of Cooper pair formation and its underlying physics has long occupied the investigation into high temperature (high-Tc ) cuprate superconductors. One of the ways to unravel this is to observe the ultrafast response present in the charge carrier dynamics of a photoexcited specimen. This...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/137405 |
| _version_ | 1826128462281179136 |
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| author | Srivastava, Yogesh Kumar Manjappa, Manukumara Cong, Longqing Krishnamoorthy, Harish N. S. Savinov, Vassili Pitchappa, Prakash Singh, Ranjan |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Srivastava, Yogesh Kumar Manjappa, Manukumara Cong, Longqing Krishnamoorthy, Harish N. S. Savinov, Vassili Pitchappa, Prakash Singh, Ranjan |
| author_sort | Srivastava, Yogesh Kumar |
| collection | NTU |
| description | The mechanism of Cooper pair formation and its underlying physics has long occupied the investigation into high temperature (high-Tc ) cuprate superconductors. One of the ways to unravel this is to observe the ultrafast response present in the charge carrier dynamics of a photoexcited specimen. This results in an interesting approach to exploit the dissipation-less dynamic features of superconductors to be utilized for designing high-performance active subwavelength photonic devices with extremely low-loss operation. Here, dual-channel, ultrafast, all-optical switching and modulation between the resistive and the superconducting quantum mechanical phase is experimentally demonstrated. The ultrafast phase switching is demonstrated via modulation of sharp Fano resonance of a high-Tc yttrium barium copper oxide (YBCO) superconducting metamaterial device. Upon photoexcitation by femtosecond light pulses, the ultrasensitive cuprate superconductor undergoes dual dissociation-relaxation dynamics, with restoration of superconductivity within a cycle, and thereby establishes the existence of dual switching windows within a timescale of 80 ps. Pathways are explored to engineer the secondary dissociation channel which provides unprecedented control over the switching speed. Most importantly, the results envision new ways to accomplish low-loss, ultrafast, and ultrasensitive dual-channel switching applications that are inaccessible through conventional metallic and dielectric based metamaterials. |
| first_indexed | 2024-10-01T07:25:01Z |
| format | Journal Article |
| id | ntu-10356/137405 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:25:01Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1374052023-02-28T19:37:28Z A superconducting dual-channel photonic switch Srivastava, Yogesh Kumar Manjappa, Manukumara Cong, Longqing Krishnamoorthy, Harish N. S. Savinov, Vassili Pitchappa, Prakash Singh, Ranjan School of Physical and Mathematical Sciences Center for Disruptive Photonic Technologies The Photonics Institute Science::Physics Dual-channel Switching High-temperature Superconductors The mechanism of Cooper pair formation and its underlying physics has long occupied the investigation into high temperature (high-Tc ) cuprate superconductors. One of the ways to unravel this is to observe the ultrafast response present in the charge carrier dynamics of a photoexcited specimen. This results in an interesting approach to exploit the dissipation-less dynamic features of superconductors to be utilized for designing high-performance active subwavelength photonic devices with extremely low-loss operation. Here, dual-channel, ultrafast, all-optical switching and modulation between the resistive and the superconducting quantum mechanical phase is experimentally demonstrated. The ultrafast phase switching is demonstrated via modulation of sharp Fano resonance of a high-Tc yttrium barium copper oxide (YBCO) superconducting metamaterial device. Upon photoexcitation by femtosecond light pulses, the ultrasensitive cuprate superconductor undergoes dual dissociation-relaxation dynamics, with restoration of superconductivity within a cycle, and thereby establishes the existence of dual switching windows within a timescale of 80 ps. Pathways are explored to engineer the secondary dissociation channel which provides unprecedented control over the switching speed. Most importantly, the results envision new ways to accomplish low-loss, ultrafast, and ultrasensitive dual-channel switching applications that are inaccessible through conventional metallic and dielectric based metamaterials. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-03-24T05:14:56Z 2020-03-24T05:14:56Z 2018 Journal Article Srivastava, Y. K., Manjappa, M., Cong, L., Krishnamoorthy, H. N. S., Savinov, V., Pitchappa, P., & Singh, R. (2018). A superconducting dual-channel photonic switch. Advanced Materials, 30(29), 1801257-. doi:10.1002/adma.201801257 0935-9648 https://hdl.handle.net/10356/137405 10.1002/adma.201801257 29870580 2-s2.0-85049897166 29 30 en Advanced Materials https://doi.org/10.21979/N9/L6ILCD This is the peer reviewed version of the following article: Srivastava, Y. K., Manjappa, M., Cong, L., Krishnamoorthy, H. N. S., Savinov, V., Pitchappa, P., & Singh, R. (2018). A superconducting dual-channel photonic switch. Advanced Materials, 30(29), 1801257-., which has been published in final form at [https://doi.org/10.1002/adma.201801257]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Science::Physics Dual-channel Switching High-temperature Superconductors Srivastava, Yogesh Kumar Manjappa, Manukumara Cong, Longqing Krishnamoorthy, Harish N. S. Savinov, Vassili Pitchappa, Prakash Singh, Ranjan A superconducting dual-channel photonic switch |
| title | A superconducting dual-channel photonic switch |
| title_full | A superconducting dual-channel photonic switch |
| title_fullStr | A superconducting dual-channel photonic switch |
| title_full_unstemmed | A superconducting dual-channel photonic switch |
| title_short | A superconducting dual-channel photonic switch |
| title_sort | superconducting dual channel photonic switch |
| topic | Science::Physics Dual-channel Switching High-temperature Superconductors |
| url | https://hdl.handle.net/10356/137405 |
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