Compact Design for Bi-Polarization Quantum Routers on SOI Platform
An ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI). The interferometer is designed to work at the center wavelength of 1550 nm with visibilities of 99.65% and 98.8...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/8/897 |
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| author | Zijie Dai Eryi Pan Xuefeng Chen Xiaoxian Song Haiting Zhang Ying Liang |
| author_facet | Zijie Dai Eryi Pan Xuefeng Chen Xiaoxian Song Haiting Zhang Ying Liang |
| author_sort | Zijie Dai |
| collection | DOAJ |
| description | An ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI). The interferometer is designed to work at the center wavelength of 1550 nm with visibilities of 99.65% and 98.80% for TE and TM polarizations, respectively. Using the principle of phase compensation and self-image, the length of the waveguide tapers is shortened by an order of magnitude with the transmission above 95% for both TE and TM polarizations. Furthermore, polarization beam splitters (PBS) with an ultra-compact footprint of 1.4 × 10.4 μm<sup>2</sup> with transmissions of 98% for bi-polarizations are achieved by introducing anisotropic metamaterials. The simulated results indicate that the interferometer facilitates low loss, a broad operating spectral range, and a large tolerance to size variation in fabrications. The optical switch possesses the routing function while maintaining the polarization states, which promises to pave the point-to-point BB84 protocol into applications of network-based quantum communication. |
| first_indexed | 2024-03-10T23:38:27Z |
| format | Article |
| id | doaj.art-3da0483bfa1842619beee072c8024d82 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T23:38:27Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-3da0483bfa1842619beee072c8024d822023-11-19T02:39:23ZengMDPI AGPhotonics2304-67322023-08-0110889710.3390/photonics10080897Compact Design for Bi-Polarization Quantum Routers on SOI PlatformZijie Dai0Eryi Pan1Xuefeng Chen2Xiaoxian Song3Haiting Zhang4Ying Liang5Institute of Mirco/Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, ChinaInstitute of Mirco/Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, ChinaInstitute of Mirco/Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, ChinaInstitute of Mirco/Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, ChinaInstitute of Mirco/Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, ChinaInstitute of Mirco/Nano Optoelectronic and Terahertz Technology, Jiangsu University, Zhenjiang 212013, ChinaAn ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI). The interferometer is designed to work at the center wavelength of 1550 nm with visibilities of 99.65% and 98.80% for TE and TM polarizations, respectively. Using the principle of phase compensation and self-image, the length of the waveguide tapers is shortened by an order of magnitude with the transmission above 95% for both TE and TM polarizations. Furthermore, polarization beam splitters (PBS) with an ultra-compact footprint of 1.4 × 10.4 μm<sup>2</sup> with transmissions of 98% for bi-polarizations are achieved by introducing anisotropic metamaterials. The simulated results indicate that the interferometer facilitates low loss, a broad operating spectral range, and a large tolerance to size variation in fabrications. The optical switch possesses the routing function while maintaining the polarization states, which promises to pave the point-to-point BB84 protocol into applications of network-based quantum communication.https://www.mdpi.com/2304-6732/10/8/897quantum routerpolarization beams splittersintegrated photonicssilicon-on-insulator |
| spellingShingle | Zijie Dai Eryi Pan Xuefeng Chen Xiaoxian Song Haiting Zhang Ying Liang Compact Design for Bi-Polarization Quantum Routers on SOI Platform Photonics quantum router polarization beams splitters integrated photonics silicon-on-insulator |
| title | Compact Design for Bi-Polarization Quantum Routers on SOI Platform |
| title_full | Compact Design for Bi-Polarization Quantum Routers on SOI Platform |
| title_fullStr | Compact Design for Bi-Polarization Quantum Routers on SOI Platform |
| title_full_unstemmed | Compact Design for Bi-Polarization Quantum Routers on SOI Platform |
| title_short | Compact Design for Bi-Polarization Quantum Routers on SOI Platform |
| title_sort | compact design for bi polarization quantum routers on soi platform |
| topic | quantum router polarization beams splitters integrated photonics silicon-on-insulator |
| url | https://www.mdpi.com/2304-6732/10/8/897 |
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