Arbitrarily rotated optical axis waveguide induced by a trimming line
| Autor: | Ying-De Wang, Zhi-yuan Zhang, Yang Chen, Yi-ke Sun, Yi-chun Li, Zhen-Nan Tian, Xi-Feng Ren, Qi-Dai Chen, Guang-Can Guo |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Optics Letters. 48:3063 |
| ISSN: | 1539-4794 0146-9592 |
| DOI: | 10.1364/ol.493410 |
| Popis: | Rotated optical axis waveguides can facilitate on-chip arbitrary wave-plate operations, which are crucial tools for developing integrated universal quantum computing algorithms. In this paper, we propose a unique technique based on femtosecond laser direct writing technology to fabricate arbitrarily rotated optical axis waveguides. First, a circular isotropic main waveguide with a non-optical axis was fabricated using a beam shaping method. Thereafter, a trimming line was used to create an artificial stress field near the main waveguide to induce a rotated optical axis. Using this technique, we fabricated high-performance half- and quarter-wave plates. Subsequently, high-fidelity (97.1%) Pauli-X gate operation was demonstrated via quantum process tomography, which constitutes the basis for the full manipulation of on-chip polarization-encoded qubits. In the future, this work is expected to lead to new prospects for polarization-encoded information in photonic integrated circuits. |
| Databáze: | OpenAIRE |
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