Conversion of photon temporal shape using single gradient metasurface
- URL: http://arxiv.org/abs/2503.17134v1
- Date: Fri, 21 Mar 2025 13:35:03 GMT
- Title: Conversion of photon temporal shape using single gradient metasurface
- Authors: Zhaohua Tian, Qi Liu, Yu Tian, Ying Gu,
- Abstract summary: We propose that the single photon temporal shape can be converted through the multi-photon wavepacket interference on a single metasurface.<n>The proposed mechanism provides a compact way for solving the temporal shape mismatch issues in quantum networks.
- Score: 9.617743368174093
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: By applying phase modulation across different frequencies, metasurfaces possess the ability to manipulate the temporal dimension of photons at the femtosecond scale. However, there remains a fundamental challenge to shape the single wavepacket at the nanosecond scale by using of metasurfaces. Here, we propose that the single photon temporal shape can be converted through the multi-photon wavepacket interference on a single metasurface. By selecting appropriate input single-photon temporal shapes and metasurfaces beam splitting ratio, controllable photon shape conversion can be achieved with high fidelity. For examples, photons with an exponentially decaying profile can be shaped into a Gaussian profile; by tuning the relative time delays of input photons, Gaussian-shaped photons can be transformed into exponentially decaying or rising profiles through the same metasurface. The proposed mechanism provides a compact way for solving the temporal shape mismatch issues in quantum networks, facilitating the realization of high-fidelity on-chip quantum information processing.
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