Non-Gaussian state generation with time-gated photon detection
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arXiv
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| Format: | Preprint |
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2022
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| author | Sonoyama, Tatsuki Takahashi, Kazuma Charoensombutamon, Baramee Takasu, Sachiko Hattori, Kaori Fukuda, Daiji Fukui, Kosuke Takase, Kan Asavanant, Warit Yoshikawa, Jun-ichi Endo, Mamoru Furusawa, Akira |
| author_facet | Sonoyama, Tatsuki Takahashi, Kazuma Charoensombutamon, Baramee Takasu, Sachiko Hattori, Kaori Fukuda, Daiji Fukui, Kosuke Takase, Kan Asavanant, Warit Yoshikawa, Jun-ichi Endo, Mamoru Furusawa, Akira |
| contents | Non-Gaussian states of light, which are essential in fault-tolerant and universal optical quantum computation, are typically generated by a heralding scheme using photon detectors. Recently, it is theoretically shown that the large timing jitter of the photon detectors deteriorates the purity of the generated non-Gaussian states [T. Sonoyama, $\textit{et al}$., Phys. Rev. A $\textbf{105}$, 043714 (2022)]. In this study, we generate non-Gaussian states with Wigner negativity by time-gated photon detection. We use a fast optical switch for time gating to effectively improve the timing jitter of a photon-number-resolving detector based on transition edge sensor from 50 ns to 10 ns. As a result, we generate non-Gaussian states with Wigner negativity of $-0.011\pm 0.004$, which cannot be observed without the time-gated photon detection method. These results confirm the effect of the timing jitter on non-Gaussian state generation experimentally for the first time and provide the promising method of high-purity non-Gaussian state generation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_13335 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Non-Gaussian state generation with time-gated photon detection Sonoyama, Tatsuki Takahashi, Kazuma Charoensombutamon, Baramee Takasu, Sachiko Hattori, Kaori Fukuda, Daiji Fukui, Kosuke Takase, Kan Asavanant, Warit Yoshikawa, Jun-ichi Endo, Mamoru Furusawa, Akira Quantum Physics Non-Gaussian states of light, which are essential in fault-tolerant and universal optical quantum computation, are typically generated by a heralding scheme using photon detectors. Recently, it is theoretically shown that the large timing jitter of the photon detectors deteriorates the purity of the generated non-Gaussian states [T. Sonoyama, $\textit{et al}$., Phys. Rev. A $\textbf{105}$, 043714 (2022)]. In this study, we generate non-Gaussian states with Wigner negativity by time-gated photon detection. We use a fast optical switch for time gating to effectively improve the timing jitter of a photon-number-resolving detector based on transition edge sensor from 50 ns to 10 ns. As a result, we generate non-Gaussian states with Wigner negativity of $-0.011\pm 0.004$, which cannot be observed without the time-gated photon detection method. These results confirm the effect of the timing jitter on non-Gaussian state generation experimentally for the first time and provide the promising method of high-purity non-Gaussian state generation. |
| title | Non-Gaussian state generation with time-gated photon detection |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2212.13335 |