Boosting the generation rate of squeezed single-photon states by generalized photon subtraction
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arXiv
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| Format: | Preprint |
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2024
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| author | Tomoda, Hiroko Machinaga, Akihiro Takase, Kan Harada, Jun Kashiwazaki, Takahiro Umeki, Takeshi Miki, Shigehito China, Fumihiro Yabuno, Masahiro Terai, Hirotaka Okuno, Daichi Takeda, Shuntaro |
| author_facet | Tomoda, Hiroko Machinaga, Akihiro Takase, Kan Harada, Jun Kashiwazaki, Takahiro Umeki, Takeshi Miki, Shigehito China, Fumihiro Yabuno, Masahiro Terai, Hirotaka Okuno, Daichi Takeda, Shuntaro |
| contents | In optical quantum information processing with continuous variables, optical non-Gaussian quantum states are essential for universal and fault-tolerant quantum computation. Experimentally, their most typical generation method is photon subtraction (PS), where single-photon detection by an on/off detector probabilistically heralds the generation of squeezed single-photon states. In PS, however, trying to avoid unwanted multiphoton detection inevitably limits the generation rate, hindering the application of squeezed single-photon states. Here, we theoretically show that generalized photon subtraction (GPS), a simple extension of PS, can improve the generation rate while maintaining the quality of the generated states. Furthermore, we experimentally demonstrate the generation rate improvement for 2-dB- and 4-dB-squeezed single-photon states compared to PS, by more than one order of magnitude, particularly for the case of 2 dB. Our results will accelerate the application of squeezed single-photon states to more advanced quantum information protocols. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_19304 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Boosting the generation rate of squeezed single-photon states by generalized photon subtraction Tomoda, Hiroko Machinaga, Akihiro Takase, Kan Harada, Jun Kashiwazaki, Takahiro Umeki, Takeshi Miki, Shigehito China, Fumihiro Yabuno, Masahiro Terai, Hirotaka Okuno, Daichi Takeda, Shuntaro Quantum Physics In optical quantum information processing with continuous variables, optical non-Gaussian quantum states are essential for universal and fault-tolerant quantum computation. Experimentally, their most typical generation method is photon subtraction (PS), where single-photon detection by an on/off detector probabilistically heralds the generation of squeezed single-photon states. In PS, however, trying to avoid unwanted multiphoton detection inevitably limits the generation rate, hindering the application of squeezed single-photon states. Here, we theoretically show that generalized photon subtraction (GPS), a simple extension of PS, can improve the generation rate while maintaining the quality of the generated states. Furthermore, we experimentally demonstrate the generation rate improvement for 2-dB- and 4-dB-squeezed single-photon states compared to PS, by more than one order of magnitude, particularly for the case of 2 dB. Our results will accelerate the application of squeezed single-photon states to more advanced quantum information protocols. |
| title | Boosting the generation rate of squeezed single-photon states by generalized photon subtraction |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2404.19304 |