Non-Gaussian quantum state generation by multi-photon subtraction at the telecommunication wavelength
| Autor: | Endo, Mamoru, He, Ruofan, Sonoyama, Tatsuki, Takahashi, Kazuma, Kashiwazaki, Takahiro, Umeki, Takeshi, Takasu, Sachiko, Hattori, Kaori, Fukuda, Daiji, Fukui, Kosuke, Takase, Kan, Asavanant, Warit, Marek, Petr, Filip, Radim, Furusawa, Akira |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Optics Express 31, 12865-12879 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OE.486270 |
| Popis: | In the field of continuous-variable quantum information processing, non-Gaussian states with negative values of the Wigner function are crucial for the development of a fault-tolerant universal quantum computer. While several non-Gaussian states have been generated experimentally, none have been created using ultrashort optical wave packets, which are necessary for high-speed quantum computation, in the telecommunication wavelength band where mature optical communication technology is available. In this paper, we present the generation of non-Gaussian states on wave packets with a short 8-ps duration in the 1545.32 nm telecommunication wavelength band using photon subtraction up to three photons. We used a low-loss, quasi-single spatial mode waveguide optical parametric amplifier, a superconducting transition edge sensor, and a phase-locked pulsed homodyne measurement system to observe negative values of the Wigner function without loss correction up to three-photon subtraction. These results can be extended to the generation of more complicated non-Gaussian states and are a key technology in the pursuit of high-speed optical quantum computation. Comment: 14 pages, 5 figures |
| Databáze: | arXiv |
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