| Autor: |
Endo M, He R, Sonoyama T, Takahashi K, Kashiwazaki T, Umeki T, Takasu S, Hattori K, Fukuda D, Fukui K, Takase K, Asavanant W, Marek P, Filip R, Furusawa A |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2023 Apr 10; Vol. 31 (8), pp. 12865-12879. |
| DOI: |
10.1364/OE.486270 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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