Non-Gaussian quantum state generation by multi-photon subtraction at the
telecommunication wavelength
- URL: http://arxiv.org/abs/2301.09871v1
- Date: Tue, 24 Jan 2023 09:13:36 GMT
- Title: Non-Gaussian quantum state generation by multi-photon subtraction at the
telecommunication wavelength
- Authors: Mamoru Endo, Ruofan He, Tatsuki Sonoyama, Kazuma Takahashi, Takahiro
Kashiwazaki, Takeshi Umeki, Sachiko Takasu, Kaori Hattori, Daiji Fukuda,
Kosuke Fukui, Kan Takase, Warit Asavanant, Petr Marek, Radim Filip, Akira
Furusawa
- Abstract summary: 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.
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.
- Score: 0.8013991054257982
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: 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.
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