AI Article Synopsis
- Non-Gaussian states with negative Wigner functions are essential for creating fault-tolerant quantum computers, but previous experiments lacked the use of ultrashort optical wave packets.
- This paper reports the successful generation of non-Gaussian states from 8-ps wave packets in the 1545.32 nm telecommunications wavelength, utilizing photon subtraction techniques.
- The research employs advanced technology such as a low-loss waveguide optical parametric amplifier and a pulsed homodyne measurement system, paving the way for more complex non-Gaussian states and improved high-speed quantum computation.
Article 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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| http://dx.doi.org/10.1364/OE.486270 | DOI Listing |
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