Abstract
We have implemented non-Gaussian operation in pulsed squeezed vacuum at a telecommunications wavelength. A one- or two-photon-subtracted squeezed state was generated using a titanium superconducting transition-edge sensor to resolve the incident photon number. We observed dips in the reconstructed Wigner functions of the generated quantum states, which provides clear evidence that non-Gaussian operation has been realized.
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Acknowledgements
The authors thank T. Itatani for providing support regarding TES device fabrication. This research was supported by National Institute of Information and Communication Technology (NICT).
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N.N. and Y.T. contributed equally as first authors. N.N. and Y.T. performed the experiments and analysed the data. G.F. and D.F. fabricated the photon-number-resolving detector based on the Ti-TES. S.K. fabricated the periodically poled lithium niobate adhered-ridge waveguide. S.I. supervised the project. N.N., Y.T. and S.I. contributed to writing the paper.
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Namekata, N., Takahashi, Y., Fujii, G. et al. Non-Gaussian operation based on photon subtraction using a photon-number-resolving detector at a telecommunications wavelength. Nature Photon 4, 655–660 (2010). https://doi.org/10.1038/nphoton.2010.158
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DOI: https://doi.org/10.1038/nphoton.2010.158
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