Optical synthesis of large-amplitude squeezed coherent-state superpositions with minimal resources
Abstract
We propose and experimentally realize a novel versatile protocol that allows the quantum state engineering of heralded optical coherent-state superpositions. This scheme relies on a two-mode squeezed state, linear mixing and a -photon detection. It is optimally using expensive non-Gaussian resources to build up only the key non-Gaussian part of the targeted state. In the experimental case of a two-photon detection based on high-efficiency superconducting nanowire single-photon detectors, the freely propagating state exhibits a 67% fidelity with a squeezed even coherent-state superposition with a size =3. The demonstrated procedure and the achieved rate will facilitate the use of such superpositions in subsequent protocols, including fundamental tests and optical hybrid quantum information implementations.
Keywords
Cite
@article{arxiv.1503.08970,
title = {Optical synthesis of large-amplitude squeezed coherent-state superpositions with minimal resources},
author = {K. Huang and H. Le Jeannic and J. Ruaudel and V. B. Verma and M. D. Shaw and F. Marsili and S. W. Nam and E Wu and H. Zeng and Y. -C. Jeong and R. Filip and O. Morin and J. Laurat},
journal= {arXiv preprint arXiv:1503.08970},
year = {2015}
}