Report

Metalens-array–based high-dimensional and multiphoton quantum source

See allHide authors and affiliations

Science  26 Jun 2020:
Vol. 368, Issue 6498, pp. 1487-1490
DOI: 10.1126/science.aba9779

You are currently viewing the editor's summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Metalens-array–based quantum source

Spontaneous down-conversion is an exotic optical process in a nonlinear crystal in which a high-energy photon splits into two lower-energy photons that are quantum mechanically entangled. These entangled pairs are valuable commodities for quantum information processing and quantum communications. Because the experimental setup is usually performed with bulk optical components, there is a need to decrease the size scale for application. Li et al. combined an array of specialized metalenses with a nonlinear crystal and show that the scale of the process can be shrunk substantially. The approach should prove useful for developing miniaturized integrated quantum optical technologies.

Science, this issue p. 1487

View Full Text

Stay Connected to Science