Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Conceptual diagram of MUX of heralded single-photon sources (HSPS). a HSPS serves as a PU, consisting of a nonlinear and probabilistic photon-pair source and a single-photon detector. b S-MUX HSPS. c T-MUX HSPS d F-MUX HSPS. MUX schemes in other optical degrees of freedom (e.g., polarization and orbital angular momentum) can also be realized
