Frequency conversion of single photons in a nonlinear crystal is theoretically discussed. Losses and noise are included within a Heisenberg-Langevin formalism for the propagating photon field. We calculate the first- and second-order correlation functions of the frequency-converted light when the input is a train of single-photon pulses. This model allows one to identify the requirements on the nonlinear device so that it can be integrated in a quantum network. © 2013 American Physical Society.
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Publication status||Published - 7 Nov 2013|