Photon-echo-based quantum memory of arbitrary light field states

摘要

We develop the general theoretical approach to an optical quantum memory (QM) based on the three-pulse photon echo ( PE) with controlled reversible inhomogeneous broadening. The wavefunction of the retrieved photon echo field is derived explicitly as a function of an arbitrary input data light field taking into account the nonlinear interaction between the quantum light fields and the atomic medium. The result opens a clear possibility for quantum manipulations with arbitrary single- and multi-photon entangled light fields.