Quantum memory in an orthogonal geometry of silenced echo retrieval

详细

We experimentally realize a quantum-memory protocol based on retrieval of silenced echo (ROSE) in Tm³⁺:Y₃Al₅O₁₂ crystal in an orthogonal geometry of the signal and control light fields. The silenced echo signal revival efficiency of ~13% with 36 μs storage time is demonstrated. To achieve that we implemented a high-precision atomic coherence control via amplitude- and phase-modulated laser pulses. We also discuss capabilities of this configuration, ways to increase quantum efficiency and to combine it with a single-mode optical cavity.