Fig. 1: Schematic diagram.
From: High-performance cavity-enhanced quantum memory with warm atomic cell
a Diagram for the cavity-enhanced quantum memory and atomic energy level for quantum memory. Atoms with a ground state \(\left|g\right\rangle\): \(\left|5{S}_{1/2},F=1\right\rangle\), a meta-stable state \(\left|m\right\rangle\): \(\left|5{S}_{1/2},F=2\right\rangle\), and an excited state \(\left|e\right\rangle\): \(\left|5{P}_{1/2},{F}^{\prime}=1\right\rangle\) are shown. The atomic cell is placed between two plano mirrors, where the optical cavity simultaneously enhances the light-atom interaction and suppresses the excess noise. b Experimental setup for implementing cavity-enhanced quantum memory. TA tapered amplifier, PZT piezoelectric transducer, EOAM electro-optical amplitude modulator, EOPM electro-optical phase modulator, AOM acousto-optical modulator, BHD balanced homodyne detector, D photoreceiver detector, M mirror, P Glan–Thompson polarizer, N negative power combiner.
