We theoretically investigate the electromagnetically induced acoustic transparency in a four-level tripod (\(\pitchfork\))-type superconducting transmon circuit with three electromagnetic beams: a weak microwave signal beam, a surface acoustic wave (SAW) probe beam, and a strong microwave control beam, due to which the SAW probe beam becomes transparent through the circuit. We show the transmission and reflection of a SAW probe beam using the semi-classical method in a steady-state regime. In particular, we notice a coherent gain in our system, which enhances the SAW’s transmission as it passes through the transmon circuit while substantially lowering the group velocity. We also investigate the electromagnetically induced acoustic transparency in a Doppler broadening regime and demonstrate that Doppler broadening has a considerable influence on the electromagnetically induced acoustic transparency. Our scheme may be useful in superconducting devices that have direct applications in quantum memories.

我们从理论上研究了具有三个电磁束的四级三脚架 ( \(\pitchfork\) ) 型超导传输电路中的电磁感应声透明度：弱微波信号束、表面声波 (SAW) 探测光束和电磁波束。强微波控制光束，因此 SAW 探测光束通过电路变得透明。我们使用半经典方法在稳态状态下展示了 SAW 探测光束的透射和反射。特别是，我们注意到我们的系统中有一个相干增益，它增强了声表面波通过传输电路时的传输，同时大大降低了群速度。我们还研究了多普勒展宽状态下的电磁感应声透明度，并证明多普勒展宽对电磁感应声透明度有相当大的影响。我们的方案可能适用于直接应用于量子存储器的超导器件。