Entanglement of Optical and Microcavity Modes by Means of an Optoelectronic System

As usual, simpler is better: This study uses optoelectronics, rather than optomechanics, to directly couple optical and microwave cavities, addressing the issue of low-temperature operation of the traditional tripartite system. The approach here allows one to generate and control the quantum entanglement of output cavity modes at $r\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}m$ $t\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}m\phantom{\rule{0}{0ex}}p\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}u\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}e$, which is important for practicality in applications such as quantum sensing (think quantum radar).