Integrated ultrafast all-optical polariton transistors
arxiv(2024)
摘要
The clock speed of electronic circuits has been stagnant at a few gigahertz
for almost two decades because of the breakdown of Dennard scaling, which
states that by shrinking the size of transistors they can operate faster while
maintaining the same power consumption. Optical computing could overcome this
roadblock, but the lack of materials with suitably strong nonlinear
interactions needed to realize all-optical switches has, so far, precluded the
fabrication of scalable architectures. Recently, microcavities in the strong
light-matter interaction regime enabled all-optical transistors which, when
used with an embedded organic material, can operate even at room temperature
with sub-picosecond switching times, down to the single-photon level. However,
the vertical cavity geometry prevents complex circuits with on-chip coupled
transistors. Here, by leveraging silicon photonics technology, we show
exciton-polariton condensation at ambient conditions in micrometer-sized, fully
integrated high-index contrast grating microcavities filled with an optically
active polymer. By coupling two resonators and exploiting seeded polariton
condensation, we demonstrate ultrafast all-optical transistor action and
cascadability. Our experimental findings open the way for scalable, compact
all-optical integrated logic circuits that could process optical signals two
orders of magnitude faster than their electrical counterparts.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要