Photonic integrated circuits (PICs) are revolutionizing the realm of information
technology, promising unprecedented speeds and efficiency in data
processing and optical communication. However, the nanoscale precision
required to fabricate these circuits at scale presents significant challenges,
due to the need to maintain consistency ...
Photonic integrated circuits (PICs) are revolutionizing the realm of information
technology, promising unprecedented speeds and efficiency in data
processing and optical communication. However, the nanoscale precision
required to fabricate these circuits at scale presents significant challenges,
due to the need to maintain consistency across wavelength-selective
components, which necessitates individualized adjustments after fabrication.
Harnessing spectral alignment by automated silicon ion implantation, in this
work scalable and non-volatile photonic computational memories are
demonstrated in high-quality resonant devices. Precise spectral trimming of
large-scale photonic ensembles from a few picometers to several nanometres
is achieved with long-term stability and marginal loss penalty. Based on this
approach, spectrally aligned photonic memory and computing systems for
general matrix multiplication are demonstrated, enabling wavelength
multiplexed integrated architectures at large scales.