What is it about?
Silicon photonics is rapidly evolving as an advanced chip framework for implementing quantum technologies. With the help of silicon photonics, general-purpose programmable networks with hundreds of discrete components have been developed. These networks can compute quantum states generated on-chip as well as more extraordinary functions like quantum transmission and random number generation. In particular, the interfacing of silicon photonics with complementary metal oxide semiconductor (CMOS) microelectronics enables us to build miniaturized quantum devices for next-generation sensing, communication, and generating randomness for assembling quantum computers. In this review, we assess the significance of silicon photonics and its interfacing with microelectronics for achieving the technology milestones in the next generation of quantum computers and quantum communication. To this end, especially, we have provided an overview of the mechanism of a homodyne detector and the latest state-of-the-art of measuring squeezed light along with its integration on a photonic chip. Finally, we present an outlook on future studies that are considered beneficial for the wide implementation of silicon photonics for distinct data-driven applications with maximum throughput.
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Why is it important?
With the help of silicon photonics, general-purpose programmable networks with hundreds of discrete components have been developed. These networks can compute quantum states generated on-chip as well as more extraordinary functions like quantum transmission and random number generation. In particular, the interfacing of silicon photonics with complementary metal oxide semiconductor (CMOS) microelectronics enables us to build miniaturized quantum devices for next-generation sensing, communication, and generating randomness for assembling quantum computers.
Perspectives
Silicon photonics interfaced with CMOS microelectronics empowers the implementation of faster data transfer over long distances with low power and high throughput. At present, electrical I/O is used for interconnection between the server board and processors. Every bit of speed-up comes at the cost of significantly increasing power usage. Recent research advances in combining a silicon photonic chip with a silicon microelectronics chip have shown huge promise in taking quantum photonic technology to the next level. Effective measurements of quantum light and the development of advanced detectors and hardware seem to be possible.
Vaseem Akram Shaik
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This page is a summary of: Silicon photonics interfaced with microelectronics for integrated photonic quantum technologies: a new era in advanced quantum computers and quantum communications?, Nanoscale, January 2023, Royal Society of Chemistry,
DOI: 10.1039/d2nr05610k.
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