Workshop-Quantum Technologies: Where are we at?

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This is an Optica Industry Event (formerly OIDA – OSA Industry Development Associates). Quantum technologies: Where are we at? Updates on commercial viability, scaling challenges, and technical progress. This workshop will examine the current state-of-the-art in data center, terrestrial and satellite-assisted quantum computing and communications, identifying key applications and the role of integrated photonics. It will give specific attention to the novel manufacturing and packaging requirements on integrated photonics and emerging solutions—asking what’s commercially viable and updates on recent progress in that direction. The workshop will identify key challenges to be addressed in using integrated photonics in these quantum applications and develop recommendations to bring attention to critical needs.

 Commercialization of quantum networks and technologies is rapidly evolving with greater capabilities aimed at a broadening set of applications. Recent commercialization activities have focused on addressing markets such as cybersecurity, and related technologies have emerged including quantum enhanced digital currencies, random number generation, and precise network time synchronization. Work is also underway on a wide array of quantum Internet technologies which take advantage of quantum entanglement for distributed quantum computing and sensing. Long distance communication is still limited by the lack of a viable amplification or regeneration technology. Earth to satellite communication links, however, enable a long-distance quantum communication channel. And useful fault-tolerant quantum computers will require quantum interconnects between quantum computer cores, possibly from one cryogenically-cooled chamber to another. Whether very-short-reach, terrestrial or satellite assisted, quantum networking applications are dependent on optical communications, and integrated photonics has been identified as a critical technology to realize scalable and cost-effective solutions.

Quantum networks place unique performance and environmental requirements on integrated photonics. Quantum memories and other qubit devices are required to be held at cryogenic temperatures. Satellite-based devices must further meet the extreme environment of delivery and operation in space and the satellite payload requirements. Many quantum devices involve exotic materials and complex integrated structures such as diamond and magnetic controls or traps. Quantum signals are highly sensitive to optical losses and often require very precise timing alignment. These performance requirements point to custom, high performance packaging solutions and manufacturing methods, which may be problematic for some applications.