https://thenextweb.com/science/2019/09/19/physicists-race-to-develop-room-temperature-quantum-chips/

A team of physicists from Stevens Institute of Technology recently unveiled the world’s most complex and accurate method for coaxing individual particles of light into interacting with one another. While bullying photons might not sound like a breakthrough, the team’s research is blazing a trail towards the Holy Grail of physics: room-temperature quantum computing chips.

The Stevens team, led by associate professor of physics and director of the Center for Quantum Science and Engineering Yuping Huang, developed a method for forcing photons to interact by etching a quantum-sized micro-cavity in the shape of a racetrack into a lithium niobate crystal compound. They then fired a precision laser into the compound which interacted with the individual photons in a manner that allowed the researchers to tune it for incredibly specific results.