Quantum computers are really hard to build. We can engineer the physical building blocks of these precision high tech machines to minimise the impact of imperfections and interference, but only to a certain extent. Errors always occur within the processor and the memory of any quantum computer, and dealing with these quantum errors is a tricky business. The common tools of redundancy and parity checks which keep our laptops and phones from crashing every few seconds just don’t work with fragile quantum states. We’ll look into why not, and at what does work when it comes to fixing quantum mistakes.
A public talk about error correction in quantum computers, presented by Dr. Sam Hile, as part of Sussex University's "Summer of Research" in 2023. Sam is a member of the Ion Quantum Technology group, where individual ions (charged atoms) are levitated above the electrodes of an ion-trap microchip, moved around, and manipulated to encode and process information. This talk focuses on the topic of quantum error correction – why quantum computers are prone to errors, and how to go about detecting and correcting them.
Click on the link below to watch the recording: