Quantum Computing hardware

The past decade has seen explosive growth in research dedicated to quantum technologies such as quantum sensing, quantum communication, and quantum computing. Quantum computing hardware requires extremely cold temperatures to operate and are therefore usually placed within a cryogenic dilution refrigerator. Interfacing the ultra-cold quantum device with the room temperature control electronics poses a highly complex cabling challenge, especially in a future where quantum processors have more than a thousand qubits.

The problem becomes clear when you look up a photo of a large quantum computer; all you see are massive cables for quantum computers going down. While bulky semi-rigid coax cable has been sufficient to address and read out tens of qubits, there is a desperate need for higher density interconnects, both from the perspective of physical size as well as decreasing the conduction of heat down the dilution fridge.