NIST researchers have developed a more efficient pulse tube refrigerator (PTR) that can cool materials to near absolute zero in significantly less time and with less energy than traditional models. The modified PTR could save an estimated 240 million kilowatt-hours of energy annually, equivalent to $30 million worth of electricity and enough cooling water to fill 5,000 Olympic swimming pools.
The new design addresses inefficiencies in the cooling process, particularly at higher temperatures. By adjusting the mechanical connections between the compressor and refrigerator, the team ensured that none of the helium gas was wasted, improving efficiency. This allows for faster cooldown times, reducing the wait time for quantum circuits to be tested from days to hours.
The technology has broad implications for quantum computing and other quantum research fields, as it enables faster progress and reduces infrastructure needs. The researchers are working to commercialize the technology with an industrial partner, with the goal of making it widely available to support the growing quantum economy.
Keywords: qubits, cryogenic temperatures, ultracold refrigeration
