Bath memory as a precision resource in quantum transport
Using quantum bath memory to squeeze more precision from atomic-scale devices
Physicists have identified how to harness the quantum environment surrounding tiny conductors to reduce noise and boost measurement precision. The key is tuning the bandwidth of this environment to create synchronized interference patterns in electron flow, allowing devices to achieve better precision than systems without this engineered memory effect.
Quantum dots and other nanoscale devices are candidates for ultra-precise sensors and quantum computers, but noise from their surroundings degrades performance. This work provides experimentalists with a concrete, measurable target—the minimum current noise point—that tells them when their device is operating at peak precision, making it practical to build better quantum technologies.