On Thursday, October 1, 2020 at 9:43:24 AM UTC-5 [email protected] wrote: > In yesterday's issue of the journal Nature tthere is an article about a > new device that could fit inside a bacterium and can measure changes in > temperature that are extraordinarily tiny and do so with enormous speed. > > Bolometer operating at the threshold for circuit quantum electrodynamics > <https://www.nature.com/articles/s41586-020-2753-3> > > This could be very important to anyone who wants to make a quantum > computer because you could use it to measure the energy of a Qubit, and > that is the most fundamental thing quantum computers do. Normally this is > done by measuring the voltage induced by the Qubit, but this requires a lot > of large amplification circuitry which makes scaling up to more Qubits > very difficult, and the circuitry produces significant amounts of quantum > noise. But this new device requires no additional circuitry, is virtually > noise free, is much smaller, and it needs six orders of magnitude less > energy to run. The device is primarily made from a tiny fleck of Graphene, > a 2D sheet of Carbon atoms. > > John K Clark >
I have not read the article yet, but this seems to operate at the boundary between where thermal and quantum fluctuations lie. LC -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/ffecfc35-3333-4f94-a916-8d130e4326d0n%40googlegroups.com.
