quantum & analog: the perfect match
if quantum is inherently analog, then what is "quantum analog"?
allow us to explain...
Analog computation refers to an analogy – or systematic relationship – between the physical processes in the computing device and those in the system it is describing.
The analog device can be used to demonstrate quite clearly multiple facets of the mathematics of quantum mechanics since an analog device computes by exploiting physical phenomena directly.
we have developed a new computational approach, called quantum analog computing
it's analog in 2 ways:
relies on analogies with atomic quantum systems
employs analog electronics
what does this mean?
instead of dealing with extremely sensitive atoms or molecules, we have built artificial atoms by means of analog circuits as the basic computational structure
Each artificial atom is mathematically equivalent to (or are doppelgängers of) an atom in lambda-configuration. More specifically, the analog system represents the dynamics of an electron in an atom irradiated by two laser beams (known as pumping and probe), which couple the two ground states to their common excited state.
The ensemble of artificial atoms interacts collectively to solve a certain problem. An important result of this approach is that the need for error correction disappears. To achieve this, infinityQ has used a concept known as collective computing. All computations were performed at room temperature and were not affected by a detrimental noise.
infinityQ’s device utilizes the concept of collective computing to connect its artificial atoms in an all-to-all topology, thus codifying the problem into the topology of the device. The computation proceeds until a stationary regime is reached.
the stationary regime represents the solution of the problem