Time can flow to the past

A team of physicists from the universities of Bristol, Vienna,
the Balearic Islands and the Institute for Quantum Optics and
Quantum Information (IQOQI-Vienna) has shown how quantum
systems can simultaneously evolve in two opposite directions of
time, both forward into the future and back into the past. The work
was published in the latest issue of the journal Communications
Physics and is freely available at this link
(https://go.nature.com/3EcVfuI).
The measure of time for an experiment with a time superposition
of a quantum system, physicists took entropy. In the macrocosm,
entropy in a number of physical systems can be measured
quantitatively, determines the degree of complexity, chaos or
uncertainty of the system, and in natural conditions it only
increases. In entropy, under conditions observed at the human level,
movement is always forward into the future. If at the quantum level
it was possible to detect a decrease in entropy, then this, with
assumptions, could be correlated with movement back into the past.
An experiment carried out by an international group of physicists
on a system limited by several quantum elements showed that a system
in a stable state not only increases its entropy, but also decreases it.
As scientists conclude, moves back in time.
It is impossible to see such phenomena in the macrocosm in it the
entropy of events is too large and therefore irreversible, but at
the subatomic level, backward reversals in time are fully recorded,
which was proved by the experiment set up. Although time is often
viewed as an ever-increasing parameter, research shows that the laws
governing its flow in quantum mechanical contexts are much more
complex. This may indicate that we need to rethink the way we
represent this quantity in all those cases where quantum laws play
a decisive role.