Antimatter is slowly coming out of science fiction and entering
reality. Two antimatter breakthroughs can solve the universe’s oldest
mystery and reveal strange new particles perfect for quantum computers.
The
first discovery explains the composition of the universe. CDF physicist
studies the decays of subatomic particles called D-mesons. The
amount of antimatter produced from this decays must only be within 0.1%
but the decay varies by 0.8%. this creates a significant imbalance
between matter and antimatter that may explain why our universe is
composed of matter and devoid of antimatter. The other discovery
came from a nanowire in a Dutch laboratory. The team led by Leo
Kuowenhoven spotted the first evidence of Majorana particles—particles
proposed by Ettore Majorana about 70 years ago. Here are New Scientist reports: Their
Majorana particles are not free agents of the sort that might wander
into a particle detector on their own, but collective excitations of
electrons and "hole” states – absences of electrons – within nanoscale
wires made of the semiconductor indium antimonide. Kouwenhoven and his
team saw a suggestive blip in the spectrum of energies in the nanowire
consistent with the formation of an object of precisely zero energy –
exactly the signature that a pair of Majorana fermions would be expected
to produce. The clincher came when the team applied a magnetic field
to the nanowire. Had the signal come from anything else but a Majorana
pair, its energy would have changed in response to the field. But it
didn’t.
This finding can be used to form qubits.
Ordinary bits perform one calculation at a time while qubits allow
different calculations to be performed simultaneously. Source: io9 |