In a groundbreaking development, scientists have successfully created an elusive and intriguing particle, known as the anyon, by utilizing a quantum computer. This extraordinary particle stands out due to its ability to retain information about its past whereabouts.
Typically, when particles such as electrons or photons are swapped multiple times, they become indistinguishable, making it impossible to determine if the exchange occurred. However, in the 1970s, physicists discovered that certain two-dimensional quasiparticles did not follow this rule. These unique quasiparticles were later named anyons. Quasiparticles are not genuine particles; instead, they are collective vibrations that display particle-like behavior.
What sets anyons apart is that exchanging them fundamentally alters their properties, with the number of swaps influencing their vibrational patterns. One specific type, known as non-Abelian anyons, possesses the ability to remember the sequence in which they were swapped, akin to a braided rope retaining the order of its interwoven strands.
However, unlike the physical interactions of rope strands, anyons interact through the enigmatic quantum phenomenon of entanglement, where particle properties are intricately connected across space. This inherent memory, combined with the quasiparticles' quantum characteristics, renders non-Abelian anyons a promising platform for quantum computing. Until now, these anyons had never been experimentally observed.
Sources: Quanta Magazine; NewScientist
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