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Two experiments with ultracold fermionic and bosonic atoms in optical superlattices demonstrate the quantized charge transport predicted by Thouless in the 1980s.
Coherent population trapping in 'dark states', a well-known and much-used phenomenon in atomic physics, can also be observed in a superconducting qubit and a single nuclear spin in diamond.
Magnetic skyrmion lattices can be stabilized outside the narrow region where they are thermodynamically favoured by exploiting their topological protection.
High-temperature superconductivity in ultrathin films of iron selenide deposited on strontium titanate has been attributed to various exotic mechanisms. New experiments indicate that it may be conventional, with broader implications.
