Recent experiments with superconductor-quantum dot hybrids demonstrate that contact-induced level broadening and hybridization effects in thermoelectric Cooper pair splitters lead to shifted resonances and parity reversal in thermoelectric current, revealing new avenues for harnessing nonlocal quantum correlations in solid-state systems through gate voltage control.
Quasiparticles — long-lived particle-like excitations — are a cornerstone of quantum physics, with famous examples such as Cooper pairs in superconductivity and, recently, Dirac quasiparticles in graphene. Now, researchers have discovered quasiparticles in a classical system at room temperature: a two-dimensional crystal of particles driven by viscous flow in a microfluidic channel. Coupled by hydrodynamic forces, the particles form stable pairs — a first example of classical quasiparticles, revealing deep links between quantum and classical dissipative systems.
Physicists have experimentally demonstrated for the first time that there is a negative correlation between the two spins of an entangled pair of electrons from a superconductor.
A new way to combine two materials with special electrical properties — a monolayer superconductor and a topological insulator — provides the best platform to date to explore an unusual form of superconductivity called topological superconductivity. The combination could provide the basis for topological quantum computers that are more stable than their traditional counterparts.
A joint group of scientists has demonstrated that temperature difference can be used to entangle pairs of electrons in superconducting structures.