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The Quantum Hall Effect (QH) enables the exploitation of the quantum coherence of electrons for a wide range of applications from metrology to quantum computing. QH interferometry is a handy tool that provides an archetypal platform for achieving interwoven statistics of fractional QH states. However, the phase coherence along the interferometer and the suppression of the Coulomb filling energy are required to observe the fractional statistics. Study: Quantum Hall interferometry in the triangular domain of a marginally twisted bilayer graphene. Image Credit: Neon_dust/Shutterstock.com In an article recently published in the journal nano letter, The QH interferometer is based on a slightly twisted bilayer graphene with a twist angle (θ) of 0.16 degrees. Operation of the device in the QH regime results in unique magneto-thermopower features, including Aharonov–Bohm (AhB) and Fabry–Pérot (FP) oscillations in the magnetic-density field phase, where the Landau level fill factor (ν) is 4...

“After all his efforts on the design and finishing of the space, it feels like another beating from his legacy. You don’t see changes like this happening in old concert halls in Europe,” he said. Son Henry Hall, a creative director, said he appreciated the “complicated situation” at the Opera House, which needed to “move with time” to cater for rock, hip hop and acoustic concerts and symphonies at Concert Hall. Textured box front at the Sydney Opera House Concert Hall. Credit: Nick Moir “In the nearly 50 years it has opened, I can appreciate the acoustic requirements and functionality of the room have changed. It is designed to produce optimal symphonic acoustics. There are so many genres and styles appearing in the space today. “You do have to wonder, though if this were, say, another architect and not Peter Hall, would they dare touch it?” he says. Opera House CEO Louise Herron said the Concert Hall upgrade was developed and delivere...