Systems with indefinite causal order must be nonlocal in space–time
Read article: No-go theorem illuminates how quantum processes are constrained by classical causality
Whether she’s researching quantum materials or leading her school, Nadya Mason uses her physics skills to tackle every challenge that comes her way
Read article: Ask me anything: Nadya Mason ‘I find myself looking at everything as systems of equations’
Decade-old prediction confirmed using orbital angular momentum states of light
Read article: Quantum uncertainty and wave–particle duality are equivalent, experiment shows
Calculations suggest sub-femtosecond resolution is possible
Read article: Ultrafast electron entanglement could be studied using helium photoemission
Experiment could involve sending tiny diamonds through interferometers
Read article: Objects with embedded spins could test whether quantum measurement affects gravity
Entanglement and magic interact in ways that impact quantum algorithms and physical systems
Read article: Physicists reveal the role of ‘magic’ in quantum computational power
For large-scale systems, classical oscillators are more energy-efficient, say theorists
Read article: Quantum oscillators fall in synch even when classical ones don’t – but at a cost
Measurements of the Leggett-Garg inequality using neutron interferometry emphasize that no classical macroscopic theory can describe reality
Read article: Our world (still) cannot be anything but quantum, say physicists
Jim Baggott reviews Escape from Shadow Physics: the Quest to End the Dark Ages of Quantum Theory by Adam Forrest Kay
Read article: Paradigm shifts: positivism, realism and the fight against apathy in the quantum revolution
New model could explain a 50-year-old conundrum involving the Bekenstein-Hawking formula
Read article: Quantum mechanical wormholes fill gaps in black hole entropy
