Quantum Physics
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Quantum PhysicsGalileo’s famous gravity experiment holds up, even with individual atoms
When dropped, two types of atoms accelerate at the same rate despite their differences, much like objects in Galileo’s leaning Tower of Pisa experiment.
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Quantum PhysicsA measurement of positronium’s energy levels confounds scientists
A gap in the energy levels of positronium seems to be substantially larger than predicted, and physicists don’t know why.
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Quantum PhysicsTo live up to the hype, quantum computers must repair their error problems
Before quantum computers can reach their potential, scientists will need to master quantum error correction.
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Quantum PhysicsThis weird quantum state of matter was made in orbit for the first time
Bose-Einstein condensates made on the International Space Station could reach temperatures lower than any known in the universe.
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Quantum PhysicsPhysicists exploit a quantum rule to create a new kind of crystal
Cold atoms can form crystals as a result of the Pauli exclusion principle.
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PhysicsA newfound superconducting current travels only along a material’s edge
In a first, scientists spot electricity flowing without resistance on the rim of a topological superconductor.
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Quantum PhysicsNew quantum computers can operate at higher temperatures
Silicon chips operate at higher temperatures than many others, raising hopes for building quantum integrated circuits.
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Quantum PhysicsQuantum mechanics means some black hole orbits are impossible to predict
Computer simulations reveal that foreseeing the paths of three orbiting objects sometimes requires precision better than the quantum limit.
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Quantum PhysicsScientists entangled quantum memories linked over long distances
The entanglement of quantum ‘hard drives’ is a crucial step toward creating a quantum internet.
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PhysicsScientists cooled a nanoparticle to the quantum limit
Physicists decreased a nanoparticle’s motion to the lowest level allowed by quantum mechanics.
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PhysicsA quantum strategy could verify the solutions to unsolvable problems — in theory
A quantum technique for verifying solutions to difficult problems could apply to an “unbelievably huge” class of puzzles.
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Quantum PhysicsGoogle claimed quantum supremacy in 2019 — and sparked controversy
Google’s quantum computer outperformed the most powerful supercomputer on a task, the company reported. But some scientists aren’t fully convinced.