Topic: Physics

Researchers at TU Wien found quantum entanglement in a crystal large enough to hold. They used a technique called quantum Fisher information to detect this strange phenomenon.

Quantum phenomena are usually seen in tiny objects like atoms and photons. But can these effects also exist in bigger objects that we can see and touch? A team of researchers at TU Wien wanted to find out.

They studied a crystal made from a special type of metal called a strange metal. This material has unusual properties that scientists don't fully understand yet. The team used a technique called quantum Fisher information to detect quantum entanglement in the crystal.

Quantum entanglement is when particles are connected in such a way that what happens to one particle affects the others, even if they're really far apart. It's like an anthill where all the ants respond together when something disturbs them. The researchers wanted to see if the particles inside the crystal behaved in a similar way.

The team created a crystal made from cerium, palladium, and silicon. They then fired neutrons at the crystal and measured its response using quantum Fisher information. This technique helps scientists detect how strongly a system responds to changes. If the system is entangled, it will react more dramatically than if the particles were independent.

The researchers found that the crystal showed collective quantum behavior, meaning that groups of at least nine particles inside the crystal were connected in an entangled way.

Why It Matters

This discovery helps us understand how quantum mechanics works on a larger scale. It also shows us new ways to measure and detect quantum entanglement, which is important for developing new technologies like super-fast computers and secure communication systems.

Key Facts

• Researchers at TU Wien found quantum entanglement in a crystal large enough to hold.
• The team used a technique called quantum Fisher information to detect this phenomenon.
• Quantum entanglement was detected in groups of at least nine particles inside the crystal.
• The researchers created a crystal made from cerium, palladium, and silicon using a process called inelastic neutron scattering.
• This discovery helps us understand how quantum mechanics works on a larger scale.

Key Terms

Quantum Entanglement

When particles are connected in such a way that what happens to one particle affects the others, even if they're really far apart.

Strange Metal

A type of material with unusual properties that scientists don't fully understand yet.

Quantum Fisher Information

A technique used to detect how strongly a system responds to changes, which can help scientists detect quantum entanglement.

Implications

This discovery helps us understand how quantum mechanics works on a larger scale. It also shows us new ways to measure and detect quantum entanglement, which is important for developing new technologies like super-fast computers and secure communication systems.