Quantum effect in diamonds

Physikalisches Institute of Stuttgart University created the entangled quantum states in diamonds, meaning that there is finally a diamond that people care about - diamonds that could one day be inside a quantum computer working at room temperature, a feat so far considered impossible for other materials.

While physicists have long described the atomic world by quantum mechanics, one of its most bizarre properties, and properties that cannot be described easily, allow the connection of two objects without any remarkable interaction in a distance.

Einstein called this 'strange interaction'

One of the most impressive experiments based on this unusual tangle is quantum teleportation, in which the properties of a quantum object are transferred to another object in a distant position. .

But this effect is very sensitive to any interference so physicists have to work under extreme conditions such as temperatures close to absolute zero to 'stick' quantum objects.

One percent of those carbon atoms have magnetic moments, represented by a green arrow.These will be quantum bits in a hypothetical diamond-based quantum computer.(Photo: Universität Stuttgart)

According to Stuttgart scientists, it is clear that this is not necessarily the case in diamonds. In their experiments, the researchers fired nitrogen atoms into the diamond lattice at high speed. These impurities can be detected by their fluorescence and they turn diamond color into pink. Due to their unrivaled rigidity, the diamond lattice shields the nitrogen atoms and thus allows the discovery of quantum effects such as quantum entanglement under ambient conditions.

This gave Stuttgart researchers the opportunity to create the appropriate quantum state between the monoliths of the diamond lattice, carbon atoms. One percent of those carbon atoms have magnetic fields that allow them to interact with implanted nitrogen atoms in the immediate vicinity. This interaction is used to address the carbon atom that has finally been bonded.

Super-fast quantum computers use strange effects that still need to be studied, but this study could become a major milestone in the long-term research process.

Thanh Van