# Bose-Einstein condensate and ions spin

• jumpjack
In summary, the topic being discussed is about the rotation of ions in a Bose-Einstein condensate, with a suggested rotation speed of 10^15 rpm. However, it is unclear if ions actually have a spin or if they are spinning on their axis. Further information on particle spin can be found on Wikipedia.
jumpjack
Is it that correct to say that ions ina B-E condensate rotate at around 10^15 rpm? (don't know the exact english term for this, sorry).

jumpjack said:
Is it that correct to say that ions ina B-E condensate rotate at around 10^15 rpm? (don't know the exact english term for this, sorry).

I have no idea what you are even asking about, but as written, I think it is safe to say that statement is incorrect.

does an ion have a spin?

jumpjack said:
does an ion have a spin?

It might. But having spin doesn't mean its spinning on its axis. Particle spin is only named that because it acts as if it were spinning on its axis in a few ways. (in other ways, it doesn't)

that's very cryptic, where could I find some info on this topic?

## 1. What is a Bose-Einstein condensate?

A Bose-Einstein condensate is a state of matter that occurs when a group of bosons, which are particles with integer spin, are cooled to a very low temperature and occupy the same quantum state. This results in all particles behaving as one collective entity, exhibiting unique properties such as superfluidity and coherence.

## 2. How is a Bose-Einstein condensate created?

A Bose-Einstein condensate is created by cooling a gas of bosons to a temperature close to absolute zero, typically using laser cooling techniques. As the temperature decreases, more and more bosons occupy the lowest energy state, until they all occupy the same state and form the condensate.

## 3. What is the significance of Bose-Einstein condensates in physics?

Bose-Einstein condensates have been a subject of intense research since their first experimental realization in 1995. They provide a unique system to study quantum phenomena on a macroscopic scale and have potential applications in various fields such as quantum computing and precision measurements.

## 4. What is the role of ions spin in Bose-Einstein condensates?

Ions, which have half-integer spin, can also be used to create a Bose-Einstein condensate. In this case, the spin of the ions is used to cool and trap them, allowing for the formation of a condensate. Additionally, the spin of ions can be manipulated through external fields, making them useful for studying quantum spin dynamics.

## 5. How are Bose-Einstein condensates and ions spin related to quantum entanglement?

Bose-Einstein condensates and ions spin have been used to demonstrate quantum entanglement, which is a phenomenon where two or more particles become correlated in a way that their quantum states are dependent on each other. This has important implications for quantum information processing and communication.

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