"To do this, the scientists turned the difficult analytical problem into an easy geometrical one. They showed that, in many cases, the amount of entanglement between states corresponds to the distance between two points on a Bloch sphere, which is basically a normal 3D sphere that physicists use to model quantum states."(adsbygoogle = window.adsbygoogle || []).push({});

Not sure I understand "we prove by a geometric argument that polynomial entanglement measures of degree 2 are independent of the choice of pure-state decomposition of a mixed state, when the latter has only one pure unentangled state in its range". What is "degree 2"?

https://phys.org/news/2016-02-physicists-easy-entanglementon-sphere.html

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# I Entanglement made easy?

Have something to add?

Draft saved
Draft deleted

Loading...

Similar Threads for Entanglement made easy |
---|

I Do macro objects get entangled? |

B Library of Babel quantum state |

B The setup of "2012 entanglement between photons that (...)" |

A Equation in a paper about Dicke states |

I Generalizing the Bell Inequality for Arbitrary Measurement Axes |

**Physics Forums | Science Articles, Homework Help, Discussion**