The two leading techniques have been inertial confinement and magnetic confinement, involving huge magnetic fields to contain a plasma in a doughnut - shaped machine called a tokamak. (faith.org.uk)
Scientists have to overcome the thermodynamic barrier in order to achieve entanglement at macroscopic scales by cooling temperatures to near absolute zero -LRB--454 degrees Fahrenheit) and applying huge magnetic fields. (thescienceexplorer.com)
Jupiter's fast 10 - hour rotation stirs up its insides and generates a huge magnetic field that is a few million miles wide and up to hundreds of millions of miles long. (discovermagazine.com)