In Netherlands. The size of the device is only 100 nanometers.
It can stock 500 Terabits per square inch.
That's 500 times better than the current SSD.
However, it requires certain conditions : -77° Kelvin (-196° Celsius). So we will have to wait before to get a such capacity.
More : http://www.nltimes.nl/2016/07/19/del...rd-drive-ever/