Many devices already available are fundamentally reliant on the effects of quantum mechanics. These include laser systems, transistors and semiconductor devices, as well as other devices such as MRI imagers. The UK Defence Science and Technology Laboratory (DSTL) grouped these devices as 'quantum 1.0' to differentiate them from what it dubbed 'quantum 2.0', which it defined as a class of devices that actively create, manipulate, and read out quantum states of matter using the effects of superposition and entanglement.