The positron is definitely spin-left, but that is equivalent to being in a superposition spin-up and spin-down state.
What is quantum entanglement? Part 4: relativity and entanglement
What is quantum entanglement? Part 4: relativity and entanglement
The positron is definitely spin-left, but that is equivalent to being in a superposition spin-up and spin-down state.
Skulls in the Stars 
