How do impulse on/off convert to 1/0 numbers in computers?

The next frontier is quantum computing in which states are superposed and entangled with the other states. It gives me thinky pain.
But when they finally give you the tools to use, you're gonna come up with some wicked awesome shit and we're here for it.
 
I think the OP wants to know physically how the 0 or 1 is stored. I’ll bite.
Assume 0 is reading 0 volts and 1 is reading some supply voltage like 1.8V. A basic circuit that can store this information while power is on is called a flip flop. It consists of CMOS transistors that can be in one one of two states. Assume you could measure the output of this flip flop and you’d read 0V or 1.8V which corresponds to a 0 or 1.
 
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