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Electron spin/電子のスピン

Electron spin/電子のスピン
Hi. In this step, we are here with Professor Kohei Itoh from Keio’s Faculty of Science and Technology. Hey, nice to see you again. Thank you. Nice to see you. Tell me what is spin? Spin! Okay it’s a – spin is like a tiny magnet. Okay And so each, for example electron has, is also a tiny magnet and magnetic, direction up or down can be defined if the electron spin is placed in the magnetic field. So spin up means that it’s pointing in the direction of the field. And the spin down means the other direction. And up and down can be, you know, uh, can be regarded as 0 and 1 state or 0 or 1 state, of bit number.
So we can use the spin of an electron as our qubit, as our 0 state or 1 state. That’s our state variable. And we can also do the same thing with the spin of a nucleus? So nuclear spin or nuclear nucleus also as a spin 0 up state or 1 down state. So we can use that as well. I see, so that gives us two different kinds of state variables.



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