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In Chap. 2 , we represented “0” by an electron in a lower energy level (ground state) and “1” by an electron in an excited state. Another method of implementing quantum computing is by using the spin of electrons or protons to represent 0 and 1. For example, we can represent spin “down” as 0 and spin “up” as 1 (or vice versa), and we can have superpositions of these two spin states (Fig. 3.1). In this chapter, spin will be examined in more detail.

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Spin

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  • 发表日期：

    2026年

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  • Ray LaPierre

摘要

In Chap. 2 , we represented “0” by an electron in a lower energy level (ground state) and “1” by an electron in an excited state. Another method of implementing quantum computing is by using the spin of electrons or protons to represent 0 and 1. For example, we can represent spin “down” as 0 and spin “up” as 1 (or vice versa), and we can have superpositions of these two spin states (Fig. 3.1). In this chapter, spin will be examined in more detail.