© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2024
V. SilvaQuantum Computing by Practice https://doi.org/10.1007/978-1-4842-9991-3_5

5. Mathematical Foundation: Time to Dust Up That Linear Algebra

Vladimir Silva1  

Matrices, complex numbers, and tensor products are the holy trinity of quantum computing. During my quantum learning curve on the mathematical background, I wondered as you may: Where is the quantum magic in all this? How can a complex number or a matrix tell me about superposition or entanglement? Where is the spookiness? My immature understanding of superposition was that a system existed in multiple states at the same time: Like the cat in the box, it is dead and alive at once. ...

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