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11. Superposition and Entanglement

  • 2026
  • OriginalPaper
  • Chapter
Published in:
Authors
Osama M. Raisuddin
Suvranu De
Published in
Quantum Computing for Engineers
Publisher
Springer Nature Switzerland

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Abstract

This chapter delves into two cornerstone principles of quantum computing: superposition and entanglement. Superposition allows quantum bits, or qubits, to exist in multiple states simultaneously, vastly increasing the computational power of quantum systems. The Hadamard gate is highlighted for its role in creating uniform superpositions, with practical examples demonstrating how qubits can be measured in various basis states. Entanglement, another unique quantum property, is explored through the lens of Bell states and GHZ states. The chapter explains how entangled qubits share correlated states, enabling quantum registers to access a larger Hilbert space. Practical examples, including Python code and quantum circuit diagrams, illustrate the creation and measurement of entangled states. The chapter concludes with a demonstration of how entanglement enables quantum registers to perform complex computations that are beyond the reach of classical systems.
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previous chapter Quantum Measurements and Circuits
next chapter Classical and Reversible Computation
Title
Superposition and Entanglement
Authors
Osama M. Raisuddin
Suvranu De
Copyright Year
2026
Book
Quantum Computing for Engineers

Print ISBN: 978-3-032-03324-6

Electronic ISBN: 978-3-032-03325-3

Copyright Year: 2026

DOI
https://doi.org/10.1007/978-3-032-03325-3_11
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