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14. Limitations of Quantum Computers

  • 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 explores the fundamental limitations of quantum computers, rooted in quantum physics. It delves into the no-cloning and no-deletion theorems, which restrict the copying and erasing of quantum states. The text also discusses the challenges of performing non-unitary and nonlinear operations, the post-selection problem, and the difficulties of input/output operations. Despite these limitations, quantum computers offer unique advantages for specific scientific and engineering problems, such as quantum simulation and certain classes of Hamiltonians. The chapter highlights the importance of being mindful of no-go theorems when developing quantum algorithms and provides examples of modified algorithms that achieve exponential speedup. It concludes by emphasizing the potential of quantum computers to make an impact on scientific computation and engineering problems, despite the no-fast-forwarding theorem.
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previous chapter Access Models and Data Representation
next chapter Simon’s, Deutsch–Jozsa, and Bernstein–Vazirani Algorithms
Title
Limitations of Quantum Computers
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_14
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