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QUATUM COMPUTERS

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Quantum computers are cutting-edge machines that leverage the principles of quantum mechanics to perform computations at unprecedented speeds. Unlike classical computers that use bits, quantum computers use qubits, which can exist in multiple states simultaneously thanks to superposition. This enab...

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  • May 29, 2024
  • 15
  • 2023/2024
  • Class notes
  • Aaronson, s. (2013). the computational complexity
  • All classes
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Quantum Computers, Explained
With Quantum Physics


Theoretical Quantum Computing and Its
Foundation: Quantum Mechanics
Quantum Computer Elements: Qubits and
Superposition
Qubits

 The fundamental unit of quantum information, as
opposed to classical computing's bits.
 Qubits can exist in a superposition of states, allowing for
parallel computation.
Superposition

 A key principle of quantum mechanics, where a quantum
system can exist in multiple states simultaneously.
 Enables qubits to represent a 0 and 1 at the same time,
harnessing the power of parallelism.
Entanglement and Its Impact on Quantum
Computing
Entanglement

 A unique quantum phenomenon where two or more
particles become interconnected, and measuring one
instantly affects the other, regardless of distance.
 Facilitates advanced quantum operations, like quantum
teleportation and quantum error correction.

, Amplitudes and Interference in Quantum
Computing
Amplitudes

 Quantum states have amplitudes, which are complex
numbers determining the probability of measuring a
specific state.
 Interference between amplitudes can lead to
constructive or destructive effects, resulting in
probabilistic outcomes for quantum computations.
Quantum Computing and Its Potential
Future Applications
Potential Applications

 Factoring large numbers (Shor's algorithm)
 Searching unsorted databases (Grover's algorithm)
 Simulating quantum systems (quantum chemistry and
materials science)
 Optimization problems and machine learning
 Cryptography and secure communication
Quantum Algorithms and Their Use in
Problem Solving
Quantum Algorithms

 Specialized algorithms designed to take advantage of
the principles of quantum mechanics.
 Offer potential speedups compared to classical
algorithms in specific problem domains.

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