What is the quantum phase estimation algorithm?

Quantum Computing Basics Questions



78 Short 39 Medium 47 Long Answer Questions Question Index

What is the quantum phase estimation algorithm?

The quantum phase estimation algorithm is a quantum algorithm used to estimate the phase of an eigenstate of a unitary operator. It is commonly used in quantum computing for tasks such as factoring large numbers and solving the discrete logarithm problem, which are crucial for breaking classical encryption algorithms. The algorithm utilizes the principles of quantum superposition and interference to provide an exponential speedup compared to classical algorithms for certain problems.