Hands-On Quantum Information Processing with Python by Dr. Makhamisa Senekane

Author:Dr. Makhamisa Senekane
Language: eng
Format: epub
Publisher: Packt Publishing Pvt Ltd
Published: 2021-01-29T00:00:00+00:00

Exploring the Bernstein-Vazirani algorithm

The Bernstein-Vazirani algorithm is in a sense similar to the Deutsch-Josza algorithm discussed previously. Thus, the oracle still uses the following function:

On the other hand, unlike the Deutsch-Josza algorithm, where the objective is to determine whether the given function is constant or balanced, the objective of the Bernstein-Vazirani algorithm is to find the secret string s:

Given the promise that:

The Bernstein-Vazirani algorithm works as follows. First, two registers, one the input register with n qubits and the other the output register with a single qubit, are initialized to state |0>. Thus, the state of the system is given as follows:

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