# Questions tagged [grovers-algorithm]

Grover's search algorithm is an algorithm that can perform a search in the order of square root of the input size. This is a provable speed up over the best classical algorithm, which requires a time of order N to perform a search.

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### An unexpected result of the Implementation of a finding minimum values algorithm using a qRAM

Motivated by the article Quantum algorithm for finding minimum values in a Quantum Random Access Memory, I'm training to implement a simplified version of the proposed algorithm. But the output isn't ...
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### Please teach the construction law of oracle $U_f$ in Grover’s algorithm

The framework of Grover's algorithm is shown in Figure from Qiskit. https://learn.qiskit.org/course/ch-algorithms/grovers-algorithm But I didn't understand the tutorial's construction rules for $U_f$. ...
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### Using Classiq for Grover Search

I am participating Classiq Bootcamp, First lesson here, and I need to implement Grover Search in a specific result that satisfies few constrains: The circuit should encompass a minimum of two Grover ...
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1 vote
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### Grover's algorithm for complex phases

Grover's algorithm traditionally inputs a phase oracle, $U_\omega$ such that $U_\omega | x \rangle = (-1)^{f(x)} | x \rangle$. The task is to find some $x$ such that $f(x) = 1$. In other words, the ...
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### Grover's algorithm for max cut problem - Implementation in cirq

I am using the Grover's algorithm for max cut problem using an oracle for the graph described below to check whether it admits a valid 2-coloring. Here are the edges: (0,3),(0,4),(1,3),(1,4),(2,3),(2,...
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### Marking a specific quantum state in the oracle function in the Grover's algorithm

I have a simple implementation of Grover's algorithm. As depicted in the results, the oracle function marks the state |111>. How can I change the Oracle function to mark |010>? ...
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### In Grover's algorithm for database search, how are non-queried fields handled?

I've read a lot about the Grover algorithm, and even got beyond the point of understanding the "magic" beyond the oracle function. What is yet unclear to me is, given an oracle function ...
1 vote
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### Superposition of states, finding the "maximum" one

I designed a circuit (under Anaconda/Jupyter/Qiskit) whose output is a superposition of states of n qubits, q(0), ...q(n-1). For most of them q(n-1) is |0>, and for a few |1>. I'd like to ...
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### Grover with 3 qubits [duplicate]

Could someone please post a screenshot or a link for Grover's algorithm with 3 qubits with an oracle tuned for the solution at 101 ?
1 vote
Let initial quantum state be $|s\rangle = a|0\rangle|d_a\rangle + b|1\rangle|d_b\rangle$. I know value of amplitude $a$, but I do not know $|d_a\rangle$ and $|d_b\rangle$. These unknown states can be ...