Int J Performability Eng ›› 2025, Vol. 21 ›› Issue (12): 705-713.doi: 10.23940/ijpe.25.12.p4.705713

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Implementation of 5-Qubit Quantum Search Algorithm with Analysis of Complexity and Scalability

Ashish Bhatt*, Sumit Chaudhary, and Rashmi Kuksal   

  1. Uttaranchal Institute of Technology, Uttaranchal University, Uttarakhand, India
  • Submitted on ; Revised on ; Accepted on
  • Contact: * E-mail address: ashishbhatt@uumail.in

Abstract: This publication shows the use of the quantum search algorithm by Grover to search unstructured data with a 5-qubit model in Qiskit. It is quadratically more likely to detect the correct state than in classical methods; the algorithm is more efficient in search. Simulated implementation demonstrates practically perfect amplification of the target state, whereas real IBM quantum hardware reveals the reality of practical issues of noise and gate errors. The results strengthen the possibility of quantum search methods on large unstructured data, and the possibility to reduce errors and scale protocols to better circuit designs.

Key words: quantum computing, Grover’s algorithm, unstructured data retrieval, Qiskit, quantum search, NISQ devices