Quantum Desk Calculator with Qiskit

Problem definition

The task is to build a quantum circuit that performs the difference between the binary representation of two positive integers. The circuit can be defined as a variation of the quantum adder explained in class and using the Quantum Fourier Transform. The circuit must be implemented in qiskit and demonstrated on a one or two instances. The project can be extended with the implementation of a complete desk calculator.

Implementation details

Prerequisites

• Python3.7+
• qiskit

Operations implemented:

• Addition Full Adder implementation
• Addition using QFT
• Subtraction using QFT
• Multiplication using continuous QFT sum
• Division using subtraction and addition implemented via QFT

Clone the repository

git clone https://github.com/LM095/QuantumDeskCalculator
cd QuantumDeskCalculator

Run the program

python quantumDeskCalculator.py

Example of esecution

Addition:

320 (101000000) + 150 (10010110) = 470(0111010110)

Subtraction:

1200 (10010110000) - 547 (1000100011) = 653 (001010001101)

Multiplication:

53 (110101) * 4 (100) = 212 (0011010100)

Division:

12 (1100) / 5 (0101) = 2 (0010)

Authors

• Luca Marzari - LM095
• Deborah Pintani - DebbyX3