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Qtunnel

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Quantum Tunneling Bit Flip Experiment

QTunnel is a quantum computing experiment that demonstrates quantum tunneling and its ability to influence a classical bit.

The Experiment
A qubit representing a particle attempts to tunnel through an energy barrier to flip a target bit from 0 to 1.
In classical physics, the particle should be blocked by the barrier. In quantum mechanics, there is a probability it can “tunnel” through and change the bit state.

The project uses 3 qubits on IBM Quantum hardware:

  • One qubit acts as the tunneling particle
  • One qubit represents the target bit (the “switch”)
  • Quantum gates simulate the barrier and system evolution

Goal

Adjust the circuit parameters to maximize the probability of flipping the target bit from 0 to 1.

Results

The experiment measures the final probability distribution and displays it as a histogram, showing how much influence the tunneling effect had on the target bit.

Purpose

QTunnel explores the fundamental idea that quantum effects could one day allow interference with classical information in ways not possible with traditional computing.
A small-scale prototype for understanding future quantum security concepts.

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