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Quantum Measurement Simulator

Quantum Measurement Simulator computes and visualizes probabilities of qubit measurement outcomes in superposition, simulating multiple measurements for quantum studies.

Formulas Used in Quantum Measurement Simulator

The simulator uses the following formulas for a single qubit measurement:

Qubit State:

\\[ |\psi\rangle = \alpha |0\rangle + \beta |1\rangle \\]

Normalization:

\\[ |\alpha|^2 + |\beta|^2 = 1 \\]

Measurement Probabilities:

\\[ P_{|0\rangle} = |\alpha|^2 = \alpha_{\text{real}}^2 + \alpha_{\text{imag}}^2 \\] \\[ P_{|1\rangle} = |\beta|^2 = 1 – |\alpha|^2 \\]

Where:

  • \\( \alpha \\): Complex amplitude of |0⟩
  • \\( \beta \\): Complex amplitude of |1⟩
  • \\( P_{|0\rangle} \\): Probability of measuring |0⟩
  • \\( P_{|1\rangle} \\): Probability of measuring |1⟩

Example Calculations

Example 1: Equal Superposition

Input: α Real = 0.707, α Imag = 0, Number of Measurements = 1000

\\[ |\alpha|^2 = 0.707^2 \approx 0.5 \\] \\[ P_{|0\rangle} = 0.5, \quad P_{|1\rangle} = 1 – 0.5 = 0.5 \\]

Simulated 1000 measurements: ~500 |0⟩, ~500 |1⟩

Result: P_{|0\rangle} = 0.5, P_{|1\rangle} = 0.5, Counts ~ [500, 500]

Example 2: Biased State

Input: α Real = 0.894, α Imag = 0, Number of Measurements = 1000

\\[ |\alpha|^2 = 0.894^2 \approx 0.8 \\] \\[ P_{|0\rangle} = 0.8, \quad P_{|1\rangle} = 1 – 0.8 = 0.2 \\]

Simulated 1000 measurements: ~800 |0⟩, ~200 |1⟩

Result: P_{|0\rangle} = 0.8, P_{|1\rangle} = 0.2, Counts ~ [800, 200]

Example 3: Large Number of Measurements

Input: α Real = 0.707, α Imag = 0, Number of Measurements = 10000

\\[ |\alpha|^2 = 0.707^2 \approx 0.5 \\] \\[ P_{|0\rangle} = 0.5, \quad P_{|1\rangle} = 1 – 0.5 = 0.5 \\]

Simulated 10000 measurements: ~5000 |0⟩, ~5000 |1⟩

Result: P_{|0\rangle} = 0.5, P_{|1\rangle} = 0.5, Counts ~ [5000, 5000]

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