Quantum Measurement Calculator
Calculate quantum measurement probabilities, expectation values, variance, and wave function collapse.
Inputs
Results
Outcome 1 Probability
50%
Outcome 2 Probability
50%
Expectation Value
0
Variance1
Standard Deviation1
Measurement Fidelity0.5
Outcome 1 Probability
50%
Outcome 2 Probability
50%
Expectation Value
0
How to Use This Calculator
- Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
- State 1 Amplitude — Amplitude for first quantum state Accepts values from -1 to 1 (default: 0.707).
- State 2 Amplitude — Amplitude for second quantum state Accepts values from -1 to 1 (default: 0.707).
- Measurement Basis — Measurement basis Choose from: Computational Basis, Hadamard Basis. default: 0.
- Once all inputs are set, review your results in the Results panel. Here's what each output means:
- Outcome 1 Probability — shown as a percentage. This is the primary result of this calculator.
- Outcome 2 Probability — shown as a percentage. This is the primary result of this calculator.
- Expectation Value — shown as a numeric value. This is the primary result of this calculator.
- Variance — shown as a numeric value.
- Standard Deviation — shown as a numeric value.
- Measurement Fidelity — shown as a numeric value.
- Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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Formula
P(outcome) = |⟨outcome|ψ⟩|²Related Calculators
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