Semiconductor Squid Flux Sensitivity Calculator
Extract actual local SQUID flux responsivity and independent noise referred through fitted slope; not arbitrary voltage ratio or flux quantum inference.
Description
SQUID input-referred flux noise divides output-voltage noise by measured flux responsivity.
SQUID input-referred flux noise divides output-voltage noise by measured flux responsivity.1
A fitted local branch slope retains the sign of transfer while its magnitude sets the noise conversion.
When to use Semiconductor Squid Flux Sensitivity Calculator
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
How to use Semiconductor Squid Flux Sensitivity Calculator and understand its results
- Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
- Enter observedSquidFluxUnits, observedSquidOutputVolts, observedOutputNoiseVoltsPerSqrtHz, following the field table and rules below, then run the tool.
- Read measuredSquidTransferVoltsPerFluxUnit, inputReferredFluxNoiseUnitsPerSqrtHz. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedSquidFluxUnits | Observed SQUID flux units | list of number | Required |
| observedSquidOutputVolts | Observed SQUID output volts | list of number | Required |
| observedOutputNoiseVoltsPerSqrtHz | Observed output noise volts per sqrt hz | number | Required |
Use at least two aligned flux and voltage observations with distinct flux coordinates, plus nonnegative output noise in volts per square-root hertz. Fit voltage versus flux; reject zero slope. Return slope and output noise divided by its absolute value in flux units per square-root hertz.
inputNoise=outputNoise/|OLSslope(flux,voltage)| Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| measuredSquidTransferVoltsPerFluxUnit | Measured SQUID transfer volts per flux unit | number |
| inputReferredFluxNoiseUnitsPerSqrtHz | Input referred flux noise units per sqrt hz | number |
{
"input": {
"observedSquidFluxUnits": [
0,
1,
2
],
"observedSquidOutputVolts": [
0,
2,
4
],
"observedOutputNoiseVoltsPerSqrtHz": 0.1
},
"output": {
"measuredSquidTransferVoltsPerFluxUnit": 2,
"inputReferredFluxNoiseUnitsPerSqrtHz": 0.05
}
}Limitations and assumptions
Matched measurement branch, material state, calibration, and conventions must be independently established. Results do not certify device performance or operating conditions.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Evidence arrays must be dense, with no missing cells. Numeric observation lists allow at most 10,000 entries, subject to any smaller bounds stated above.
Alternative or Complementary methods
For a related review, use Semiconductor Transmon Qubit Frequency Calculator: A transmon frequency approximation uses Josephson and charging energies in a regime where their ratio is large. The asymptotic expression estimates the 0-to-1 transition instead of diagonalizing the full Hamiltonian. For a complementary step, use Semiconductor Si Spin Qubit Decoherence T2 Calculator: An exponential spin-echo envelope gives an apparent T₂ when fitted in logarithmic response space. That fit is distinct from a Ramsey T₂* estimate or a stretched-exponential model.
References
Similar or alternative tools
- Semiconductor Transmon Qubit Frequency Calculator
A transmon frequency approximation uses Josephson and charging energies in a regime where their ratio is large. The asymptotic expression estimates the 0-to-1 transition instead of diagonalizing the full Hamiltonian.
- Semiconductor Si Spin Qubit Decoherence T2 Calculator
An exponential spin-echo envelope gives an apparent T₂ when fitted in logarithmic response space. That fit is distinct from a Ramsey T₂* estimate or a stretched-exponential model.