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Decoy-State QKD Single-Photon Yield & Gain Calculator

Easily calculate and compute decoy-state qkd single-photon yield & gain calculator with accurate equations, live formulas, and expert guidance.

Mean photon number of signal laser pulse.

Mean photon number of weak decoy state.

Total detection rate per signal pulse.

Total detection rate per decoy pulse.

Calculated Result
0.04

Single-Photon Yield (Y₁)

Single-Photon Yield (Y₁)

0.04

Single Photon Yield Y1

0.03599

Single Photon Gain Q1

0.01091

Dark Count Yield Y0

0

Single Photon Fraction In Signal

72.8

0.04

Calculation Breakdown

  1. Applied FormulaBounds single-photon yield Y1 and gain Q1 in decoy-state QKD to neutralize photon-number-splitting (PNS) attacks on weak coherent laser sources.Q_1 = Y_1 \mu e^{-\mu}, \quad Q_\mu = Y_0 + 1 - e^{-\eta\mu}

Decoy-State QKD Gain Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.30.50.81.0Single-Photon Yield (Y₁)

What Is the Decoy-State QKD Single-Photon Yield & Gain Calculator?

This tool computes decoy-state qkd single-photon yield & gain calculator with high precision arithmetic.

How Does the Decoy-State QKD Single-Photon Yield & Gain Calculator Work?

Bounds single-photon yield Y1 and gain Q1 in decoy-state QKD to neutralize photon-number-splitting (PNS) attacks on weak coherent laser sources.

Decoy-State QKD Single-Photon Yield & Gain Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Q1=Y1μe−μ,Qμ=Y0+1−e−ημQ_1 = Y_1 \mu e^{-\mu}, \quad Q_\mu = Y_0 + 1 - e^{-\eta\mu}

Bounds single-photon yield Y1 and gain Q1 in decoy-state QKD to neutralize photon-number-splitting (PNS) attacks on weak coherent laser sources.

How to Use the Decoy-State QKD Single-Photon Yield & Gain Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Decoy-State QKD Single-Photon Yield & Gain Calculator Example

Input Values:

signalPulseIntensityMu:0.50
decoyPulseIntensityNu:0.10
overallSignalGainQMu:0.015
overallDecoyGainQNu:0.0035
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required Single-Photon Yield (Y₁).

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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