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BB84 Quantum Key Distribution: Difference between revisions
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**<math>Q_X</math> is the quantum bit error rate QBER in the <math>X</math> basis. | **<math>Q_X</math> is the quantum bit error rate QBER in the <math>X</math> basis. | ||
**<math>Q_Z</math> is the quantum bit error rate QBER in the <math>Z</math> basis estimated prior to the protocol. | **<math>Q_Z</math> is the quantum bit error rate QBER in the <math>Z</math> basis estimated prior to the protocol. | ||
**<math>H</math> is the Hadamard gate. <math>H^{0} = | **<math>H</math> is the Hadamard gate. <math>H^{0} = I, H^{1} = H</math>. | ||
**<math>\gamma</math> is the probability that Alice (Bob) prepares (measures) a qubit in the <math>X</math> basis. | **<math>\gamma</math> is the probability that Alice (Bob) prepares (measures) a qubit in the <math>X</math> basis. | ||
**<math>\epsilon_{\rm EC}</math>, <math>\epsilon'_{\rm EC}</math> are the error probabilities of the error correction protocol. | **<math>\epsilon_{\rm EC}</math>, <math>\epsilon'_{\rm EC}</math> are the error probabilities of the error correction protocol. | ||
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The parameter $\epsilon_{\rm PA}$ is the error probability of the privacy amplification subroutine and $\epsilon_{\rm PE}$ is the error probability of the parameter estimation subroutine used to estimate $Q_X$. | The parameter $\epsilon_{\rm PA}$ is the error probability of the privacy amplification subroutine and $\epsilon_{\rm PE}$ is the error probability of the parameter estimation subroutine used to estimate $Q_X$. | ||
(See [[Quantum Key Distribution]] for the precise security definition) | (See [[Quantum Key Distribution]] for the precise security definition) | ||
===Pseudo Code=== | ===Pseudo Code=== | ||
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