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Quantum Error Correction

Quantum Error Correction. Daniel Gottesman Perimeter Institute. Now we will review some fundamental ideas to create codes. Barriers to Quantum Error Correction. 1. Measurement of error destroys superpositions. 2. No-cloning theorem prevents repetition.

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Quantum Error Correction

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  1. Quantum Error Correction • Daniel Gottesman • Perimeter Institute

  2. Now we will review some fundamental ideas to create codes

  3. Barriers to Quantum ErrorCorrection • 1. Measurement of error destroys superpositions. • 2. No-cloning theorem prevents repetition. • 3. Must correct multiple types of errors (e.g., bit flip and phase errors). • 4. How can we correct continuous errors and decoherence?

  4. Measurementdestroys Superpositions?

  5. Main good intuition

  6. Correcting All Single-Qubit Errors

  7. These main principles can be now applied to create new codes

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