About: Uncomputation

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Uncomputation is a technique, used in reversible circuits, for cleaning up temporary effects on ancilla bits so that they can be re-used. Uncomputation is a fundamental step in quantum computing algorithms. Whether or not intermediate effects have been uncomputed affects how states interfere with each other when measuring results.

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  • Uncomputation is a technique, used in reversible circuits, for cleaning up temporary effects on ancilla bits so that they can be re-used. Uncomputation is a fundamental step in quantum computing algorithms. Whether or not intermediate effects have been uncomputed affects how states interfere with each other when measuring results. The process is primarily motivated by the principle of implicit measurement., which states that discarding a register during computation is physically equivalent to measuring it. Failure to uncompute garbage registers can have unintentional consequences. For example, if we take the state where and are garbage registers. Then, if we do not apply any further operations to those registers, according to the principle of implicit measurement, the entangled state has been measured, resulting in a collapse to either or with probability . What makes this undesirable is that wave-function collapse occurs before the program terminates, and thus may not yield the expected result. (en)
  • Обратное вычисление — это метод, используемый в обратимых схемах для очистки временных эффектов на битах анциллах для их повторного использования. Обратные вычисления важны для квантовых вычислений (которые должны быть обратимыми до момента измерения результата). Обратные вычисления промежуточных эффектов позволяют учитывать влияние состояний при измерении результата. (ru)
  • 非计算是一种用于可逆电路的技术,用于清除上的临时副作用,以便可以重复使用它们。 非计算对于量子计算很重要。中间效应是否尚未计算会影响状态在测量结果时如何相互干扰。 (zh)
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  • Обратное вычисление — это метод, используемый в обратимых схемах для очистки временных эффектов на битах анциллах для их повторного использования. Обратные вычисления важны для квантовых вычислений (которые должны быть обратимыми до момента измерения результата). Обратные вычисления промежуточных эффектов позволяют учитывать влияние состояний при измерении результата. (ru)
  • 非计算是一种用于可逆电路的技术,用于清除上的临时副作用,以便可以重复使用它们。 非计算对于量子计算很重要。中间效应是否尚未计算会影响状态在测量结果时如何相互干扰。 (zh)
  • Uncomputation is a technique, used in reversible circuits, for cleaning up temporary effects on ancilla bits so that they can be re-used. Uncomputation is a fundamental step in quantum computing algorithms. Whether or not intermediate effects have been uncomputed affects how states interfere with each other when measuring results. (en)
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  • Обратное вычисление (ru)
  • Uncomputation (en)
  • 非计算 (zh)
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