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Updated: Nov 27, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Coherence Depletion in Quantum Algorithms.

Ye-Chao Liu1, Jiangwei Shang1, Xiangdong Zhang1

  • 1Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, China.

Entropy (Basel, Switzerland)
|December 3, 2020
PubMed
Summary
This summary is machine-generated.

Quantum coherence depletion is a shared characteristic across various quantum algorithms, including Grover's, Deutsch-Jozsa, and Shor's. This finding suggests coherence depletion can guide the development of future quantum computing algorithms.

Keywords:
quantum algorithmquantum coherenceresource theory

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Area of Science:

  • Quantum Computing
  • Quantum Information Theory

Background:

  • Quantum algorithms offer superior efficiency over classical methods but often lack common features.
  • Existing quantum algorithms are largely task-specific, hindering the identification of universal operational principles.

Purpose of the Study:

  • To identify a common phenomenon across different quantum algorithms.
  • To investigate the role of quantum coherence in the execution of quantum algorithms.

Main Methods:

  • Analysis of quantum coherence in Grover's, Deutsch-Jozsa, and Shor's algorithms.
  • Comparison of coherence depletion with other quantum measures like entanglement.

Main Results:

  • Quantum coherence significantly depletes during the successful execution of investigated quantum algorithms.
  • This depletion is a common feature, unlike measures such as quantum entanglement.
  • Coherence reduction is minimal upon successful process completion.

Conclusions:

  • Coherence depletion is a universal characteristic of quantum algorithms studied.
  • This shared feature can serve as a foundational element for designing novel quantum algorithms.
  • Future quantum algorithm design can leverage the predictable depletion of quantum coherence.