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相关概念视频

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Reproductive cloning is the process of producing a genetically identical copy—a clone—of an entire organism. While clones can be produced by splitting an early embryo—similar to what happens naturally with identical twins—cloning of adult animals is usually done by a process called somatic cell nuclear transfer (SCNT).
Somatic Cell Nuclear Transfer
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The first successfully cloned mammal was Dolly, a sheep, born on 5th July 1996 at Roslin Institute, Scotland. The cloned sheep was named after the American singer Dolly Parton. Dolly lived for seven years and died of respiratory complications, which is speculated to be due to the actual age of her DNA. Because the DNA in cloned cells belongs to an older individual,  the cloned individual’s life expectancy may be affected. Indeed, analysis of Dolly’s DNA revealed shorter...
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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
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Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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调查不完美的克隆以扩大量子通信能力

Masab Iqbal1, Luis Velasco1, Nelson Costa2

  • 1Advanced Broadband Communications Center (CCABA), Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, Spain.

Sensors (Basel, Switzerland)
|September 28, 2023
PubMed
概括
此摘要是机器生成的。

不完美的量子副本可以实现可靠的量子比特转发和点对多点量子通信. 拟议的量子自动重复请求 (QARQ) 协议显示了改进的量子比特恢复,性能优于直接传输和远程传输.

关键词:
量子自动重复请求要求不完美的克隆是不完美的.从点到多点的量子通信.

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科学领域:

  • 量子信息科学 量子信息科学
  • 量子通信协议 量子通信协议
  • 量子计算应用 量子计算应用

背景情况:

  • 不克隆定理限制了某些量子通信范式,如量子比特转发和点对多点量子通信 (QP2MP).
  • 全面量子复制机 (UQCM) 产生不完美的量子比特拷贝,可能克服这些局限性.

研究的目的:

  • 调查UQCMs对于启用量子比特转发和QP2MP的实用性.
  • 提出和分析量子自动重复请求 (QARQ) 协议,以实现可靠的量子通信.
  • 使用不同的量子技术在现实的噪声条件下评估协议性能.

主要方法:

  • 提出了量子自动重复请求 (QARQ) 协议,调整了它的经典对应.
  • 使用不完美的量子克隆研究了QP2MP通信.
  • 在各种噪音源下使用空隙 (NV) 中心的模拟协议.
  • 直接传输 (DT),远程传输 (TP) 和远程克隆 (TC) 量子技术的比较.

主要成果:

  • 与TP和DT相比,远程克隆 (TC) 在QARQ和QP2MP中表现出更高的忠实性.
  • 在QARQ协议显著提高量子比特恢复.
  • 增加克隆并不能在QARQ协议中持续改善量子位恢复.
  • 尽管TC具有性能优势,但其量子成本更高.

结论:

  • UQCMs和QARQ协议可以促进以前不可能的量子通信范式.
  • 选择量子技术 (DT,TP,TC) 会影响协议的可靠性和复杂性.
  • 这些协议的进一步开发可以推进分布式量子计算应用.