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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).
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Rapid Assembly of Multi-Gene Constructs using Modular Golden Gate Cloning
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Channel cloning by multi-mode phase-sensitive parametric mixer.

Lan Liu, Andreas O J Wiberg, Bill P-P Kuo

    Optics Express
    |January 16, 2019
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates a new method for high-fidelity channel cloning, achieving 17 signal copies with a low noise figure (NF). This advancement overcomes limitations of previous cloning techniques for advanced signal processing.

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    Area of Science:

    • Optical communications
    • Quantum information science
    • Signal processing

    Background:

    • Existing channel cloning methods face limitations such as external seeding requirements or restricted channel counts and signal-to-noise ratios.
    • Single-channel replication noise figures (NF) exceed the 3-dB limit, and multi-channel replication using parametric mixers has a theoretical NF limit of 6-dB.

    Purpose of the Study:

    • To develop a novel architecture for high-fidelity channel replication with negligible excess noise and distortion.
    • To enable large-channel-count cloning crucial for rate scaling in generalized signal processing.

    Main Methods:

    • Proposed multi-stage, dispersion-managed parametric mixers within a multi-mode phase-sensitive architecture.
    • Operated the novel mixer in a four-mode phase-sensitive architecture for channel cloning.

    Main Results:

    • Successfully implemented and demonstrated 17-copy-count channel cloning.
    • Achieved a maximum noise figure (NF) below 6-dB.
    • Attained a record-low NF of 2-dB.

    Conclusions:

    • The proposed multi-stage, dispersion-managed parametric mixers offer a significant advancement in channel cloning technology.
    • This method overcomes the limitations of conventional architectures, enabling high-fidelity, large-channel-count signal replication.