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A potentially realizable quantum computer.

S Lloyd

    Science (New York, N.Y.)
    |September 17, 1993
    PubMed
    Summary
    This summary is machine-generated.

    Arrays of weakly coupled quantum systems can function as quantum computers using precisely timed electromagnetic pulses. These systems enable superposition, coherent operations, and error correction for computation or quantum state manipulation.

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    Area of Science:

    • Quantum Computing
    • Quantum Information Science
    • Condensed Matter Physics

    Background:

    • Quantum systems offer unique computational capabilities.
    • Controlling quantum states is crucial for advanced applications.

    Purpose of the Study:

    • To explore the computational potential of weakly coupled quantum systems.
    • To demonstrate the feasibility of using pulsed electromagnetic fields for quantum control.

    Main Methods:

    • Subjecting arrays of weakly coupled quantum systems to sequences of electromagnetic pulses.
    • Implementing error correction protocols for stable computation.

    Main Results:

    • Pulsed arrays exhibit true quantum computing properties, including superposition and coherent logical operations.

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  • Dissipation is necessary solely for error correction.

    • Conclusions:

    • These pulsed quantum arrays can operate as parallel digital computers with error correction.
    • Coherent operation allows the device to act as a general-purpose quantum-mechanical micromanipulator for state creation and transformation.