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Communication links for distributed quantum computation
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DOI：10.1109/TC.2007.70775.png)
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Distributed quantum computation requires quantum operations that act over a distance on error correction-encoded states of logical qubits, such as the transfer of qubits via teleportation. We evaluate the performance of several quantum error correction (QEC) codes and find that teleportation failure rates of one percent or more are tolerable when two levels of the [[ 23, 1, 7]] code are used. We present an analysis of performing QEC on QEC-encoded states that span two quantum computers, including the creation of distributed logical zeros. The transfer of the individual qubits of a logical state may be multiplexed in time or space, moving serially across a single link or in parallel across multiple links. We show that the performance and reliability penalty for using serial links is small for a broad range of physical parameters, making serial links preferable for a large, distributed quantum multicomputer when engineering difficulties are considered. Such a multicomputer will be able to factor a 1,024-bit number using Shor's algorithm with a high probability of success.
Keyword:
emerging technologies
communication/networking and information technology
computer systems organization
interconnection architectures
multiple data stream architectures (multiprocessors)
processor architectures
interconnections (subsystems)
data communications
hardware
error-checking
reliability
testing
fault tolerance
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3.8
论文数:
5.3K
被引数:
9.8K
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