手法を比較

	サーフェスコード量子誤り訂正	量子鍵配送（BB84）
分野	量子コンピューティング	量子コンピューティング
系統	Machine learning	Machine learning
提唱年	2003	1984
提唱者	Alexei Kitaev	Charles Bennett and Gilles Brassard
種類	Error correction code	Cryptographic protocol
原典	Kitaev, A. Y. (2003). Fault-tolerant quantum computation by anyons. Annals of Physics, 303, 2–30.	Bennett, C. H., Brassard, G. (1984). Quantum cryptography: public key distribution and coin tossing. Proceedings of IEEE International Conference on Computers, Systems, and Signal Processing, 175–179.
別名	surface code, topological error correction	BB84, quantum cryptography
関連	3	2
概要	Surface Code is a two-dimensional topological quantum error-correcting code that protects quantum information through geometric redundancy. Introduced by Alexei Kitaev in 2003, surface code is considered the leading candidate for large-scale fault-tolerant quantum computing due to its high error thresholds and feasibility on two-dimensional qubit arrays.	Quantum Key Distribution (QKD) BB84 is a cryptographic protocol allowing two parties to establish a shared secret key using quantum mechanics. Proposed by Bennett and Brassard in 1984, BB84 provides information-theoretic security: an eavesdropper's presence is guaranteed to be detected, and the secret key is provably secure against unlimited computational power.