Demonstration of a Fundamental Quantum Logic Gate

作者：C. Monroe, D. M. Meekhof, B. E. King, Wayne M. Itano, D. J. Wineland · 发表于：Physical Review Letters · 年份：1995 · DOI：10.1103/physrevlett.75.4714 · 被引用次数：1593 · 研究领域：Quantum Information and Cryptography、Quantum Computing Algorithms and Architecture、Quantum Mechanics and Applications

We demonstrate the operation of a two-bit "controlled-NOT" quantum logic gate, which, in conjunction with simple single-bit operations, forms a universal quantum logic gate for quantum computation. The two quantum bits are stored in the internal and external degrees of freedom of a single trapped atom, which is first laser cooled to the zero-point energy. Decoherence effects are identified for the operation, and the possibility of extending the system to more qubits appears promising.