Demonstration of a Fundamental Quantum Logic Gate

Dec 18, 1995
3 pages
Published in:
  • Phys.Rev.Lett. 75 (1995) 4714-4717

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Abstract: (APS)
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.
Note:
  • Nobel Prize 2012
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