IDG News Service October 29, 2003
A research team in Japan says it has successfully demonstrated for the first time in the world in a solid-state device one of the two basic building blocks that will be needed to construct a viable quantum computer. The team has built a controlled NOT (CNOT) gate, a fundamental building block for quantum computing in the same way that a NAND gate is for classical computing...
...One of the biggest tasks Tsai says he faces is extending the time for which the two qubits are coupled together in a state known as quantum entanglement. In this state, which is one of several exotic properties associated with qubits and crucial to quantum computing, the two qubits act together even though they are not physically connected.
Tsai announced in February this year that his team has succeeded in entangling a pair of qubits...
a cat is said to have nine lives-- A Quantum Cat does even better: it can be dead and alive at the same time. This wizardry is at the heart of quantum computing
