Quantum decoherence behavior is observed and studied on a 2 qubit NMR quantum computer. Experimental results show a good agreement between theory and experiment. The scheme can be generalized to the case that the envi...Quantum decoherence behavior is observed and studied on a 2 qubit NMR quantum computer. Experimental results show a good agreement between theory and experiment. The scheme can be generalized to the case that the environment is composed of N independent qubits.展开更多
This paper reviews the develpment of the quantum computers in the last twenty years.Ranging form the beginning of the ides until the deep investigation of its construction,it is said that they are more powerful than t...This paper reviews the develpment of the quantum computers in the last twenty years.Ranging form the beginning of the ides until the deep investigation of its construction,it is said that they are more powerful than their present counterparts:even the first modest-sized quantum computer may make many enerypted data files insceure;with only a few hundred qubits it is possible to represent simultaneously more numbers than all atoms in the universe.The explications of these facts are made in the paper.After summarizing the important and major events happening in the last twenty years,this paper briefly explains the working principles of quantum computing and then looks forward the future.展开更多
文摘Quantum decoherence behavior is observed and studied on a 2 qubit NMR quantum computer. Experimental results show a good agreement between theory and experiment. The scheme can be generalized to the case that the environment is composed of N independent qubits.
文摘This paper reviews the develpment of the quantum computers in the last twenty years.Ranging form the beginning of the ides until the deep investigation of its construction,it is said that they are more powerful than their present counterparts:even the first modest-sized quantum computer may make many enerypted data files insceure;with only a few hundred qubits it is possible to represent simultaneously more numbers than all atoms in the universe.The explications of these facts are made in the paper.After summarizing the important and major events happening in the last twenty years,this paper briefly explains the working principles of quantum computing and then looks forward the future.
