dorsal/arxiv
View SchemaCooperative loss and decoherence in quantum computation and commuication
| Authors | Lu-Ming Duan, Guang-Can Guo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9701020 |
| URL | https://arxiv.org/abs/quant-ph/9701020 |
Abstract
Cooperative effects in the loss (the amplitude damping) and decoherence (the phase damping) of the qubits (two-state quantum systems) due to the inevitable coupling to the same environment are investigated. It is found that the qubits undergo the dissipation coherently in this case. In particular, for a special kind of input states (called the coherence-preserving states), whose form depends on the type of the coupling, loss and decoherence in quantum memory are much reduced. Based on this phenomenon, a scheme by encoding the general input states of the qubits into the corresponding coherence-preserving states is proposed for reducing the cooperative loss and decoherence in quantum computation or communication.
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"abstract": "Cooperative effects in the loss (the amplitude damping) and decoherence (the\nphase damping) of the qubits (two-state quantum systems) due to the inevitable\ncoupling to the same environment are investigated. It is found that the qubits\nundergo the dissipation coherently in this case. In particular, for a special\nkind of input states (called the coherence-preserving states), whose form\ndepends on the type of the coupling, loss and decoherence in quantum memory are\nmuch reduced. Based on this phenomenon, a scheme by encoding the general input\nstates of the qubits into the corresponding coherence-preserving states is\nproposed for reducing the cooperative loss and decoherence in quantum\ncomputation or communication.",
"arxiv_id": "quant-ph/9701020",
"authors": [
"Lu-Ming Duan",
"Guang-Can Guo"
],
"categories": [
"quant-ph"
],
"title": "Cooperative loss and decoherence in quantum computation and commuication",
"url": "https://arxiv.org/abs/quant-ph/9701020"
},
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