论文标题
在存在Qubit Qubit相互作用噪声的情况下,环境引起的纠缠生成了两个Qubit
Environment-induced entanglement generation for two qubits in the presence of qubit-qubit interaction noise
论文作者
论文摘要
使用完全可解决的纯dephasing模型,我们展示了如何通过与共同环境的相互作用以及同时应用合适的控制脉冲来生成Qubits之间的纠缠。控制脉冲能够有效地消除环境的有害效果,同时保留量子位之间的间接相互作用,从而导致产生近乎完美的纠缠。此外,如果矩形直接相互作用,我们还研究了纠缠动力学。这种相互作用甚至可能包含噪声项。这种额外的噪声的当前导致了额外的反折叠项。无法通过同时将脉冲在两个量子位上施加脉冲来删除该变质项。相反,我们表明,通过在两个脉冲序列之间引入时间延迟,仍然可以通过与共同环境的相互作用来生成近乎完美的纠缠。
Using an exactly solvable pure dephasing model, we show how entanglement between qubits can be generated via the interaction with a common environment and concurrent application of suitable control pulses. The control pulses are able to effectively remove the detrimental effect of the environment while preserving the indirect interaction between the qubits, thereby leading to the generation of near-perfect entanglement. Furthermore, we also investigate the entanglement dynamics if the qubits are directly interacting; this interaction may even contain a noise term. The present of this additional noise leads to an additional decoherence term. This decoherence term cannot be removed by applying the pulses at the same time to both qubits. Rather, we show that by introducing a time delay between the two pulse sequences, near-perfect entanglement can still be generated via the interaction with the common environment.