کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1866135 | 1037931 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantum state transfer via a two-qubit Heisenberg XXZ spin model
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
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چکیده انگلیسی
Transfer of quantum states through a two-qubit Heisenberg XXZ spin model with a nonuniform magnetic field b is investigated by means of quantum theory. The influences of b, the spin exchange coupling J and the effective transfer time T=JtT=Jt on the fidelity have been studied for some different initial states. Results show that fidelity of the transferred state is determined not only by J, T and b but also by the initial state of this quantum system. Ideal information transfer can be realized for some kinds of initial states. We also found that the interactions of the z -component JzJz and uniform magnetic field B do not have any contribution to the fidelity. These results may be useful for quantum information processing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 16, 14 April 2008, Pages 2830–2833
Journal: Physics Letters A - Volume 372, Issue 16, 14 April 2008, Pages 2830–2833
نویسندگان
Jia Liu, Guo-Feng Zhang, Zi-Yu Chen,