کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1552802 1513211 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of temperature and hydrogen-like impurity on the coherence time of RbCl parabolic quantum dot qubit
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Effects of temperature and hydrogen-like impurity on the coherence time of RbCl parabolic quantum dot qubit
چکیده انگلیسی


• We study coherence time of parabolic quantum dot (PQD) qubit.
• Hydrogen-like impurity effect on coherence time of qubit.
• Temperature effect on coherence time of qubit.
• A single qubit can be realized in this two-level quantum system.
• The phonon spontaneous emission causes decoherence of the qubit.

By using a variational method of Pekar type, the Fermi Golden Rule and the quantum statistics theory (VMPTFGRQST), we investigate the effects of the hydrogen-like impurity and temperature on the coherence time of a parabolic quantum dot (PQD) qubit with a hydrogen-like impurity at the center. We then derive the ground and the first excited states' (GFES) eigenenergies and the eigenfunctions in a PQD. A single qubit can be realized in this two-level quantum system. The phonon spontaneous emission causes the decoherence of the qubit. The numerical results show that the coherence time is a decreasing function of the temperature, the strength of the Coulombic impurity potential (CIP) and the polaron radius (PR).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 90, February 2016, Pages 308–312
نویسندگان
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