# The effects of magnetic field and hydrogen-like impurity on RbCl quantum pseudodot qubit

The effects of magnetic field and hydrogen-like impurity on RbCl quantum pseudodot qubit By using a variational method of Pekar type, we investigate the effects of the hydrogen-like impurity and magnetic field on the electron’s probability density (PD) and oscillating frequency (OF) of a RbCl quantum pseudodot qubit. Numerical results indicate that (1) the PD oscillates periodically; (2) the crest of the PD will decrease with increasing the cyclotron frequencies and the Coulombic impurity potential strength; (3) as the cyclotron frequency of the magnetic field and the strength of the Coulombic impurity potential increases, PD’s peaks will occur more frequently; (4) besides, Figs. 1b and 2b clearly show that in a single period the PD will decrease with increasing the cyclotron frequency and the Coulombic impurity potential strength when $$t > 1.8\;\text{fs}$$ t > 1.8 fs ; whereas the changing law is just the opposite when $$t < 1.8\;\text{fs}$$ t < 1.8 fs ; (5) the OF is an aggrandizing function of the strength of the Coulombic impurity potential, whereas it is a decaying one of the cyclotron frequencies of the magnetic field. The coherence of qubit is crucial to the investigations of quantum information and quantum computation, where the electron’s PD, the OF and the coherence time are the physical quantities representing the properties of coherence. Our research results fine that by changing the cyclotron frequency of the magnetic field and the strength of the Coulombic impurity potential one can adjust the electron’s PD and the OF.[Figure not available: see fulltext.][Figure not available: see fulltext.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Optical and Quantum Electronics Springer Journals

# The effects of magnetic field and hydrogen-like impurity on RbCl quantum pseudodot qubit

, Volume 49 (9) – Aug 22, 2017
8 pages

/lp/springer_journal/the-effects-of-magnetic-field-and-hydrogen-like-impurity-on-rbcl-2KgeW15Rqu
Publisher
Springer US
Subject
Physics; Optics, Lasers, Photonics, Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks
ISSN
0306-8919
eISSN
1572-817X
D.O.I.
10.1007/s11082-017-1146-9
Publisher site
See Article on Publisher Site

### Abstract

By using a variational method of Pekar type, we investigate the effects of the hydrogen-like impurity and magnetic field on the electron’s probability density (PD) and oscillating frequency (OF) of a RbCl quantum pseudodot qubit. Numerical results indicate that (1) the PD oscillates periodically; (2) the crest of the PD will decrease with increasing the cyclotron frequencies and the Coulombic impurity potential strength; (3) as the cyclotron frequency of the magnetic field and the strength of the Coulombic impurity potential increases, PD’s peaks will occur more frequently; (4) besides, Figs. 1b and 2b clearly show that in a single period the PD will decrease with increasing the cyclotron frequency and the Coulombic impurity potential strength when $$t > 1.8\;\text{fs}$$ t > 1.8 fs ; whereas the changing law is just the opposite when $$t < 1.8\;\text{fs}$$ t < 1.8 fs ; (5) the OF is an aggrandizing function of the strength of the Coulombic impurity potential, whereas it is a decaying one of the cyclotron frequencies of the magnetic field. The coherence of qubit is crucial to the investigations of quantum information and quantum computation, where the electron’s PD, the OF and the coherence time are the physical quantities representing the properties of coherence. Our research results fine that by changing the cyclotron frequency of the magnetic field and the strength of the Coulombic impurity potential one can adjust the electron’s PD and the OF.[Figure not available: see fulltext.][Figure not available: see fulltext.]

### Journal

Optical and Quantum ElectronicsSpringer Journals

Published: Aug 22, 2017

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