NDLI: Quantum Entanglement and Spin Control in Silicon Nanocrystal

Content Provider	PubMed Central
Author	Vesna, Berec
Editor	Adesso, Gerardo
Copyright Year	2012
Abstract	Selective coherence control and electrically mediated exchange coupling of single electron spin between triplet and singlet states using numerically derived optimal control of proton pulses is demonstrated. We obtained spatial confinement below size of the Bohr radius for proton spin chain FWHM. Precise manipulation of individual spins and polarization of electron spin states are analyzed via proton induced emission and controlled population of energy shells in pure 29Si nanocrystal. Entangled quantum states of channeled proton trajectories are mapped in transverse and angular phase space of 29Si axial channel alignment in order to avoid transversal excitations. Proton density and proton energy as impact parameter functions are characterized in single particle density matrix via discretization of diagonal and nearest off-diagonal elements. We combined high field and low densities (1 MeV/92 nm) to create inseparable quantum state by superimposing the hyperpolarizationed proton spin chain with electron spin of 29Si. Quantum discretization of density of states (DOS) was performed by the Monte Carlo simulation method using numerical solutions of proton equations of motion. Distribution of gaussian coherent states is obtained by continuous modulation of individual spin phase and amplitude. Obtained results allow precise engineering and faithful mapping of spin states. This would provide the effective quantum key distribution (QKD) and transmission of quantum information over remote distances between quantum memory centers for scalable quantum communication network. Furthermore, obtained results give insights in application of channeled protons subatomic microscopy as a complete versatile scanning-probe system capable of both quantum engineering of charged particle states and characterization of quantum states below diffraction limit linear and in-depth resolution.
Related Links	http://dx.doi.org/10.1371/journal.pone.0045254
Starting Page	45254
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	9
Volume Number	7
Language	English
Publisher	Public Library of Science
Publisher Date	2012-09-24
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Correction: Quantum Entanglement and Spin Control in Silicon Nanocrystal

Quantum entanglement and spin control in silicon nanocrystal

Direct measurement of nonlocal entanglement of two-qubit spin quantum states

Quantum entanglement at ambient conditions in a macroscopic solid-state spin ensemble

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Magic electron affection in preparation process of silicon nanocrystal

Pauli Spin Blockade in a Highly Tunable Silicon Double Quantum Dot

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Quantum Entanglement and Spin Control in Silicon Nanocrystal

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Correction: Quantum Entanglement and Spin Control in Silicon Nanocrystal

Quantum entanglement and spin control in silicon nanocrystal

Direct measurement of nonlocal entanglement of two-qubit spin quantum states

Quantum entanglement at ambient conditions in a macroscopic solid-state spin ensemble

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