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Title: Origins and optimization of entanglement in plasmonically coupled quantum dots

Journal Article · · Physical Review A
 [1];  [2];  [2];  [2];  [3];  [2]
  1. Cornell Univ., Ithaca, NY (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States)

In this paper, a system of two or more quantum dots interacting with a dissipative plasmonic nanostructure is investigated in detail by using a cavity quantum electrodynamics approach with a model Hamiltonian. We focus on determining and understanding system configurations that generate multiple bipartite quantum entanglements between the occupation states of the quantum dots. These configurations include allowing for the quantum dots to be asymmetrically coupled to the plasmonic system. Analytical solution of a simplified limit for an arbitrary number of quantum dots and numerical simulations and optimization for the two- and three-dot cases are used to develop guidelines for maximizing the bipartite entanglements. For any number of quantum dots, we show that through simple starting states and parameter guidelines, one quantum dot can be made to share a strong amount of bipartite entanglement with all other quantum dots in the system, while entangling all other pairs to a lesser degree.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1366466
Alternate ID(s):
OSTI ID: 1290314
Journal Information:
Physical Review A, Vol. 94, Issue 2; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Cited By (9)

Accounting for errors in quantum algorithms via individual error reduction journal January 2019
PsiQuaSP–A library for efficient computation of symmetric open quantum systems journal November 2017
Recovering noise-free quantum observables journal January 2019
Plasmonic-modulated dissipative-driven multiqubit entanglement under asymmetric detuning journal October 2019
Prolonging entanglement dynamics near periodic plasmonic nanostructures journal August 2017
Ground-state cooling enabled by critical coupling and dark entangled states journal January 2019
Quantum dot plasmonics: from weak to strong coupling journal February 2019
PsiQuaSP -- A library for efficient computation of symmetric open quantum systems text January 2017
Recovering noise-free quantum observables text January 2018

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