Experimental Verification of Entanglement Generated in a Plasmonic System

F. Dieleman; M. S. Tame; Y. Sonnefraud; M. S. Kim; S. A. Maier

doi:10.1021/acs.nanolett.7b03372

Experimental Verification of Entanglement Generated in a Plasmonic System

F. Dieleman, M. S. Tame, Y. Sonnefraud, M. S. Kim, S. A. Maier

Research output: Contribution to journal › Article › Research › peer-review

24 Citations (Scopus)

Abstract

A core process in many quantum tasks is the generation of entanglement. It is being actively studied in a variety of physical settings - from simple bipartite systems to complex multipartite systems. In this work we experimentally study the generation of bipartite entanglement in a nanophotonic system. Entanglement is generated via the quantum interference of two surface plasmon polaritons in a beamsplitter structure, i.e., utilizing the Hong-Ou-Mandel (HOM) effect, and its presence is verified using quantum state tomography. The amount of entanglement is quantified by the concurrence and we find values of up to 0.77 ± 0.04. Verifying entanglement in the output state from HOM interference is a nontrivial task and cannot be inferred from the visibility alone. The techniques we use to verify entanglement could be applied to other types of photonic system and therefore may be useful for the characterization of a range of different nanophotonic quantum devices.

Original language	English
Pages (from-to)	7455-7461
Number of pages	7
Journal	Nano Letters
Volume	17
Issue number	12
DOIs	https://doi.org/10.1021/acs.nanolett.7b03372
Publication status	Published - 13 Dec 2017
Externally published	Yes

Keywords

entanglement
nanophotonic waveguides
Quantum plasmonics

Access to Document

10.1021/acs.nanolett.7b03372

Cite this

@article{f9bfd7d213494acb9309ae892d6dc2fe,

title = "Experimental Verification of Entanglement Generated in a Plasmonic System",

abstract = "A core process in many quantum tasks is the generation of entanglement. It is being actively studied in a variety of physical settings - from simple bipartite systems to complex multipartite systems. In this work we experimentally study the generation of bipartite entanglement in a nanophotonic system. Entanglement is generated via the quantum interference of two surface plasmon polaritons in a beamsplitter structure, i.e., utilizing the Hong-Ou-Mandel (HOM) effect, and its presence is verified using quantum state tomography. The amount of entanglement is quantified by the concurrence and we find values of up to 0.77 ± 0.04. Verifying entanglement in the output state from HOM interference is a nontrivial task and cannot be inferred from the visibility alone. The techniques we use to verify entanglement could be applied to other types of photonic system and therefore may be useful for the characterization of a range of different nanophotonic quantum devices.",

keywords = "entanglement, nanophotonic waveguides, Quantum plasmonics",

author = "F. Dieleman and Tame, \{M. S.\} and Y. Sonnefraud and Kim, \{M. S.\} and Maier, \{S. A.\}",

note = "Funding Information: We thank Will McCutcheon for helpful discussions. This research was supported by the Marie Sklodowska-Curie Early Stage Researcher programme, the Marie Curie Training Network on Frontiers in Quantum Technologies (FP7/2007-2013), the European Office of Aerospace Science and Technology EOARD, the South African National Research Foundation, the University of KwaZulu-Natal Nanotechnology Platform, and the South African National Institute for Theoretical Physics. M.S.K. acknowledges the Royal Society and the UK EPSRC (FP/K034480/1). S.A.M. acknowledges the Lee-Lucas and Hybrid Nanosystems Chairs in Physics. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = dec,

day = "13",

doi = "10.1021/acs.nanolett.7b03372",

language = "English",

volume = "17",

pages = "7455--7461",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Experimental Verification of Entanglement Generated in a Plasmonic System

AU - Dieleman, F.

AU - Tame, M. S.

AU - Sonnefraud, Y.

AU - Kim, M. S.

AU - Maier, S. A.

N1 - Funding Information: We thank Will McCutcheon for helpful discussions. This research was supported by the Marie Sklodowska-Curie Early Stage Researcher programme, the Marie Curie Training Network on Frontiers in Quantum Technologies (FP7/2007-2013), the European Office of Aerospace Science and Technology EOARD, the South African National Research Foundation, the University of KwaZulu-Natal Nanotechnology Platform, and the South African National Institute for Theoretical Physics. M.S.K. acknowledges the Royal Society and the UK EPSRC (FP/K034480/1). S.A.M. acknowledges the Lee-Lucas and Hybrid Nanosystems Chairs in Physics. Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/12/13

Y1 - 2017/12/13

N2 - A core process in many quantum tasks is the generation of entanglement. It is being actively studied in a variety of physical settings - from simple bipartite systems to complex multipartite systems. In this work we experimentally study the generation of bipartite entanglement in a nanophotonic system. Entanglement is generated via the quantum interference of two surface plasmon polaritons in a beamsplitter structure, i.e., utilizing the Hong-Ou-Mandel (HOM) effect, and its presence is verified using quantum state tomography. The amount of entanglement is quantified by the concurrence and we find values of up to 0.77 ± 0.04. Verifying entanglement in the output state from HOM interference is a nontrivial task and cannot be inferred from the visibility alone. The techniques we use to verify entanglement could be applied to other types of photonic system and therefore may be useful for the characterization of a range of different nanophotonic quantum devices.

AB - A core process in many quantum tasks is the generation of entanglement. It is being actively studied in a variety of physical settings - from simple bipartite systems to complex multipartite systems. In this work we experimentally study the generation of bipartite entanglement in a nanophotonic system. Entanglement is generated via the quantum interference of two surface plasmon polaritons in a beamsplitter structure, i.e., utilizing the Hong-Ou-Mandel (HOM) effect, and its presence is verified using quantum state tomography. The amount of entanglement is quantified by the concurrence and we find values of up to 0.77 ± 0.04. Verifying entanglement in the output state from HOM interference is a nontrivial task and cannot be inferred from the visibility alone. The techniques we use to verify entanglement could be applied to other types of photonic system and therefore may be useful for the characterization of a range of different nanophotonic quantum devices.

KW - entanglement

KW - nanophotonic waveguides

KW - Quantum plasmonics

UR - https://www.scopus.com/pages/publications/85038206931

U2 - 10.1021/acs.nanolett.7b03372

DO - 10.1021/acs.nanolett.7b03372

M3 - Article

C2 - 29116805

AN - SCOPUS:85038206931

SN - 1530-6984

VL - 17

SP - 7455

EP - 7461

JO - Nano Letters

JF - Nano Letters

IS - 12

ER -

Experimental Verification of Entanglement Generated in a Plasmonic System

Abstract

Keywords

Access to Document

Other files and links

Cite this