PMID- 32115783
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200930
IS  - 1521-4095 (Electronic)
IS  - 0935-9648 (Linking)
VI  - 32
IP  - 16
DP  - 2020 Apr
TI  - Metasurface-Enabled Generation of Circularly Polarized Single Photons.
PG  - e1907832
LID - 10.1002/adma.201907832 [doi]
AB  - Single photons carrying spin angular momentum (SAM), i.e., circularly polarized 
      single photons generated typically by subjecting a quantum emitter (QE) to a 
      strong magnetic field at low temperatures, are at the core of chiral quantum 
      optics enabling nonreciprocal single-photon configurations and deterministic 
      spin-photon interfaces. Here, a conceptually new approach to the room-temperature 
      generation of SAM-coded single photons (SSPs) is described, which entails QE 
      nonradiative coupling to surface plasmons being transformed, by interacting with 
      an optical metasurface, into a collimated stream of SSPs with the designed 
      handedness. Design, fabrication, and characterization of SSP sources, consisting 
      of dielectric circular nanoridges with azimuthally varying widths 
      deterministically fabricated on a dielectric-protected silver film around a 
      nanodiamond containing a nitrogen-vacancy center, are reported. With properly 
      engineered phases of QE-originated fields scattered by nanoridges, the outcoupled 
      photons are characterized by a well-defined SAM (with the chirality >0.8) and 
      high directionality (collection efficiency up to 92%).
CI  - (c) 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Kan, Yinhui
AU  - Kan Y
AD  - Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai, 
      200240, China.
AD  - Center for Nano Optics, University of Southern Denmark, DK-5230, Odense M, 
      Denmark.
FAU - Andersen, Sebastian K H
AU  - Andersen SKH
AD  - Center for Nano Optics, University of Southern Denmark, DK-5230, Odense M, 
      Denmark.
FAU - Ding, Fei
AU  - Ding F
AD  - Center for Nano Optics, University of Southern Denmark, DK-5230, Odense M, 
      Denmark.
FAU - Kumar, Shailesh
AU  - Kumar S
AD  - Center for Nano Optics, University of Southern Denmark, DK-5230, Odense M, 
      Denmark.
FAU - Zhao, Changying
AU  - Zhao C
AD  - Institute of Engineering Thermophysics, Shanghai Jiao Tong University, Shanghai, 
      200240, China.
FAU - Bozhevolnyi, Sergey I
AU  - Bozhevolnyi SI
AUID- ORCID: 0000-0002-0393-4859
AD  - Center for Nano Optics, University of Southern Denmark, DK-5230, Odense M, 
      Denmark.
LA  - eng
GR  - Villum Kann Rasmussen Foundation/
GR  - 00022988/Villum Fonden/
GR  - 51636004/National Natural Science Foundation of China/
GR  - 201806230179/China Scholarship Council/
GR  - 341054/ERC_/European Research Council/International
PT  - Journal Article
DEP - 20200301
PL  - Germany
TA  - Adv Mater
JT  - Advanced materials (Deerfield Beach, Fla.)
JID - 9885358
SB  - IM
OTO - NOTNLM
OT  - circular polarization
OT  - metasurfaces
OT  - quantum emitters
OT  - single photons
OT  - surface plasmon polaritons
EDAT- 2020/03/03 06:00
MHDA- 2020/03/03 06:01
CRDT- 2020/03/03 06:00
PHST- 2019/11/28 00:00 [received]
PHST- 2020/01/28 00:00 [revised]
PHST- 2020/03/03 06:00 [pubmed]
PHST- 2020/03/03 06:01 [medline]
PHST- 2020/03/03 06:00 [entrez]
AID - 10.1002/adma.201907832 [doi]
PST - ppublish
SO  - Adv Mater. 2020 Apr;32(16):e1907832. doi: 10.1002/adma.201907832. Epub 2020 Mar 
      1.