Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting

Room-Temperature Single Photon Source: Nanocrystals in Photonic Bandgap Microcavities

Justin M. Winkler, Svetlana G. Lukishova, Luke J. Bissell, D. Goldberg, Vinod M. Menon

Published Jan 1, 2013• 0 citations
Publisher

Abstract

Single-photon sources based on nanocrystals in 1-D photonic bandgap microcavities (cholesteric liquid crystal and Bragg reflectors) are reported. Studied emitters include nanocrystal quantum dots, color centers in nanodiamonds, and trivalent rare-earth ions in nanocrystals.
DOI
10.1364/qim.2013.w6.36

Related papers

Room-temperature single photon sources with definite circular and linear polarizations based on single-emitter fluorescence in liquid crystal hosts

Luke J. Bissell, Svetlana G. Lukishova, Ansgar W. Schmid +5 more

Experimental results of two room-temperature, robust and efficient single-photon sources with definite circular and linear polarization using single-emitter fluorescence in cholesteric and nematic liquid crystal hosts are discussed. For single emitters, we used nanocrystal quantum dots, single color centers in nanodiamonds, and single dye molecules. Single-photon sources based on single emitters in liquid crystals are the room temperature alternatives to cryogenic single-photon sources base on semiconductor heterostructured quantum dots in microcavities prepared by molecular beam epitaxy.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Sep 10, 2010•1 citation

Room-temperature single-photon sources with definite circular and linear polarizations based on single-emitter fluorescence in liquid crystal hosts

Justin M. Winkler, Svetlana G. Lukishova, Luke J. Bissell

Definite circular and linear polarizations of room-temperature single-photon sources, which can serve as polarization bases for quantum key distribution, are produced by doping planar-aligned liquid crystal hosts with single fluorescence emitters. Chiral 1-D photonic bandgap microcavities for a single handedness of circularly polarized light were prepared from both monomeric and oligomeric cholesteric liquid crystals. Fluorescent emitters, such as nanocrystal quantum dots, nitrogen vacancy color centers in nanodiamonds, and rare-earth ions in nanocrystals, were doped into these microcavity structures and used to produce circularly polarized fluorescence of definite handedness. Additionally, we observed circularly polarized resonances in the spectrum of nanocrystal quantum dot fluorescence at the edge of the cholesteric microcavity's photonic stopband. For this polarization we obtained a ~4.9 enhancement of intensity compared to the polarization of the opposite handedness that propagates without photonic bandgap microcavity effects. Such a resonance is indicative of coupling of quantum dot fluorescence to the cholesteric microcavity mode. We have also used planar-aligned nematic liquid crystal hosts to align DiI dye molecules doped into the host, thereby providing a single-photon source of linear polarization of definite direction. Antibunching is demonstrated for fluorescence of nanocrystal quantum dots, nitrogen vacancy color centers, and dye molecules in these liquid crystal structures.

Journal of Physics Conference Series•Feb 8, 2013•2 citations

Deterministically polarized, room-temperature single-photon source: Single-dye molecule fluorescence in liquid crystal host

Svetlana G. Lukishova, Ansgar W. Schmid, Christopher M. Supranowitz +4 more

A single photon source based on fluorescence from single-dye molecules in liquid-crystal hosts manifests itself in observed dye-fluorescence antibunching. 400 to 2200-nm, liquid-crystal 1-D-photonic-bandgap structures will increase the source efficiency using dyes/colloidal-quantum-dots as emitters.

Conference on Lasers and Electro-Optics•Jan 1, 2004•0 citations

Quantum light manipulation: a path towards efficient pure room-temperature single photon sources

Jennifer Ann Hollingsworth, Boaz Lubotzky, Somak Majumder +2 more

Quantum light and in particular single photons have become essential resources for a growing number of quantum applications including quantum computing, quantum key distribution and quantum metrology. Solid-state atomlike systems such as semiconductor quantum dots and color defects in crystals have become the hallmark of highly pure single photon emitters in the past two decades. A particular interest has been developed in nanocrystal quantum dots (NQDs) and color centers in diamond as potential compact room-temperature emitters. There are however several challenges that inhibit the use of such sources in current technologies including low photon extraction efficiency, low emission rates and relatively low single photon purities. In this work we will review our efforts in overcoming these technical difficulties using several complementary methods including designing several nanoantenna devices that enhance the directionality and emission rate of the nanoemitter. In addition, we developed several temporal heralding techniques to overcome the hurdle of low single photon purity in NQDs in an effort to produce a highly pure, bright and efficient single photon source on-chip.

Optical Sensing, Imaging, and Photon Counting: From X-Rays to THz•Sep 18, 2018•0 citations

Room-Temperature Single-Photon Sources with Definite Circular and Linear Polarizations

Svetlana G. Lukishova, Luke J. Bissell, Justin M. Winkler +3 more

Experimental results of two room-temperature, robust and efficient single photon sources with definite circular and linear polarization using single-emitter fluorescence in cholesteric and nematic liquid crystal hosts are discussed.

International Conference on Quantum Information•Jan 1, 2011•6 citations

Efficient room temperature single-photon source for quantum information: Single dye molecule fluorescence in photonic-band-gap cholesteric liquid crystal host

Svetlana G. Lukishova, Ansgar W. Schmid, Andrew J. McNamara +2 more

Operation of a single photon source for quantum information technology is demonstrated via photon antibunching in the fluorescence of single terrylene molecules embedded in a cholesteric host. The use of a one-dimensional photonic band-gap of planar aligned cholesteric layers will allow further increase in the source efficiency.

Frontiers in Optics•Jan 1, 2003•0 citations
Experimental results of two room-temperature, robust and efficient single-photon sources with definite circular and linear polarization using single-emitter fluorescence in cholesteric and nematic liquid crystal hosts are discussed. For single emitters, we used nanocrystal quantum dots, single color centers in nanodiamonds, and single dye molecules. Single-photon sources based on single emitters in liquid crystals are the room temperature alternatives to cryogenic single-photon sources base on semiconductor heterostructured quantum dots in microcavities prepared by molecular beam epitaxy.
Definite circular and linear polarizations of room-temperature single-photon sources, which can serve as polarization bases for quantum key distribution, are produced by doping planar-aligned liquid crystal hosts with single fluorescence emitters. Chiral 1-D photonic bandgap microcavities for a single handedness of circularly polarized light were prepared from both monomeric and oligomeric cholesteric liquid crystals. Fluorescent emitters, such as nanocrystal quantum dots, nitrogen vacancy color centers in nanodiamonds, and rare-earth ions in nanocrystals, were doped into these microcavity structures and used to produce circularly polarized fluorescence of definite handedness. Additionally, we observed circularly polarized resonances in the spectrum of nanocrystal quantum dot fluorescence at the edge of the cholesteric microcavity's photonic stopband. For this polarization we obtained a ~4.9 enhancement of intensity compared to the polarization of the opposite handedness that propagates without photonic bandgap microcavity effects. Such a resonance is indicative of coupling of quantum dot fluorescence to the cholesteric microcavity mode. We have also used planar-aligned nematic liquid crystal hosts to align DiI dye molecules doped into the host, thereby providing a single-photon source of linear polarization of definite direction. Antibunching is demonstrated for fluorescence of nanocrystal quantum dots, nitrogen vacancy color centers, and dye molecules in these liquid crystal structures.
Quantum light and in particular single photons have become essential resources for a growing number of quantum applications including quantum computing, quantum key distribution and quantum metrology. Solid-state atomlike systems such as semiconductor quantum dots and color defects in crystals have become the hallmark of highly pure single photon emitters in the past two decades. A particular interest has been developed in nanocrystal quantum dots (NQDs) and color centers in diamond as potential compact room-temperature emitters. There are however several challenges that inhibit the use of such sources in current technologies including low photon extraction efficiency, low emission rates and relatively low single photon purities. In this work we will review our efforts in overcoming these technical difficulties using several complementary methods including designing several nanoantenna devices that enhance the directionality and emission rate of the nanoemitter. In addition, we developed several temporal heralding techniques to overcome the hurdle of low single photon purity in NQDs in an effort to produce a highly pure, bright and efficient single photon source on-chip.