105 citations · 610 across the 22 of their papers we have counts for
22 papers
Towards a fictitious magnetic field trap for both ground and Rydberg state Rb atoms via the evanescent field of an optical nanofibre
Alexey Vylegzhanin, Dylan J. Brown, Danil F. Kornovan +2
Cold Rydberg atoms, known for their long lifetimes and strong dipole-dipole interactions that lead to the Rydberg blockade phenomenon, are among the most promising platforms for qu…
Collective vacuum-Rabi splitting with an atomic spin wave coupled to a cavity mode
Félix Hoffet, Alexey Vylegzhanin, Emanuele Distante +3
A promising platform for quantum information research relies on cavity coupled atomic spin-waves, enabling efficient operations such as quantum memories, quantum light generation a…
A packaged whispering gallery resonator device based on an optical nanoantenna coupler
Angzhen Li, Ke Tian, Jibo Yu +5
In this work, we present the design and fabrication of a packaged whispering gallery mode (WGM) device based on an optical nanoantenna as the coupler and a glass microsphere as the…
Dynamic Multiple Nanoparticle Trapping using Metamaterial Plasmonic Tweezers
Domna G. Kotsifaki, Viet Giang Truong, Sile Nic Chormaic
Optical manipulation has attracted remarkable interest owing to its versatile and non-invasive nature. However, conventional optical trapping remains inefficient for the nanoscopic…
Coupling between guided modes of two parallel nanofibers
Fam Le Kien, Lewis Ruks, Sile Nic Chormaic +1
We study the coupling between the fundamental guided modes of two identical parallel nanofibers analytically and numerically. We calculate the coefficients of directional coupling,…
Fabrication of Optical Nanofibre-Based Cavities using Focussed Ion-Beam Milling -- A Review
Priscila Romagnoli, Maki Maeda, Jonathan M. Ward +2
Nanofibre-based optical cavities are particularly useful for quantum optics application, such as the development of integrated single-photon sources, and for studying fundamental l…
Polarization-Controlled Cavity Input-Output Relations
Fuchuan Lei, Jonathan M. Ward, Priscila Romagnoli +1
Cavity input-output relations (CIORs) describe a universal formalism relating each of the far-field amplitudes outside the cavity to the internal cavity fields. Conventionally, the…
Light-induced rotation of dielectric microparticles around an optical nanofiber
Georgiy Tkachenko, Ivan Toftul, Cindy Esporlas +4
We experimentally demonstrate orbiting of isotropic, dielectric microparticles around an optical nanofiber that guides elliptically polarized fundamental modes. The driving transve…
Efficient Microparticle Trapping with Plasmonic Annular Apertures Arrays
Xue Han, Viet Giang Truong, Síle Nic Chormaic
In this work, we demonstrate trapping of microparticles using a plasmonic tweezers based on arrays of annular apertures. The transmission spectra and the E- field distribution are…
Tailoring a nanofiber for enhanced photon emission and coupling efficiency from single quantum emitters
Wenfang Li, Jinjin Du, Síle Nic Chormaic
We present a novel approach to enhance the spontaneous emission rate of single quantum emitters in an optical nanofiber-based cavity by introducing a narrow air-filled groove into…
Pump induced lasing suppression in Yb:Er-doped microlasers
Fuchuan Lei, Yong Yang, Jonathan Ward +1
A pump source is one of the essential prerequisites in order to achieve lasing, and, in most cases, a stronger pump leads to higher laser power at the output. However, this behavio…
Tunable erbium-doped microbubble laser fabricated by sol-gel coating
Yong Yang, Fuchuan Lei, Sho Kasumie +4
In this work, we show that the application of a sol-gel coating renders a microbubble whispering gallery resonator into an active device. During the fabrication of the resonator, a…
Cavity ring-up spectroscopy for dissipative and dispersive sensing in a whispering gallery mode resonator
Yong Yang, Ramgopal Madugani, Sho Kasumie +2
In whispering gallery mode resonator sensing applications, the conventional way to detect a change in the parameter to be measured is by observing the steady state transmission spe…
Nonlinear force dependence on optically bound micro-particle arrays in the eva-nescent fields of fundamental and higher order microfibre modes
Aili Maimaiti, Daniela Holzmann, Viet Giang Truong +2
Particles trapped in the evanescent field of an ultrathin optical fibre inter-act over very long distances via multiple scattering of the fibre-guided fields. In ultrathin fibres t…
Glass-on-Glass Fabrication of Bottle-Shaped Tunable Micro-Lasers and Their Applications
Jonathan M. Ward, Yong Yang, Sile Nic Chormaic
We describe a novel method for making microbottle-shaped lasers by using a CO laser to melt Er:Yb glass onto silica microcapillaries or fibres. This is realised by the fact tha…
Linear Laser Tuning Using a Pressure-Sensitive Microbubble Resonator
Ramgopal Madugani, Yong Yang, Vu H Le +2
The tunability of an optical cavity is an essential requirement for many areas of research. Here, we use the Pound-Drever-Hall technique to lock a laser to a whispering gallery mod…
A high-Q, ultrathin-walled microbubble resonator for aerostatic pressure sensing
Yong Yang, Sunny Saurabh, Jonathan M Ward +1
Sensors based on whispering gallery resonators have minute footprints and can push achievable sensitivities and resolutions to their limits. Here, we use a microbubble resonator, w…
Higher order microfibre modes for dielectric particle trapping and propulsion
Aili Maimaiti, Viet Giang Truong, Marios Sergides +2
Optical manipulation in the vicinity of optical micro- and nanofibres has shown potential across several fields in recent years, including microparticle control, and cold atom prob…
Optical nanofiber integrated into an optical tweezers for particle manipulation and in-situ fiber probing
Ivan Gusachenko, Mary C. Frawley, Viet Giang Truong +1
Precise control of particle positioning is desirable in many optical propulsion and sorting applications. Here, we develop an integrated platform for particle manipulation consisti…
TeraHz tuning of whispering gallery modes in a PDMS, stand-alone, stretchable microsphere
Ramgopal Madugani, Yong Yang, Jonathan M Ward +7
We report on tuning the optical whispering gallery modes in a poly dimethyl siloxane-based (PDMS) microsphere resonator by more than a THz. The PDMS microsphere system consists of…
Observation of Zeeman shift in the rubidium D2 line using an optical nanofiber in vapor
Amy Watkins, Vibhuti Bhushan Tiwari, Jonathan M. Ward +1
We report on the observation of a Zeeman shift (order of 100 MHz) of the Doppler-broadened D2 transition of both 85Rb and 87Rb isotopes via transmission through a tapered optical n…
Tapered optical fibers as tools for probing magneto-optical trap characteristics
M. J. Morrissey, K. Deasy, Y. Wu +2
We present a novel technique for measuring the characteristics of a magneto-optical trap for cold atoms by monitoring the spontaneous emission from trapped atoms coupled into the g…