107 citations · 184 across the 11 of their papers we have counts for
11 papers
Stability of a high-finesse optical cavity at 493 nm in vacuum for cavity QED with Barium ions
Diptaranjan Das, Ezra Kassa, Hiroki Takahashi
We explore the stability of a high-finesse optical cavity at 493 nm in vacuum for cavity QED with Barium ions. A high-finesse Fabry-Perot cavity is built using mirrors with high-re…
Profile control of fibre-based micro-mirrors using adaptive laser shooting with imaging
Shaobo Gao, Vishnu Kavungal, Shuma Oya +5
Fibre Fabry-Perot cavities (FFPCs) are used in various studies in cavity quantum electrodynamics (CQED) and quantum technologies due to the cavity's small mode volume and compact i…
How to integrate a miniature optical cavity in a linear ion trap: shielding dielectrics and trap symmetry
Ezra Kassa, Shaobo Gao, Soon Teh +2
One method of scaling up quantum systems is to adopt a modular approach. In the ion trap architecture, an efficient photonic interface between independent linear ion traps would al…
Ion Trapping with a Laser-written 3D Miniaturized Monolithic Linear Paul Trap for Microcavity Integration
Soon Teh, Ezra Kassa, Shaobo Gao +2
The miniaturization of ion trap and the precise placement of its electrodes are necessary for the integration of a microcavity to facilitate efficient ion-cavity coupling. We prese…
Multi-resonant open-access micro-cavity arrays for light matter interaction
Thomas H. Doherty, Axel Kuhn, Ezra Kassa
We report the realisation of a high-finesse open-access cavity array, tailored towards the creation of multiple coherent light-matter interfaces within a compact environment. We de…
Effects of cavity birefringence in polarisation-encoded quantum networks
Ezra Kassa, William J Hughes, Shaobo Gao +1
The generation of entanglement between distant atoms via single photons is the basis for networked quantum computing, a promising route to large-scale trapped-ion and trapped-atom…
Enhanced ion-cavity coupling through cavity cooling in the strong coupling regime
Costas Christoforou, Corentin Pignot, Ezra Kassa +2
Incorporating optical cavities in ion traps is becoming increasingly important in the development of photonic quantum networks. However, the presence of the cavity can hamper effic…
Strong coupling of a single ion to an optical cavity
Hiroki Takahashi, Ezra Kassa, Costas Christoforou +1
Strong coupling between an atom and an electromagnetic resonator is an important condition in cavity quantum electrodynamics (QED). While strong coupling in various physical system…
Precise positioning of an ion in an integrated Paul trap-cavity system using radiofrequency signals
Ezra Kassa, Hiroki Takahashi, Costas Christoforou +1
We report a novel miniature Paul ion trap design with an integrated optical fibre cavity which can serve as a building block for a fibre-linked quantum network. In such cavity quan…
Cavity-induced anti-correlated photon emission rates of a single ion
Hiroki Takahashi, Ezra Kassa, Costas Christoforou +1
We report on the alteration of photon emission properties of a single trapped ion coupled to a high finesse optical fiber cavity. We show that the vacuum field of the cavity can si…
Novel laser machining of optical fibers for long cavities with low birefringence
Hiroki Takahashi, Jack Morphew, Fedja Orucevic +3
We present a novel method of machining optical fiber surfaces with a CO laser for use in Fiber-based Fabry-Perot Cavities (FFPCs). Previously FFPCs were prone to large birefr…