657 citations · 3.4k across the 37 of their papers we have counts for
24 papers · 1 filter
Invariant-based master equation applied to driven qutrit coupled to a bath and a leaky cavity
Sagarika Basak, A. Javadi, D. Blume
We employ a generalized approach to the master equation for driven open -level () quantum systems using Lewis-Riesenfeld invariants, which avoids the driving-strength restr…
Fast optical control of a coherent hole spin in a microcavity
Mark Hogg, Nadia Antoniadis, Malwina Marczak +8
A spin-photon interface is one of the key components of a quantum network. Physical platforms under investigation span the range of modern experimental physics, from ultra-cold ato…
Realisation of a Coherent and Efficient One-Dimensional Atom
Natasha Tomm, Nadia O. Antoniadis, Marcelo Janovitch +8
A quantum emitter interacting with photons in a single optical-mode constitutes a one-dimensional atom. A coherent and efficiently coupled one-dimensional atom provides a large non…
Enhanced Electron Spin Coherence in a GaAs Quantum Emitter
Giang N. Nguyen, Clemens Spinnler, Mark R. Hogg +10
A spin-photon interface should operate with both coherent photons and a coherent spin to enable cluster-state generation and entanglement distribution. In high-quality devices, sel…
Cavity-enhanced excitation of a quantum dot in the picosecond regime
Alisa Javadi, Natasha Tomm, Nadia O. Antoniadis +6
A major challenge in generating single photons with a single emitter is to excite the emitter while avoiding laser leakage into the collection path. Ideally, any scheme to suppress…
Cavity-enhanced single-shot readout of a quantum dot spin within 3 nanoseconds
Nadia Olympia Antoniadis, Mark Richard Hogg, Willy Frederik Stehl +7
Rapid, high-fidelity single-shot readout of quantum states is a ubiquitous requirement in quantum information technologies, playing a crucial role in quantum computation, quantum e…
Direct observation of photon bound states using a single artificial atom
Natasha Tomm, Sahand Mahmoodian, Nadia O. Antoniadis +6
The interaction between photons and a single two-level atom constitutes a fundamental paradigm in quantum physics. The nonlinearity provided by the atom means that the light-matter…
Nonunitary Gate Operations by Dissipation Engineering
E. Zapusek, A. Javadi, F. Reiter
Irreversible logic is at odds with unitary quantum evolution. Emulating such operations by classical measurements can result in disturbances and high resource demands. To overcome…
A chiral one-dimensional atom using a quantum dot in an open microcavity
Nadia O. Antoniadis, Natasha Tomm, Tomasz Jakubczyk +6
In nanostructures, the light-matter interaction can be engineered to be chiral. In the fully quantum regime, a chiral one-dimensional atom, a photon propagating in one direction in…
Quantum Interference of Identical Photons from Remote GaAs Quantum Dots
Liang Zhai, Giang N. Nguyen, Clemens Spinnler +6
Photonic quantum technology provides a viable route to quantum communication, quantum simulation, and quantum information processing. Recent progress has seen the realisation of bo…
High quality-factor diamond-confined open microcavity
Sigurd Flågan, Daniel Riedel, Alisa Javadi +3
With a highly coherent, optically addressable electron spin, the nitrogen vacancy (NV) centre in diamond is a promising candidate for a node in a quantum network. However, the NV c…
Optically driving the radiative Auger transition
Clemens Spinnler, Liang Zhai, Giang N. Nguyen +8
In a radiative Auger process, optical decay is accompanied by simultaneous excitation of other carriers. The radiative Auger process gives rise to weak red-shifted satellite peaks…
A bright and fast source of coherent single photons
Natasha Tomm, Alisa Javadi, Nadia O. Antoniadis +8
A single photon source is a key enabling technology in device-independent quantum communication, quantum simulation for instance boson sampling, linear optics-based and measurement…
A coherent spin-photon interface with waveguide induced cycling transitions
Martin Hayhurst Appel, Alexey Tiranov, Alisa Javadi +7
Solid-state quantum dots are promising candidates for efficient light-matter interfaces connecting internal spin degrees of freedom to the states of emitted photons. However, selec…
A wave-function ansatz method for calculating field correlations and its application to the study of spectral filtering and quantum dynamics of multi-emitter systems
Sumanta Das, Liang Zhai, Mantas Čepulskovskis +4
We develop a formalism based on a time-dependent wave-function ansatz to study correlations of photons emitted from a collection of two-level quantum emitters. We show how to simul…
Coherent optical control of a quantum-dot spin-qubit in a waveguide-based spin-photon interface
Dapeng Ding, Martin Hayhurst Appel, Alisa Javadi +12
Waveguide-based spin-photon interfaces on the GaAs platform have emerged as a promising system for a variety of quantum information applications directly integrated into planar pho…
Quantum optics with near lifetime-limited quantum-dot transitions in a nanophotonic waveguide
Henri Thyrrestrup, Gabija Kiršanskė, Hanna Le Jeannic +13
Establishing a highly efficient photon-emitter interface where the intrinsic linewidth broadening is limited solely by spontaneous emission is a key step in quantum optics. It open…
Spin-photon interface and spin-controlled photon switching in a nanobeam waveguide
Alisa Javadi, Dapeng Ding, Martin Hayhurst Appel +13
Access to the electron spin is at the heart of many protocols for integrated and distributed quantum-information processing [1-4]. For instance, interfacing the spin-state of an el…
Numerical modelling of the coupling efficiency of single quantum emitters in photonic-crystal waveguides
Alisa Javadi, Sahand Mahmoodian, Immo Söllner +1
Planar photonic nanostructures have recently attracted a great deal of attention for quantum optics applications. In this article, we carry out full 3D numerical simulations to ful…
Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide
Gabija Kiršanskė, Henri Thyrrestrup, Raphaël S. Daveau +16
We demonstrate a high-purity source of indistinguishable single photons using a quantum dot embedded in a nanophotonic waveguide. The source features a near-unity internal coupling…
Single-photon nonlinear optics with a quantum dot in a waveguide
A. Javadi, I. Söllner, M. Arcari +9
Strong nonlinear interactions between photons enable logic operations for both classical and quantum-information technology. Unfortunately, nonlinear interactions are usually feebl…
Deterministic photon-emitter coupling in chiral photonic circuits
Immo Söllner, Sahand Mahmoodian, Sofie Lindskov Hansen +9
The ability to engineer photon emission and photon scattering is at the heart of modern photonics applications ranging from light harvesting, through novel compact light sources, t…
Efficient out-coupling of high-purity single photons from a coherent quantum dot in a photonic-crystal cavity
K. H. Madsen, S. Ates, J. Liu +5
We demonstrate a single-photon collection efficiency of from a quantum dot in a low-Q mode of a photonic-crystal cavity with a single-photon purity of $g^{(2)}(0)=…
Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide
M. Arcari, I. Söllner, A. Javadi +8
A quantum emitter efficiently coupled to a nanophotonic waveguide constitutes a promising system for the realization of single-photon transistors, quantum-logic gates based on gian…