20 citations · 93 across the 14 of their papers we have counts for
15 papers
Comparing quantum and classical finite state generators
Prasenjit Deb, Almut Beige, Lewis A. Clark
Bell-CHSH-like inequalities have been very successful in benchmarking {\it spatial} quantum correlations. However, as this paper illustrates, they are in general not sufficient for…
Unlocking photodetection for quantum sensing with Bayesian likelihood-free methods and deep learning
Mateusz Molenda, Lewis A. Clark, Marcin Płodzień +1
To operate quantum sensors at their quantum limit in real time, it is crucial to identify efficient data inference tools for rapid parameter estimation. In photodetection, the key…
Efficient inference of quantum system parameters by Approximate Bayesian Computation
Lewis A. Clark, Jan Kolodynski
The ability to efficiently infer system parameters is essential in any signal-processing task that requires fast operation. Dealing with quantum systems, a serious challenge arises…
Quantum physics cannot be captured by classical linear hidden variable theories even in the absence of entanglement
Kawthar Al Rasbi, Lewis A. Clark, Almut Beige
Recent experimental tests of Bell inequalities confirm that entangled quantum systems cannot be described by local classical theories but still do not answer the question whether o…
Exploiting non-linear effects in optomechanical sensors with continuous photon-counting
Lewis A. Clark, Bartosz Markowicz, Jan Kołodyński
Optomechanical systems are rapidly becoming one of the most promising platforms for observing quantum behaviour, especially at the macroscopic level. Moreover, thanks to their stat…
Quantum jump metrology in a two-cavity network
Kawthar Al Rasbi, Almut Beige, Lewis A. Clark
Quantum metrology enhances measurement precision by utilising the properties of quantum physics. In interferometry, this is typically achieved by evolving highly-entangled quantum…
Asymmetric arms maximise visibility in hot-electron interferometers
Clarissa J. Barratt, Sungguen Ryu, Lewis A. Clark +3
We consider theoretically an electronic Mach-Zehnder interferometer constructed from quantum Hall edge channels and quantum point contacts, fed with single electrons from a dynamic…
Mitigating decoherence in hot electron interferometry
Lewis A. Clark, Masaya Kataoka, Clive Emary
Due to their high energy, hot electrons in quantum Hall edge states can be considered as single particles that have the potential to be used for quantum optics-like experiments. Un…
Quantum Jump Metrology
Lewis A. Clark, Adam Stokes, Almut Beige
Quantum metrology exploits quantum correlations in specially prepared entangled or other non-classical states to perform measurements that exceed the standard quantum limit. Typica…
Energy relaxation in hot electron quantum optics via acoustic and optical phonon emission
Clive Emary, Lewis A. Clark, Masaya Kataoka +1
We study theoretically the relaxation of hot quantum-Hall edge-channel electrons under the emission of both acoustic and optical phonons. Aiming to model recent experiments with si…
Quantising the electromagnetic field near two-sided semi-transparent mirrors
Nicholas Furtak-Wells, Lewis A. Clark, Robert Purdy +1
This paper models light scattering through flat surfaces with finite transmission, reflection and absorption rates, with wave packets approaching the mirror from both sides. While…
Non-ergodicity in open quantum systems through quantum feedback
Lewis A. Clark, Fiona Torzewska, Ben Maybee +1
It is well known that quantum feedback can alter the dynamics of open quantum systems dramatically. In this paper, we show that non-ergodicity may be induced through quantum feedba…
Quantum-enhanced metrology without entanglement based on optical cavities with feedback
Lewis A. Clark, Adam Stokes, M. Mubashir Khan +2
There are a number of different strategies to measure the phase shift between two pathways of light more efficiently than suggested by the standard quantum limit. One way is to use…
Quantum-enhanced metrology with the single-mode coherent states of an optical cavity inside a quantum feedback loop
Lewis A. Clark, Adam Stokes, Almut Beige
In this paper, we use the non-linear dynamics of the individual quantum trajectories of an optical cavity inside an instantaneous quantum feedback loop to measure the phase shift b…
Hidden Quantum Markov Models and Open Quantum Systems with Instantaneous Feedback
Lewis A. Clark, Wei Huang, Thomas M. Barlow +1
Hidden Markov Models are widely used in classical computer science to model stochastic processes with a wide range of applications. This paper concerns the quantum analogues of the…