248 citations · 743 across the 21 of their papers we have counts for
21 papers
Demonstration of energy extraction gain from non-classical correlations
Alexander Stahl, Michael Kewming, John Goold +3
Within the framework of microscopic thermodynamics, correlations can play a crucial role for energy extraction. Our work sheds light on this connection by demonstrating that entang…
Quantum stochastic thermodynamics in the mesoscopic-leads formulation
Laetitia P. Bettmann, Michael J. Kewming, Gabriel T. Landi +2
We introduce a numerical method to sample the distributions of charge, heat, and entropy production in open quantum systems coupled strongly to macroscopic reservoirs, with both te…
Understanding multiple timescales in quantum dissipative dynamics: Insights from quantum trajectories
Matthew Gerry, Michael J. Kewming, Dvira Segal
Open quantum systems with nearly degenerate energy levels have been shown to exhibit long-lived metastable states in the approach to equilibrium, even when modelled with certain Li…
Entropy production in the mesoscopic-leads formulation of quantum thermodynamics
Artur M. Lacerda, Michael J. Kewming, Marlon Brenes +4
Understanding the entropy production of systems strongly coupled to thermal baths is a core problem of both quantum thermodynamics and mesoscopic physics. While there exist many te…
First Passage Times for Continuous Quantum Measurement Currents
Michael J. Kewming, Anthony Kiely, Steve Campbell +1
The First Passage Time (FPT) is the time taken for a stochastic process to reach a desired threshold. In this letter we address the FPT of the stochastic measurement current in the…
Powering an autonomous clock with quantum electromechanics
Oisin Culhane, Michael J. Kewming, Alessandro Silva +2
We theoretically analyse an autonomous clock comprising a nanoelectromechanical system, which undergoes self-oscillations driven by electron tunnelling. The periodic mechanical mot…
Current fluctuations in open quantum systems: Bridging the gap between quantum continuous measurements and full counting statistics
Gabriel T. Landi, Michael J. Kewming, Mark T. Mitchison +1
Continuously measured quantum systems are characterized by an output current, in the form of a stochastic and correlated time series which conveys crucial information about the und…
Thermodynamics of a continuously monitored double quantum dot heat engine in the repeated interactions framework
Laetitia P. Bettmann, Michael J. Kewming, John Goold
Understanding the thermodynamic role of measurement in quantum mechanical systems is a burgeoning field of study. In this article, we study a double quantum dot (DQD) connected to…
Quantum Kernel Evaluation via Hong-Ou-Mandel Interference
Cassandra Bowie, Sally Shrapnel, Michael Kewming
One of the fastest growing areas of interest in quantum computing is its use within machine learning methods, in particular through the application of quantum kernels. Despite this…
Effect of Measurement Backaction on Quantum Clock Precision Studied with a Superconducting Circuit
Xin He, Prasanna Pakkiam, Adil A. Gangat +3
We theoretically and experimentally study the precision of a quantum clock near zero temperature, explicitly accounting for the effect of continuous measurement. The clock is creat…
Quantum thermodynamics with fast driving and strong coupling via the mesoscopic leads approach
Artur M. Lacerda, Archak Purkayastha, Michael Kewming +2
Understanding the thermodynamics of driven quantum systems strongly coupled to thermal baths is a central focus of quantum thermodynamics and mesoscopic physics. A variety of diffe…
Comment on "Thermodynamic Principle for Quantum Metrology"
Shane Dooley, Michael J. Kewming, Mark T. Mitchison +1
In Phys. Rev. Lett. 128, 200501 (2022) the authors consider the thermodynamic cost of quantum metrology. One of the main results is $\mathcal{S} \geq \log(2) \| h_λ\|^{-2} F_Q [ψ_λ…
Diverging current fluctuations in critical Kerr resonators
Michael J. Kewming, Mark T. Mitchison, Gabriel T. Landi
The parametrically pumped Kerr model describes a driven-dissipative nonlinear cavity, whose nonequilibrium phase diagram features both continuous and discontinuous quantum phase tr…
Measurement based estimator scheme for continuous quantum error correction
Sangkha Borah, Bijita Sarma, Michael Kewming +3
Canonical discrete quantum error correction (DQEC) schemes use projective von Neumann measurements on stabilizers to discretize the error syndromes into a finite set, and fast unit…
Entropy production and fluctuation theorems in a continuously monitored optical cavity at zero temperature
M. J. Kewming, S. Shrapnel
Fluctuation theorems allow one to make generalised statements about the behaviour of thermodynamic quantities in systems that are driven far from thermal equilibrium. In this artic…
Measurement Based Feedback Quantum Control With Deep Reinforcement Learning for Double-well Non-linear Potential
Sangkha Borah, Bijita Sarma, Michael Kewming +2
Closed loop quantum control uses measurement to control the dynamics of a quantum system to achieve either a desired target state or target dynamics. In the case when the quantum H…
Robust and Efficient High-dimensional Quantum State Tomography
Markus Rambach, Mahdi Qaryan, Michael Kewming +3
The exponential growth in Hilbert space with increasing size of a quantum system means that accurately characterising the system becomes significantly harder with system dimension…
A Physical Quantum Agent
Michael. J. Kewming, Sally Shrapnel, Gerard. J. Milburn
The concept of an embodied intelligent agent is a key concept in modern artificial intelligence and robotics. Physically, an agent is an open system embedded in an environment that…
Quantum Correlations in the Kerr Ising Model
Michael Kewming, Sally Shrapnel, Gerard Milburn
In this article we present a full description of the quantum Kerr Ising model---a linear optical network of parametrically pumped Kerr non-linearities. We consider the non-dissapat…
Hiding Ignorance Using High Dimensions
M. J. Kewming, S. Shrapnel, A. G. White +1
The absence of information -- entirely or partly -- is called ignorance. Naturally, one might ask if some ignorance of a whole system will imply some ignorance of its parts. Our cl…
Indefinite Causal Order in a Quantum Switch
K. Goswami, C. Giarmatzi, M. Kewming +4
In quantum mechanics events can happen in no definite causal order: in practice this can be verified by measuring a causal witness, in the same way that an entanglement witness ver…