2 citations · 3 across the 11 of their papers we have counts for
10 papers · 1 filter
Generating uniform quantum state ensembles with continuous measurement
Theodore McKeever, Ahsan Nazir, Harry J. D. Miller
We investigate the generation of uniform quantum state ensembles via continuous measurement. Using the Bloch representation, we derive the associated Langevin and Fokker-Pl…
Finite steps optimise dissipation in stochastically controlled quantum systems
Theodore McKeever, Harry J. D. Miller, Ahsan Nazir
Motivated by the need for precise, energy-efficient, and experimentally realistic quantum control protocols, we investigate the thermodynamic cost of performing quantum step-equili…
Operator space transport in collective spin Lindbladians
Dominik Nemeth, Ahsan Nazir, Robert-Jan Slager +1
Boundary time crystals (BTCs) are paradigmatic examples of continuous time crystals that emerge in collective, dissipative quantum systems. Their microscopic origin, however, remai…
An Introduction to the Foundations and Interpretations of Quantum Mechanics
Theodore McKeever, Ahsan Nazir
This article surveys a selection of key conceptual and interpretational developments in quantum mechanics, tracing the theory from its foundational postulates to contemporary discu…
Topological Boundary Time Crystal Oscillations
Dominik Nemeth, Ahsan Nazir, Alessandro Principi +1
Boundary time crystals (BTCs) break time-translation symmetry and exhibit long-lived, robust oscillations insensitive to initial conditions. We show that collective spin BTCs can a…
Dicke Superradiance in Extended 2D Quantum Arrays Coupled to Metasurface Bound States in the Continuum
Daniel Eyles, Emmanuel Lassalle, Adam Stokes +2
Dicke superradiance is a collective phenomenon where the emission from ensembles of quantum emitters is coherently enhanced beyond the sum of each emitter's independent emission. H…
Sampling methods to describe superradiance in large ensembles of quantum emitters
Daniel Eyles, Emmanuel Lassalle, Adam Stokes +2
Superradiance is a quantum phenomenon in which coherence between emitters results in enhanced and directional radiative emission. Many quantum optical phenomena can be characterize…
Analytical solution of boundary time crystals via the superspin basis
Dominik Nemeth, Alessandro Principi, Ahsan Nazir
Boundary time crystals (BTCs) in dissipative collective spin systems have been extensively studied using numerical, mean-field, and perturbative approaches. However, an explicit Li…
Long-range quantum emitter interactions mediated by a non-local metasurface: Application to qubit-qubit entanglement
Hannah Riley, Emmanuel Lassalle, Diego Romero Abujetas +3
Scalable quantum technologies demand long-range interactions between many distant quantum emitters (QEs). We introduce non-local metasurfaces supporting bound-states-in-the-continu…
A Finite-Time Quantum Otto Engine subject to Control Noise and Enhancement Techniques
Theodore McKeever, Owen Diba, Ahsan Nazir
With the development of any quantum technology comes a need for precise control of quantum systems. Here, we evaluate the impact of control noise on a quantum Otto cycle. Whilst it…