123 citations · 1.3k across the 55 of their papers we have counts for
33 papers · 1 filter
Enhancing ultracold atomic batteries using many-body resonances
Duc Tuan Hoang, Thomas Busch, Thomás Fogarty
We study the charging performance of a one-dimensional many-body bosonic quantum battery coupled to a harmonic-oscillator charger. In the weak-coupling regime, we show that the bat…
Boosting the performance of a Lipkin-Meshkov-Glick quantum battery via symmetry-breaking quenches or a single-mode bosonic charger
Le Bin Ho, Duc Tuan Hoang, Tran Duong Anh-Tai +2
We explore the operation of quantum batteries in the Lipkin-Meshkov-Glick (LMG) model, when they are charged either through a sudden quench in the magnetic field strength or by cou…
Roadmap on Quantum Thermodynamics
Steve Campbell, Irene D'Amico, Mario A. Ciampini +66
The last two decades has seen quantum thermodynamics become a well established field of research in its own right. In that time, it has demonstrated a remarkably broad applicabilit…
Leveraging quantum statistics to enhance heat engines
Keerthy Menon, Thomas Busch, Thomás Fogarty
A key focus of designing quantum thermal devices is the potential advantage that can be gleaned from genuine quantum effects when compared to classical devices. The recent experime…
Quench dynamics in topologically non-trivial quantum many-body systems
Sarika Sasidharan Nair, Giedrius Žlabys, Wen-Bin He +2
We investigate the nonequilibrium dynamics of a groundstate fermionic many body gas subjected to a quench between parameter regimes of a topologically nontrivial Hamiltonian. By fo…
High fidelity control of a many-body Tonks--Girardeau gas with an effective mean-field approach
Muhammad S. Hasan, Thomás Fogarty, Jing Li +2
Shortcuts to adiabaticity (STA) are powerful tools that can be used to control quantum systems with high fidelity. They work particularly well for single particle and non-interacti…
Dynamical invariant based shortcut to equilibration in open quantum systems
Mohamed Boubakour, Shimpei Endo, Thomás Fogarty +1
We propose using the dynamical invariant also known as the Lewis-Riesenfeld invariant, to speed-up the equilibration of a driven open quantum system. This allows us to reverse engi…
Variational quantum algorithm for ergotropy estimation in quantum many-body batteries
Duc Tuan Hoang, Friederike Metz, Andreas Thomasen +3
Quantum batteries are predicted to have the potential to outperform their classical counterparts and are therefore an important element in the development of quantum technologies.…
Quantum chaos in interacting Bose-Bose mixtures
Tran Duong Anh-Tai, Mathias Mikkelsen, Thomas Busch +1
The appearance of chaotic quantum dynamics significantly depends on the symmetry properties of the system, and in cold atomic systems many of these can be experimentally controlled…
Interaction enhanced quantum heat engine
Mohamed Boubakour, Thomás Fogarty, Thomas Busch
We study a minimal quantum Otto heat engine, where the working medium consists of an interacting few-body system in a harmonic trap. This allows us to consider the interaction stre…
Entropy of the quantum work distribution
Anthony Kiely, Eoin O'Connor, Thomás Fogarty +2
The statistics of work done on a quantum system can be quantified by the two-point measurement scheme. We show how the Shannon entropy of the work distribution admits a general upp…
Quantum control and quantum speed limits in supersymmetric potentials
Christopher Campbell, Jing Li, Thomas Busch +1
Supersymmetry allows one to build a hierarchy of Hamiltonians that share the same spectral properties and which are pairwise connected through common superpotentials. The iso-spect…
Nonequilibrium many-body dynamics in supersymmetric quenching
Christopher Campbell, Thomás Fogarty, Thomas Busch
We study the dynamics induced by quenching an ultracold quantum many-body system between two supersymmetric Hamiltonians. Such a quench can be created by carefully changing the ext…
Probing the edge between integrability and quantum chaos in interacting few-atom systems
Thomás Fogarty, Miguel Ángel García-March, Lea F. Santos +1
Interacting quantum systems in the chaotic domain are at the core of various ongoing studies of many-body physics, ranging from the scrambling of quantum information to the onset o…
Connecting scrambling and work statistics for short-range interactions in the harmonic oscillator
Mathias Mikkelsen, Thomás Fogarty, Thomas Busch
We investigate the relationship between information scrambling and work statistics after a quench for the paradigmatic example of short-range interacting particles in a one-dimensi…
A many-body heat engine at criticality
Thomás Fogarty, Thomas Busch
We show that a quantum Otto cycle in which the medium, an interacting ultracold gas, is driven between a superfluid and an insulating phase can outperform similar single particle c…
A Feshbach engine in the Thomas-Fermi regime
Tim Keller, Thomás Fogarty, Jing Li +1
Bose-Einstein condensates can be used to produce work by tuning the strength of the interparticle interactions with the help of Feshbach resonances. In inhomogeneous potentials, th…
In situ thermometry of a cold Fermi gas via dephasing impurities
Mark T. Mitchison, Thomàs Fogarty, Giacomo Guarnieri +3
The precise measurement of low temperatures is a challenging, important and fundamental task for quantum science. In particular, in-situ thermometry is highly desirable for cold at…
Orthogonality Catastrophe as a Consequence of the Quantum Speed Limit
Thomás Fogarty, Sebastian Deffner, Thomas Busch +1
A remarkable feature of quantum many-body systems is the orthogonality catastrophe which describes their extensively growing sensitivity to local perturbations and plays an importa…
Effects of coherence on quantum speed limits and shortcuts to adiabaticity in many-particle systems
Tian-Niu Xu, Jing Li, Thomas Busch +2
We discuss the effects of many-body coherence on the speed of evolution of ultracold atomic gases and the relation to quantum speed limits. Our approach is focused on two related s…
Fast control of interactions in an ultracold two atom system: Managing correlations and irreversibility
Thomás Fogarty, Lewis Ruks, Jing Li +1
We design and explore a shortcut to adiabaticity (STA) for changing the interaction strength between two ultracold, harmonically trapped bosons. Starting from initially uncorrelate…
An efficient non-linear Feshbach engine
Jing Li, Thomás Fogarty, Steve Campbell +2
We investigate a thermodynamic cycle using a Bose-Einstein condensate with nonlinear interactions as the working medium. Exploiting Feshbach resonances to change the interaction st…
Optomechanics with a position-modulated Kerr-type nonlinear coupling
M. Mikkelsen, T. Fogarty, J. Twamley +1
Cavity optomechanics has proven to be a field of research rich with possibilities for studying motional cooling, squeezing, quantum entanglement and metrology in solid state system…
Probing the out-of-equilibrium dynamics of two interacting atoms
Tim Keller, Thomás Fogarty
We study the out-of-equilibrium dynamics of two interacting atoms in a one-dimensional harmonic trap after a quench by a tightly pinned impurity atom. We make use of an approximate…