6 papers
PT-symmetry breaking phase transitions in an LMG dimer
Simon Kothe, Christopher Oliver, Peter Kirton
The open Lipkin-Meshkov-Glick (LMG) model provides a prototype of a dissipative phase transition which can be analyzed using mean-field theory. By combining the physics of this mod…
Quantum-gas microscopy and Talbot interferometry of the Bose-glass phase
Lennart Koehn, Christopher Parsonage, Callum W. Duncan +6
Disordered potentials fundamentally affect transport and coherence in quantum systems, giving rise to a Bose-glass phase in interacting bosonic systems -- an insulating yet compres…
Mott-insulating phases of the Bose-Hubbard model on quasi-1D ladder lattices
Lorenzo Carfora, Callum W. Duncan, Stefan Kuhr +1
We calculate the phase diagram of the Bose-Hubbard model on a half-filled ladder lattice including the effect of finite on-site interactions. This shows that the rung-Mott insulato…
Collective Enhancement of Photon Blockade via Two-Photon Interactions
Lijuan Dong, Aanal Jayesh Shah, Peter Kirton +2
Analogous to Coulomb blockade for electrons, photon blockade is a key quantum optical effect in which the presence of one photon prevents the transmission of subsequent ones throug…
Superfluorescent upconversion nanoparticles as an emerging second generation quantum technology material
Lewis E. MacKenzie, Peter Kirton
Superfluorescence (SF) in lanthanide doped upconversion nanoparticles (UCNPs) is a room-temperature quantum phenomenon, first discovered in 2022. In a SF process, the many emissive…
Dissipative Phase Transition in the Two-Photon Dicke Model
Aanal Jayesh Shah, Peter Kirton, Simone Felicetti +1
We explore the dissipative phase transition of the two-photon Dicke model, a topic that has garnered significant attention recently. Our analysis reveals that while single-photon l…