6 papers
Frictional work and entropy production in integrable and non-integrable spin chains
Vishnu Muraleedharan Sajitha, Matthew J. Davis, L. A. Williamson
The maximum work extractable from a quantum system is achieved when the system is driven adiabatically. Frictional work then quantifies the differe…
Unblockable Communication With Gravity
Andrew J. Groszek, Charles W. Woffinden, Michael D. Harvey +2
All modern wireless communication technologies are based on electromagnetism. However, electromagnetic signals are susceptible to screening and blocking, so their availability cann…
Dark Soliton Formation as a Dark-State Phase Transition in a Dissipative Superfluid Josephson Junction Chain
Robbe Ceulemans, Samuel E. Begg, Matthew J. Davis +1
We identify and characterize a first-order dark-state phase transition between a discrete dark soliton and a uniform superfluid in a Bose-Hubbard chain with a single lossy site. Us…
Global Variational Quantum Circuits for Arbitrary Symmetric State Preparation
Liam J. Bond, Matthew J. Davis, JiÅà MináŠ+3
Quantum states that are symmetric under particle exchange play a crucial role in fields such as quantum metrology and quantum error correction. We use a variational circuit compose…
Quantum thermal machine regimes in the transverse-field Ising model
Vishnu Muraleedharan Sajitha, Bodhaditya Santra, Matthew J. Davis +1
We identify and interpret the possible quantum thermal machine regimes with a transverse-field Ising model as the working substance. In general, understanding the emergence of such…
Extracting work from coherence in a two-mode Bose-Einstein condensate
L. A. Williamson, F. Cerisola, J. Anders +1
We show how work can be extracted from number-state coherence in a two-mode Bose-Einstein condensate. With careful tuning of parameters, a sequence of thermodynamically reversible…