3 papers
quant-ph2020
The Heisenberg limit for laser coherence
Travis J. Baker, S. N. Saadatmand, Dominic W. Berry +1
To quantify quantum optical coherence requires both the particle- and wave-natures of light. For an ideal laser beam [1,2,3], it can be thought of roughly as the number of photons…
cond-mat.stat-mech2019
Thermodynamics from first principles: correlations and nonextensivity
S. N. Saadatmand, Tim Gould, E. G. Cavalcanti +1
The standard formulation of thermostatistics, being based on the Boltzmann-Gibbs distribution and logarithmic Shannon entropy, describes idealized uncorrelated systems with extensi…
cond-mat.str-el2018
Phase diagram of the quantum Ising model with long-range interactions on an infinite-cylinder triangular lattice
S. N. Saadatmand, S. D. Bartlett, I. P. McCulloch
Obtaining quantitative ground-state behavior for geometrically-frustrated quantum magnets with long-range interactions is challenging for numerical methods. Here, we demonstrate th…