48 citations · 114 across the 7 of their papers we have counts for
7 papers
Noncommuting conserved charges in quantum thermodynamics and beyond
Shayan Majidy, William F. Braasch, Aleksander Lasek +3
Thermodynamic systems typically conserve quantities ("charges") such as energy and particle number. The charges are often assumed implicitly to commute with each other. Yet quantum…
Non-Abelian transport distinguishes three usually equivalent notions of entropy production
Twesh Upadhyaya, William F. Braasch, Gabriel T. Landi +1
We extend entropy production to a deeply quantum regime involving noncommuting conserved quantities. Consider a unitary transporting conserved quantities ("charges") between two sy…
A classical formulation of quantum theory?
William F. Braasch, William K. Wootters
We explore a particular way of reformulating quantum theory in classical terms, starting with phase space rather than Hilbert space, and with actual probability distributions rathe…
A quantum prediction as a collection of epistemically restricted classical predictions
William F. Braasch, William K. Wootters
Spekkens has introduced an epistemically restricted classical theory of discrete systems, based on discrete phase space. The theory manifests a number of quantum-like properties bu…
A Nonlinear Charge- and Flux-Tunable Cavity Derived from an Embedded Cooper Pair Transistor
B. L. Brock, Juliang Li, S. Kanhirathingal +4
We introduce the cavity-embedded Cooper pair transistor (cCPT), a device which behaves as a highly nonlinear microwave cavity whose resonant frequency can be tuned both by charging…
Transition probabilities and transition rates in discrete phase space
William F. Braasch, William K. Wootters
The evolution of the discrete Wigner function is formally similar to a probabilistic process, but the transition probabilities, like the discrete Wigner function itself, can be neg…
The Wigner Current for Open Quantum Systems
William F. Braasch, Oscar D. Friedman, Alexander J. Rimberg +1
We extend the Wigner current vector field (Wigner current) construct to single bosonic mode quantum systems interacting with an environment. In terms of the Wigner function quasipr…