6 papers · 1 filter
Crystalline Spectral Form Factors
Dmitrii A. Trunin, David A. Huse
We investigate crystalline-like behavior of the spectral form factor in unitary quantum systems with extremely strong eigenvalue repulsion. Using a low-temperature Coulomb gas as a…
Boundary-driven quantum systems near the Zeno limit: steady states and long-time behavior
Eric A. Carlen, David A. Huse, Joel L. Lebowitz
We study composite open quantum systems with a finite-dimensional state space governed by a Lindblad equation …
Observation of a Fault Tolerance Threshold with Concatenated Codes
Grace M. Sommers, Michael Foss-Feig, David Hayes +2
We introduce a fault-tolerant protocol for code concatenation of a generalized Shor code using a butterfly network architecture with high noise thresholds and low ancilla overhead…
Dynamically generated concatenated codes and their phase diagrams
Grace M. Sommers, David A. Huse, Michael J. Gullans
We formulate code concatenation as the action of a unitary quantum circuit on an expanding tree geometry and find that for certain classes of gates, applied identically at each nod…
Quantum coarsening and collective dynamics on a programmable simulator
Tom Manovitz, Sophie H. Li, Sepehr Ebadi +15
Understanding the collective quantum dynamics of nonequilibrium many-body systems is an outstanding challenge in quantum science. In particular, dynamics driven by quantum fluctuat…
Roughening Transition in Quantum Circuits
Hyunsoo Ha, David A. Huse, Grace M. Sommers
We explore a roughening phase transition that occurs in the entanglement dynamics of certain quantum circuits. Viewing entanglement as the free energy of a membrane in a circuit-de…