6 papers · 1 filter
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 wh…
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…
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…
Stationary states of boundary driven quantum systems: some exact results
Eric A. Carlen, David a. Huse, Joel L. Lebowitz
We study finite-dimensional open quantum systems whose density matrix evolves via a Lindbladian, . Here is the Hamiltonian of the isolated system a…
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…
Molecular Entanglement Witness by Absorption Spectroscopy in Cavity QED
Weijun Wu, Francesca Fassioli, David A. Huse +1
Producing and maintaining molecular entanglement at room temperature and detecting multipartite entanglement features of macroscopic molecular systems remain key challenges for und…