734 citations · 6k across the 61 of their papers we have counts for
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Limits on the storage of quantum information in a volume of space
Steven T. Flammia, Jeongwan Haah, Michael J. Kastoryano +1
We study the fundamental limits on the reliable storage of quantum information in lattices of qubits by deriving tradeoff bounds for approximate quantum error correcting codes. We…
Quantum Entanglement Growth Under Random Unitary Dynamics
Adam Nahum, Jonathan Ruhman, Sagar Vijay +1
Characterizing how entanglement grows with time in a many-body system, for example after a quantum quench, is a key problem in non-equilibrium quantum physics. We study this proble…
Spectrum estimation of density operators with alkaline-earth atoms
Michael E. Beverland, Jeongwan Haah, Gorjan Alagic +3
We show that Ramsey spectroscopy of fermionic alkaline-earth atoms in a square-well trap provides an efficient and accurate estimate for the eigenspectrum of a density matrix whose…
Algebraic Methods for Quantum Codes on Lattices
Jeongwan Haah
This is a note from a series of lectures at Encuentro Colombiano de Computacion Cuantica, Universidad de los Andes, Bogota, Colombia, 2015. The purpose is to introduce additive qua…
Spurious Long-range Entanglement and Replica Correlation Length
Liujun Zou, Jeongwan Haah
Topological entanglement entropy has been regarded as a smoking-gun signature of topological order in two dimensions, capturing the total quantum dimension of the topological parti…
Fracton Topological Order, Generalized Lattice Gauge Theory and Duality
Sagar Vijay, Jeongwan Haah, Liang Fu
We introduce a generalization of conventional lattice gauge theory to describe fracton topological phases, which are characterized by immobile, point-like topological excitations,…