1 citations · 1 across the 7 of their papers we have counts for
9 papers
Entanglement transitions in translation-invariant tensor networks
Yi-Cheng Wang, Samuel J. Garratt, Ehud Altman
We study the complexity of approximately contracting translation-invariant tensor networks. The computational cost of row-by-row tensor network contraction, which defines a discret…
Quantum matter is weakly entangled at low energies
Samuel J. Garratt, Dmitry A. Abanin
We construct upper bounds on entanglement entropies of many-body quantum states that have fixed energy expectation values with respect to geometrically local Hamiltonians. Our focu…
Intrinsic Error Thresholds in Nearly Critical Toric Codes
Zack Weinstein, Samuel J. Garratt
We study the protection of information in nearly critical topological quantum codes, constructed by perturbing topological stabilizer codes towards continuous quantum phase transit…
Stability of quantum chaos against weak non-unitarity
Yi-Cheng Wang, Ehud Altman, Samuel J. Garratt
We study the quantum dynamics generated by the repeated action of a non-unitary evolution operator on a system of qubits. Breaking unitarity can lead to the purification of mixed i…
Fractional quantum Hall states under density decoherence
Zijian Wang, Ruihua Fan, Tianle Wang +2
Fractional quantum Hall states are promising platforms for topological quantum computation due to their capacity to encode quantum information in topologically degenerate ground st…
Lower bounds on the complexity of preparing mixed states
Max McGinley, Samuel J. Garratt
We establish a relationship between the correlations in a many-qubit mixed state and the minimum circuit depth needed for its preparation. If the mutual information between two sub…