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Analytic and numerical demonstration of quantum self-correction in the 3D Cubic Code
Sergey Bravyi, Jeongwan Haah
A big open question in the quantum information theory concerns feasibility of a self-correcting quantum memory. A quantum state recorded in such memory can be stored reliably for a…
Classical simulation of dissipative fermionic linear optics
Sergey Bravyi, Robert Koenig
Fermionic linear optics is a limited form of quantum computation which is known to be efficiently simulable on a classical computer. We revisit and extend this result by enlarging…
Disorder-assisted error correction in Majorana chains
Sergey Bravyi, Robert Koenig
It was recently realized that quenched disorder may enhance the reliability of topological qubits by reducing the mobility of anyons at zero temperature. Here we compute storage ti…
On the energy landscape of 3D spin Hamiltonians with topological order
Sergey Bravyi, Jeongwan Haah
We explore feasibility of a quantum self-correcting memory based on 3D spin Hamiltonians with topological quantum order in which thermal diffusion of topological defects is suppres…
Schrieffer-Wolff transformation for quantum many-body systems
Sergey Bravyi, David DiVincenzo, Daniel Loss
The Schrieffer-Wolff (SW) method is a version of degenerate perturbation theory in which the low-energy effective Hamiltonian H_{eff} is obtained from the exact Hamiltonian by a un…