4 papers
Vari-Cool: a non-unitary quantum variational protocol for simulated cooling
Jeffrey Z. Song, Gilad Kishony, Erez Berg +1
We introduce a variational approach for preparing low energy states of arbitrary target Hamiltonians. The protocol is defined in terms of a repeated cycle consisting of p layers of…
Increasing the distance of topological codes with time vortex defects
Gilad Kishony, Erez Berg
We propose modifying topological quantum error correcting codes by incorporating space-time defects, termed ``time vortices,'' to reduce the number of physical qubits required to a…
Topological excitations at time vortices in periodically driven systems
Gilad Kishony, Ori Grossman, Netanel Lindner +2
We consider two-dimensional periodically driven systems of fermions with particle-hole symmetry. Such systems support non-trivial topological phases, including ones that cannot be…
Efficiently preparing chiral states via fermionic cooling on bosonic quantum hardware
Gilad Kishony, Mark S. Rudner, Erez Berg
Simulating many-body systems is one of the most promising applications of near-term quantum computers. An important open question is how to efficiently prepare the ground states of…