Non-linear quantum-classical scheme to simulate non-equilibrium strongly correlated fermionic many-body dynamics
Scientific Reports Nature Publishing Group 6 (2016) 32940
Abstract:
We propose a non-linear, hybrid quantum-classical scheme for simulating non-equilibrium dynamics of strongly correlated fermions described by the Hubbard model in a Bethe lattice in the thermodynamic limit. Our scheme implements non-equilibrium dynamical mean field theory (DMFT) and uses a digital quantum simulator to solve a quantum impurity problem whose parameters are iterated to self-consistency via a classically computed feedback loop where quantum gate errors can be partly accounted for. We analyse the performance of the scheme in an example case.Few-qubit quantum-classical simulation of strongly correlated lattice fermions
EPJ Quantum Technology Springer 3 (2016)
Abstract:
We study a proof-of-principle example of the recently proposed hybrid quantum-classical simulation of strongly correlated fermion models in the thermodynamic limit. In a “two-site” dynamical mean-field theory (DMFT) approach we reduce the Hubbard model to an effective impurity model subject to self-consistency conditions. The resulting minimal two-site representation of the non-linear hybrid setup involves four qubits implementing the impurity problem, plus an ancilla qubit on which all measurements are performed. We outline a possible implementation with superconducting circuits feasible with near-future technology.Light-induced superconductivity in metallic K3 C60
Optics InfoBase Conference Papers (2016)
Abstract:
Resonant excitation of local molecular vibrations at mid-infrared wavelengths is shown to induce a transient superconducting state in the organic superconductor K3C60 for temperatures far above the equilibrium critical temperature.Possible Light-induced Superconductivity in Metallic K3C60
2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) (2016)
Parametric amplification of a superconducting plasma wave
Nature Physics Nature Publishing Group 12 (2016) 1012-1016