Condensed Matter Seminar Series
Many-body Effects in Multi-qubit Arrays
Dmitri Khveshchenko
University of North Carolina
Thursday September 25, 1h30 pm, Room 234, Physics Building
Host: Eduardo Mucciolo
Abstract: We study the problem of decoherence in (pseudo)spin
systems that can be relevant for various aspects of quantum
information processing: one- and one-two qubit gates as well as
one-dimensional systems of many coupled qubits which are exposed to
generic dissipative environments. We utilize some quantum many-body
techniques (Jordan-Wigner representation and spinon basis in
one-dimensional spin chains, Kondo-like quantum impurity models,
optimization algorithms, etc.) in order to evaluate the relevant rates
of coherence decay and identify the optimal regime of parameters for
operating a robust quantum register.