Quantum Computing of the Deuteron Thomas Papenbrock Progress in Ab Initio Techniques in Nuclear Physics TRIUMF, 27-Feb-2018 Research partly funded by the US Department of Energy Nuclear Physics & Quantum Computing Collaboration at ORNL Pavel Lougovski Raphael Pooser (ORNL news, October 2017) Eugene Dumitrescu Alex McCaskey Cloud quantum computing of an atomic nucleus Dumitrescu, McCaskey, Hagen, Jansen, Morris, TP, Pooser, Dean, Lougovski, arXiv:1801.03897] Classical computing: logical gates Information is physical (Landauer). Classical computing uses irreversible gates Classical gates implement logical operations (AND, OR, etc), and any function can be build from NOR gates alone. Classical computer: classical gates operate on bits (0, 1). 0 = False 1 = True What is quantum computing? Quantum computing uses qubits, i.e. two-level quantum systems Examples: • spin up / spin down • two polarization states of a photon • ion in a trap on two levels A qubit c
