TY  - JOUR
AU  - Ciani, A
AU  - Terhal, Barbara
AU  - DiVincenzo, David
TI  - Hamiltonian quantum computing with superconducting qubits
JO  - Quantum science and technology
VL  - 4
IS  - 3
SN  - 2058-9565
CY  - Philadelphia, PA
PB  - IOP Publishing
M1  - FZJ-2019-06134
SP  - 035002 -
PY  - 2019
AB  - We consider how the Hamiltonian Quantum Computing scheme introduced in (2016 New J. Phys. 18 023042) can be implemented using a 2D array of superconducting transmon qubits. We show how the scheme requires the engineering of strong attractive cross-Kerr and weak flip-flop or hopping interactions and we detail how this can be achieved. Our proposal uses a new electric circuit for obtaining the attractive cross-Kerr coupling between transmons via a dipole-like element. We discuss and numerically analyze the forward motion and execution of the computation and its dependence on coupling strengths and their variability. We extend (2016 New J. Phys. 18 023042) by explicitly showing how to construct a direct Toffoli gate, thus establishing computational universality via the Hadamard and Toffoli gate or via controlled-Hadamard, Hadamard and CNOT.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000467483300001
DO  - DOI:10.1088/2058-9565/ab18dd
UR  - https://juser.fz-juelich.de/record/867511
ER  -