Journal Article

FZJ-2019-06134

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hamiltonian quantum computing with superconducting qubits

Ciani, A. ; Terhal, B.FZJ* ; DiVincenzo, D. (Corresponding author)FZJ*

2019
IOP Publishing Philadelphia, PA

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Please use a persistent id in citations: http://hdl.handle.net/2128/23540  doi:10.1088/2058-9565/ab18dd

Abstract: 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.

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Contributing Institute(s):

1. JARA Institut Quanteninformation (PGI-11)
2. Theoretische Nanoelektronik (PGI-2)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)

Appears in the scientific report 2019

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Database coverage:
; Clarivate Analytics Master Journal List ; Emerging Sources Citation Index ; Web of Science Core Collection

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