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2017 ; 114
(13
): 3305-3310
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Experimental comparison of two quantum computing architectures
#MMPMID28325879
Linke NM
; Maslov D
; Roetteler M
; Debnath S
; Figgatt C
; Landsman KA
; Wright K
; Monroe C
Proc Natl Acad Sci U S A
2017[Mar]; 114
(13
): 3305-3310
PMID28325879
show ga
We run a selection of algorithms on two state-of-the-art 5-qubit quantum
computers that are based on different technology platforms. One is a publicly
accessible superconducting transmon device (www. RESEARCH: ibm.com/ibm-q) with
limited connectivity, and the other is a fully connected trapped-ion system. Even
though the two systems have different native quantum interactions, both can be
programed in a way that is blind to the underlying hardware, thus allowing a
comparison of identical quantum algorithms between different physical systems. We
show that quantum algorithms and circuits that use more connectivity clearly
benefit from a better-connected system of qubits. Although the quantum systems
here are not yet large enough to eclipse classical computers, this experiment
exposes critical factors of scaling quantum computers, such as qubit connectivity
and gate expressivity. In addition, the results suggest that codesigning
particular quantum applications with the hardware itself will be paramount in
successfully using quantum computers in the future.