Details
| Original language | English |
|---|---|
| Article number | 160601 |
| Journal | Physical Review Letters |
| Volume | 133 |
| Issue number | 16 |
| Publication status | Published - 16 Oct 2024 |
Abstract
Quantum states picked from nontrivial symmetry-protected topological (SPT) phases have computational power in measurement-based quantum computation. This power is uniform across SPT phases, and is unlocked by measurements that break the symmetry. Except at special points in the phase, all computational schemes known to date place these symmetry-breaking measurements far apart, to avoid the correlations introduced by spurious, nonuniversal entanglement. In this work, we investigate the opposite regime of computation where the symmetry-breaking measurements are packed densely. We show that not only does the computation still function, but in fact, under reasonable physical assumptions, this is the most resource efficient mode.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Letters, Vol. 133, No. 16, 160601, 16.10.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Counterintuitive Yet Efficient Regimes for Measurement-Based Quantum Computation on Symmetry-Protected Spin Chains
AU - Adhikary, Arnab
AU - Yang, Wang
AU - Raussendorf, Robert
N1 - Publisher Copyright: © 2024 American Physical Society.
PY - 2024/10/16
Y1 - 2024/10/16
N2 - Quantum states picked from nontrivial symmetry-protected topological (SPT) phases have computational power in measurement-based quantum computation. This power is uniform across SPT phases, and is unlocked by measurements that break the symmetry. Except at special points in the phase, all computational schemes known to date place these symmetry-breaking measurements far apart, to avoid the correlations introduced by spurious, nonuniversal entanglement. In this work, we investigate the opposite regime of computation where the symmetry-breaking measurements are packed densely. We show that not only does the computation still function, but in fact, under reasonable physical assumptions, this is the most resource efficient mode.
AB - Quantum states picked from nontrivial symmetry-protected topological (SPT) phases have computational power in measurement-based quantum computation. This power is uniform across SPT phases, and is unlocked by measurements that break the symmetry. Except at special points in the phase, all computational schemes known to date place these symmetry-breaking measurements far apart, to avoid the correlations introduced by spurious, nonuniversal entanglement. In this work, we investigate the opposite regime of computation where the symmetry-breaking measurements are packed densely. We show that not only does the computation still function, but in fact, under reasonable physical assumptions, this is the most resource efficient mode.
UR - http://www.scopus.com/inward/record.url?scp=85207793697&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2307.08903
DO - 10.48550/arXiv.2307.08903
M3 - Article
C2 - 39485977
AN - SCOPUS:85207793697
VL - 133
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 16
M1 - 160601
ER -