Authors
Benjamin Chiaro, C Neill, A Bohrdt, Michele Filippone, F Arute, K Arya, R Babbush, D Bacon, J Bardin, R Barends, S Boixo, D Buell, B Burkett, Y Chen, Z Chen, R Collins, A Dunsworth, E Farhi, A Fowler, B Foxen, C Gidney, M Giustina, M Harrigan, T Huang, S Isakov, E Jeffrey, Z Jiang, D Kafri, K Kechedzhi, J Kelly, P Klimov, A Korotkov, F Kostritsa, D Landhuis, E Lucero, J McClean, X Mi, A Megrant, M Mohseni, J Mutus, M McEwen, O Naaman, M Neeley, M Niu, A Petukhov, C Quintana, N Rubin, D Sank, K Satzinger, T White, Z Yao, P Yeh, A Zalcman, V Smelyanskiy, H Neven, S Gopalakrishnan, D Abanin, M Knap, J Martinis, P Roushan
Publication date
2022/2/22
Journal
Physical Review Research
Volume
4
Issue
1
Pages
013148
Publisher
American Physical Society
Description
The interplay of interactions and strong disorder can lead to an exotic quantum many-body localized (MBL) phase of matter. Beyond the absence of transport, the MBL phase has distinctive signatures, such as slow dephasing and logarithmic entanglement growth; they commonly result in slow and subtle modifications of the dynamics, rendering their measurement challenging. Here, we experimentally characterize these properties of the MBL phase in a system of coupled superconducting qubits. By implementing phase sensitive techniques, we map out the structure of local integrals of motion in the MBL phase. Tomographic reconstruction of single and two-qubit density matrices allows us to determine the spatial and temporal entanglement growth between the localized sites. In addition, we study the preservation of entanglement in the MBL phase. The interferometric protocols implemented here detect affirmative …
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Scholar articles
B Chiaro, C Neill, A Bohrdt, M Filippone, F Arute… - Physical Review Research, 2022
