Onset of Scrambling as a Dynamical Transition in Tunable-Range Quantum Circuits
Onset of Scrambling as a Dynamical Transition in Tunable-Range Quantum Circuits
复制标题
可调范围量子电路中作为动态转变的加扰的开始
DOI:
10.1103/prxquantum.4.030325
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发表时间:
2023
期刊:
影响因子:
9.7
通讯作者:
Kuriyattil S
中科院分区:
文献类型:
--
作者:
Kuriyattil S
In a fast-scrambling many-body quantum system, information is spread and entanglement is built up on a time scale that grows logarithmically with the system size. This is of fundamental interest in understanding the dynamics of many-body systems, as well as in efficiently producing entangled resource states and error-correcting codes. In this work, we identify a dynamical transition marking the onset of scrambling in quantum circuits with different levels of long-range connectivity. In particular, we show that as a function of the interaction range for circuits of different structures, the tripartite mutual information exhibits a scaling collapse around a critical point between two clearly defined regimes of different dynamical behavior. We study this transition analytically in a related long-range Brownian-circuit model and show how the transition can be mapped onto the statistical mechanics of a long-range Ising model in a particular region of parameter space. This mapping predicts mean-field critical exponents, which are consistent with the critical exponents extracted from Clifford-circuit numerics. In addition to systems with conventional power-law interactions, we identify the same phenomenon in deterministic sparse circuits that can be realized in experiments with neutral-atom arrays.
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影响因子:
1.1
作者:
P. Diaconis;R. Graham;W. Kantor
通讯作者:
W. Kantor
影响因子:
64.8
作者:
通讯作者:
--
影响因子:
2.9
作者:
J. Marino;A. Rey
通讯作者:
J. Marino;A. Rey
DOI:
--
发表时间:
1995
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
Cannas
通讯作者:
Cannas
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
S. Wimberger
通讯作者:
S. Wimberger