13 papers
Clifford disentanglers for entanglement reduction in molecular electronic structure simulations
Longfei Chang, Zibo Wu, Yunzhi Li +5
Entanglement is a key bottleneck limiting the efficiency of tensor-network and quantum simulations of molecular electronic structures. Here, we systematically assess and extend Cli…
Dismagicker: Unitary Gate for Non-Stabilizerness Reduction
Jiale Huang, Rongyi Lv, Xiangjian Qian +1
We introduce the notion of dismagicker: non-Clifford unitary gate designed to reduce the non-stabilizerness (also called magic) of quantum many-body states. Although both entanglem…
Floquet-induced bosonic pair condensate with unconventional symmetry
Zhizhen Chen, Jiale Huang, Mingpu Qin +1
In this study, we propose a dynamical pairing mechanism other than the pair-wise interactions. Starting from a two-dimensional hard-core boson model with periodically modulated hop…
On the correlation between entanglement and the negative sign problem
Ping Xu, Yang Shen, Yuan-Yao He +1
In this work, we study the correlation between entanglement and the negative sign problem in quantum Monte Carlo for the simulation of low-dimensional strongly correlated quantum m…
Disentangling Kitaev Quantum Spin Liquid
Xiang Li, Xiangjian Qian, Mingpu Qin
In this work, we investigate the Kitaev honeycomb model employing the recently developed Clifford Circuits Augmented Matrix Product States (CAMPS) method. While the model in the ga…
Disentangling critical quantum spin chains with Clifford circuits
Chaohui Fan, Xiangjian Qian, Hua-Chen Zhang +3
Clifford circuits can be utilized to disentangle quantum states with polynomial cost, thanks to the Gottesman-Knill theorem. Based on this idea, the Clifford circuits augmented mat…