7 papers
A penalty-free quantum algorithm to find energy eigenstates
Nannan Ma, Heng Dai, Jiangbin Gong
Finding eigenstates of a given many-body Hamiltonian is a long-standing challenge due to the perceived computational complexity. Leveraging on the hardware of a quantum computer ac…
Quantum Metrology via Adiabatic Control of Topological Edge States
Xingjian He, Aoqian Shi, Jianjun Liu +1
Criticality-based quantum sensing exploits hypersensitive response to system parameters near phase transition points. This work uncovers two metrological advantages offered by topo…
Bulk-edge coulping induced by a moving impurity
Baikang Yuan, Jiangbin Gong
More physics at the boundaries of a topological lattice remains to be explored for future applications of topological edge states. This work investigates the stability of topologic…
Ultrafast cooperative electronic, structural, and magnetic switching in an altermagnet
Tiangao Lu, Ao Wu, Junxiang Li +5
Femtosecond laser control of antiferromagnetic order is a cornerstone for future memory and logic devices operating at terahertz clock rates. The advent of altermagnets -- antiferr…
Breaking Peierls theorem in polyacetylene chains via topological design
Xinnan Peng, Marco Lozano, Jie Su +11
Peierls theorem postulates that a one-dimensional (1D) metallic chain must undergo a metal-to-insulator transition via lattice distortion, resulting in bond length alternation (BLA…
Non-Hermitian entanglement dip from scaling-induced exceptional criticality
Sirui Liu, Hui Jiang, Wen-Tan Xue +4
It is well established that the entanglement entropy of a critical system generally scales logarithmically with system size. Yet, in this work, we report a new class of non-Hermiti…