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Information scrambling in chaotic systems with dissipation
Yong-Liang Zhang, Yichen Huang, Xie Chen
Chaotic dynamics in closed local quantum systems scrambles quantum information, which is manifested quantitatively in the decay of the out-of-time-ordered correlators (OTOC) of loc…
Matrix Product Representation of Locality Preserving Unitaries
M. Burak Şahinoğlu, Sujeet K. Shukla, Feng Bi +1
The matrix product representation provides a useful formalism to study not only entangled states, but also entangled operators in one dimension. In this paper, we focus on unitary…
Quantum circuit complexity of one-dimensional topological phases
Yichen Huang, Xie Chen
Topological quantum states cannot be created from product states with local quantum circuits of constant depth and are in this sense more entangled than topologically trivial state…
Fermionic Measurement-based Quantum Computation
Yu-Ju Chiu, Xie Chen, Isaac L. Chuang
Fermions, as a major class of quantum particles, provide platforms for quantum information processing beyond the possibilities of spins or bosons which have been studied more exten…
Quantum codes give counterexamples to the unique pre-image conjecture of the N-representability problem
Samuel A. Ocko, Xie Chen, Bei Zeng +4
It is well known that the ground state energy of many-particle Hamiltonians involving only 2-body interactions can be obtained using constrained optimizations over density matrices…
No-go Theorem for One-way Quantum Computing on Naturally Occurring Two-level Systems
Jianxin Chen, Xie Chen, Runyao Duan +2
One-way quantum computing achieves the full power of quantum computation by performing single particle measurements on some many-body entangled state, known as the resource state.…