53 citations · 158 across the 17 of their papers we have counts for
13 papers · 1 filter
Complete product-state contact set and optimality of the canonical three-qubit Shifts witness
Bing-Dong Wan, Yu-Chen Guo
For the three-qubit Shifts unextendible product basis (UPB), the minimum product-state expectation value of the UPB projector is known, and four a…
Parent Hamiltonian and intrinsic phase transition in non-Hermitian photonic systems
Yuntao Xiao, Yuchen Guo, Xiaojian Huang +6
Non-Hermitian systems host phenomena absent in Hermitian physics, but realizing Hamiltonians with intrinsic non-Hermitian properties remains challenging. The theoretical method of…
Tensor network characterization and mitigation of readout errors
Yuchen Guo, Shuo Yang
Readout errors are a major bottleneck to extracting reliable information from near-term quantum processors, especially when spatial correlations are non-negligible. We present a un…
Quantum criticality in open quantum systems from the purification perspective
Yuchen Guo, Shuo Yang
Open quantum systems host mixed-state phases that go beyond the symmetry-protected topological and spontaneous symmetry-breaking paradigms established for closed, pure-state system…
Efficient Quantum Circuit Compilation for Near-Term Quantum Advantage
Yuchen Guo, Shuo Yang
Quantum noise in real-world devices poses a significant challenge in achieving practical quantum advantage, since accurately compiled and executed circuits are typically deep and h…
A New Framework for Quantum Phases in Open Systems: Steady State of Imaginary-Time Lindbladian Evolution
Yuchen Guo, Ke Ding, Shuo Yang
This study delves into the concept of quantum phases in open quantum systems, examining the shortcomings of existing approaches that focus on steady states of Lindbladians and high…
Locally purified density operators for noisy quantum circuits
Yuchen Guo, Shuo Yang
Simulating open quantum systems is essential for exploring novel quantum phenomena and evaluating noisy quantum circuits. In this Letter, we address the problem of whether mixed st…
Quantum State Tomography with Locally Purified Density Operators and Local Measurements
Yuchen Guo, Shuo Yang
Understanding quantum systems is of significant importance for assessing the performance of quantum hardware and software, as well as exploring quantum control and quantum sensing.…
Triggering Boundary Phase Transitions through Bulk Measurements in 2D Cluster States
Yuchen Guo, Jian-Hao Zhang, Zhen Bi +1
We investigate the phase diagram at the boundary of an infinite two-dimensional cluster state subject to bulk measurements using tensor network methods. The state is subjected to u…
Composite Quantum Phases in Non-Hermitian Systems
Yuchen Guo, Ruohan Shen, Shuo Yang
Non-Hermitian systems have attracted considerable interest in recent years owing to their unique topological properties that are absent in Hermitian systems. While such properties…
Construction of Non-Hermitian Parent Hamiltonian from Matrix Product States
Ruohan Shen, Yuchen Guo, Shuo Yang
There are various research strategies used for non-Hermitian systems, which typically involve introducing non-Hermitian terms to pre-existing Hermitian Hamiltonians. It can be chal…
Noise effects on purity and quantum entanglement in terms of physical implementability
Yuchen Guo, Shuo Yang
Quantum decoherence due to imperfect manipulation of quantum devices is a key issue in the noisy intermediate-scale quantum (NISQ) era. Standard analyses in quantum information and…
Quantum error mitigation via matrix product operators
Yuchen Guo, Shuo Yang
In the era of noisy intermediate-scale quantum (NISQ) devices, the number of controllable hardware qubits is insufficient to implement quantum error correction (QEC). As an alterna…