Mixed-state entanglement from local randomized measurements
We propose a method for detecting bipartite entanglement in a many-body mixed state
based on estimating moments of the partially transposed density matrix. The estimates are …
based on estimating moments of the partially transposed density matrix. The estimates are …
Statistical methods for quantum state verification and fidelity estimation
The efficient and reliable certification of quantum states is essential for various quantum
information processing tasks as well as for the general progress on the implementation of …
information processing tasks as well as for the general progress on the implementation of …
Symmetry-resolved dynamical purification in synthetic quantum matter
When a quantum system initialized in a product state is subjected to either coherent or
incoherent dynamics, the entropy of any of its connected partitions generically increases as …
incoherent dynamics, the entropy of any of its connected partitions generically increases as …
Single-copies estimation of entanglement negativity
Entanglement plays a central role in quantum information processing and quantum physics.
However, few effective ways are known to detect the amount of entanglement of an unknown …
However, few effective ways are known to detect the amount of entanglement of an unknown …
Quantum scrambling with classical shadows
Quantum dynamics is of fundamental interest and has implications in quantum information
processing. The four-point out-of-time-ordered correlator (OTOC) is traditionally used to …
processing. The four-point out-of-time-ordered correlator (OTOC) is traditionally used to …
Quantum verification and estimation with few copies
As quantum technologies advance, the ability to generate increasingly large quantum states
has experienced rapid development. In this context, the verification and estimation of large …
has experienced rapid development. In this context, the verification and estimation of large …
General framework for verifying pure quantum states in the adversarial scenario
Bipartite and multipartite entangled states are of central interest in quantum information
processing and foundational studies. Efficient verification of these states, especially in the …
processing and foundational studies. Efficient verification of these states, especially in the …
Direct fidelity estimation of quantum states using machine learning
X Zhang, M Luo, Z Wen, Q Feng, S Pang, W Luo… - Physical Review Letters, 2021 - APS
In almost all quantum applications, one of the key steps is to verify that the fidelity of the
prepared quantum state meets expectations. In this Letter, we propose a new approach …
prepared quantum state meets expectations. In this Letter, we propose a new approach …
Robust and efficient verification of graph states in blind measurement-based quantum computation
Blind quantum computation (BQC) is a secure quantum computation method that protects
the privacy of clients. Measurement-based quantum computation (MBQC) is a promising …
the privacy of clients. Measurement-based quantum computation (MBQC) is a promising …
Efficient verification of Dicke states
Among various multipartite entangled states, Dicke states stand out because their
entanglement is maximally persistent and robust under particle losses. Although they have …
entanglement is maximally persistent and robust under particle losses. Although they have …