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- Graduate School of China Academy of Engineering PhysicsCN115 papers
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- Institute of PhysicsPL29 papers
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12 papers · 2 filters
Effective temperature in approximate quantum many-body states
Yu-Qin Chen, Shi-Xin Zhang
In the pursuit of numerically identifying the ground state of quantum many-body systems, approximate quantum wavefunction ansatzes are commonly employed. This study focuses on the…
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…
Cavity dark mode mediated by atom array without atomic scattering loss
Xiaotian Zhang, Zhanhai Yu, Hongrui Zhang +2
We realize a ring cavity strongly interacting with an atom array with configurable spatial structures. By preparing the atom array with a maximized structure factor, we observe the…
Quantum-enhanced weak absorption estimation with correlated photons
Zhucheng Zhang, Xue Zhang, Jing Liu +1
Conventional absorption spectroscopy relies on coherent laser sources, and in turn suffers from the inherent limitation of shot noise, especially in estimating weak absorption. Her…
Input-Output Hierarchical Equations Of Motion
Mauro Cirio, Pengfei Liang, Neill Lambert
We derive an extended version of the hierarchical equations of motion (HEOM) to compute output physical properties of a bosonic environment, which is allowed to be initially prepar…
Time-Efficient Logical Operations on Quantum Low-Density Parity Check Codes
Guo Zhang, Ying Li
We propose schemes capable of measuring an arbitrary set of commutative logical Pauli operators in time independent of the number of operators. The only condition is commutativity,…