9 papers
Sequential quantum nonlocality sharing under local noisy quantum channels
Na Li, Chen-Yue Li, Yu-Hong Zheng +3
Sequential sharing of quantum nonlocality (SSQN) is crucial for device-independent tasks in quantum information processing, wherein relaying the post-measurement qubit through a lo…
Pontryagin's Principle for Leakage-Immune Adiabatic Quantum State Transfer
Xiao-Yu Dong, Xi-Lai Wang, Wen-Long Ma
The standard stimulated Raman adiabatic passage (STIRAP) protocol enables high-fidelity quantum state transfer in an ideal three-level system via adiabatic following of a dark stat…
Resource-Efficient Noise Spectroscopy for Generic Quantum Dephasing Environments
Yuan-De Jin, Zheng-Fei Ye, Wen-Long Ma
We present a resource-efficient method based on repetitive weak measurements to directly measure the noise spectrum of a generic quantum environment that causes qubit phase decoher…
Spectrum measurement of quantum channels and application to Hamiltonian parameter estimation
Yuan-De Jin, Wen-Long Ma
Quantum channels describe the most general dynamics of open quantum systems. A quantum channel, as a linear map on vectorized quantum states, can be represented by a single matrix,…
Quantum-Classical Boundary Engineering in Weak-to-Strong Measurements via Squeezed Vacua
Janarbek Yuanbek, Wen-Long Ma, Yusuf Turek
This study establishes a post-selected von Neumann framework to regulate non-classical features of single-photon-subtracted squeezed vacuum (SPSSV) and two-mode squeezed vacuum (TM…
General Approach to Error Detection of Bosonic Codes via Phase Estimation
Yuan-De Jin, Shi-Yu Zhang, Ulrik L. Andersen +1
We present a general approach to error detection of bosonic quantum error-correction codes via an adaptive quantum phase estimation algorithm assisted by a single ancilla qubit. Th…