3 papers
quant-ph2026
Analysis of Superradiance-Based Quantum Metrology under Independent Markovian Pure Dephasing
Yasunari Sakuma, Yuichiro Matsuzaki, Hoi-Kwan Lau +1
Recently, a DC magnetometry protocol utilizing -spin-ensemble superradiance was proposed. This method physically amplifies the acquired signal, suppressing estimation errors fro…
quant-ph2026
Discrete-variable assisted error correction of continuous-variable quantum information
Negin Razian, En-Jui Chang, Hoi-Kwan Lau
Robust continuous-variable (CV) quantum information processing requires correcting realistic errors in bosonic systems, but all existing schemes rely on auxiliary Gottesman-Kitaev-…
quant-ph2025
Exact quantification of bipartite entanglement in unresolvable spin ensembles
Tzu-Wei Kuo, Hoi-Kwan Lau
Quantifying mixed-state entanglement in many-body systems has been a formidable task. In this work, we quantify the entanglement of states in unresolvable spin ensembles, which are…