4 papers
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…
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-…
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…
Quantum error correction for an unresolvable spin ensemble
Harsh Sharma, Himadri Shekhar Dhar, Hoi-Kwan Lau
Spin ensembles are promising quantum technological platforms, but their utility relies on the ability to perform quantum error correction (QEC) for the specific decoherence in thes…