Efficient computation of the Nagaoka–Hayashi bound for multiparameter estimation with separable measurements

• Main Authors: Conlon, Lorcán O., Suzuki, Jun, Lam, Ping Koy, Assad, Syed Muhamad
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2021
• Subjects: Science::Physics; Quantum Information; Quantum Metrology
• Online Access: https://hdl.handle.net/10356/153821
• Institution: Nanyang Technological University

Finding the optimal attainable precisions in quantum multiparameter metrology is a non-trivial problem. One approach to tackling this problem involves the computation of bounds which impose limits on how accurately we can estimate certain physical quantities. One such bound is the Holevo Cramér–Rao...