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Upper bounds on the Holevo Cramér-Rao bound for multiparameter quantum parametric and semiparametric estimation
Francesco Albarelli, Mankei Tsang, Animesh Datta
We formulate multiparameter quantum estimation in the parametric and semiparametric setting. While the Holevo Cramér-Rao bound (CRB) requires no substantial modifications in moving…
Quantum limits of localisation microscopy
Evangelia Bisketzi, Dominic Branford, Animesh Datta
We show that localisation microscopy of multiple weak, incoherent point sources with possibly different intensities in one spatial dimension is equivalent to estimating the amplitu…
Evaluating the Holevo Cramér-Rao bound for multi-parameter quantum metrology
Francesco Albarelli, Jamie F. Friel, Animesh Datta
Only with the simultaneous estimation of multiple parameters are the quantum aspects of metrology fully revealed. This is due to the incompatibility of observables. The fundamental…
Quantum Semiparametric Estimation
Mankei Tsang, Francesco Albarelli, Animesh Datta
In the study of quantum limits to parameter estimation, the high dimensionality of the density operator and that of the unknown parameters have long been two of the most difficult…
Towards a Spectroscopic Protocol for Unambiguous Detection of Quantum Coherence in Excitonic Energy Transport
Max Marcus, George Knee, Animesh Datta
The role of quantum effects in excitonic energy transport (EET) has been scrutinised intensely and with increasingly sophisticated experimental techniques. This increased complexit…
Quantum correlation of light mediated by gravity
Haixing Miao, Denis Martynov, Huan Yang +1
We propose to explore the quantum nature of gravity using the correlation of light between two optomechanical cavities, and the quantumness of the correlation is witnessed by squee…