2 papers
quant-ph2026
Variational Probe and Measurement Optimization for Structured Phase Estimation
Priyam Srivastava, Vivek Kumar, Gurudev Dutt +1
We present a proof-of-principle study of variational quantum sensing for estimating a structured linear function of local phase parameters, in which each qubit in a spin-1/2 array…
quant-ph2026
Variational Joint Magnetometry and Gradiometry on Dipolar Spin Chains
Priyam Srivastava, Xin Jin, Junyu Liu +4
Estimating a uniform magnetic field B0 and its spatial gradient g on a dipolar-coupled spin chain calls for a multiparameter figure of merit. The GHZ state, optimal for single-para…