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Recent advances in quantum information and quantum science have inspired thedevelopment of various compact dynamic structured ans\"{a}tze that are expectedto be realizable in the Noisy Intermediate-Scale Quantum (NISQ) devices.However, such ans\"{a}tze construction strategies hitherto developed involveconsiderable measurements, and thus they deviate significantly in NISQ platformfrom their ideal structures. Therefore, it is imperative that the usage ofquantum resources must be minimized while retaining the expressivity anddynamical structure of the ansatz that can adapt itself depending on the degreeof correlation. We propose a novel ansatz construction strategy based on the\textit{ab-initio} many-body perturbation theory that requires \textit{no}pre-circuit measurement and thus it remains structurally unaffected by anyhardware noise. The accuracy and quantum complexity associated with the ansatzare solely dictated by a pre-defined perturbative order as desired and henceare tunable. Furthermore, the underlying perturbative structure of the ansatzconstruction pipeline enables us to decompose any high-rank excitation thatappears in higher perturbative orders into the product of various low-rankoperators, and it thus keeps the execution gate-depth to its minimum. With anumber of challenging applications on strongly correlated systems, wedemonstrate that our ansatz performs significantly better, both in terms ofaccuracy, parameter count and circuit depth, in comparison to the alliedunitary coupled cluster based ans\"{a}tze.

Noise-independent Route towards the Genesis of a COMPACT Ansatz for Molecular Energetics: a Dynamic Approach