Postdoctoral Researcher · UCSB Physics
Jayameenakshi
Venkatraman
Hybrid solid-state spin and superconducting circuit quantum sensing — mentored by Prof. Ania C. B. Jayich. PhD in Physics at Yale on Engineering parametric gates for bosonic quantum computation — advised by Prof. Michel H. Devoret.
full cvResearch
engineering and measuring quantum systems
I engineer quantum systems by designing their Hamiltonians—and develop new ways to measure and control the resulting quantum states. At UCSB, with Prof. Ania Jayich, I am developing a hybrid quantum sensor that couples solid-state spin ensembles in diamond to superconducting microwave resonators. This platform enables quantum-limited measurement of the spins and, ultimately, programmable many-body interactions mediated by a superconducting circuit.
My PhD research at Yale, with Prof. Michel Devoret, explored how driven nonlinear quantum circuits can be engineered by controlling their effective Hamiltonians. I developed bosonic quantum codes and experimentally studied parametrically driven superconducting circuits, including the Kerr-cat qubit, whose engineered energy spectrum protects quantum information from bit-flip errors. This work also enabled high-fidelity quantum non-demolition measurement of superconducting qubits.
Selected publications
full list on the publications page
Detecting quantum noise of a solid-state spin ensemble with dispersive measurement
Phys. Rev. Res., 8:023331 (2026)
Diagrammatic method to compute the effective Hamiltonian of a driven nonlinear oscillator
Physical Review Applied, 24(4):044021 (2025)
A driven Kerr oscillator with two-fold degeneracies for qubit protection
PNAS, 121(24):e2311241121 (2024)