Ananda Roy, Rutgers University

Abstract

Quantum computers can efficiently solve problems which are widely believed to lie beyond the reach of classical computers. In the near-term, hybrid quantum-classical algorithms, which efficiently embed quantum hardware in classical frameworks, are crucial in bridging the vast divide in the performance of the purely-quantum algorithms and their classical counterparts. Here, a hybrid quantum-classical algorithm is presented for the computation of non-perturbative characteristics of quantum field theories. The presented algorithm relies on a universal parametrized quantum circuit ansatz based on Euler and Cartan's decompositions of single and two-qubit operators. It is benchmarked by computing the energy spectra of lattice realizations of quantum field theories with both short and long range interactions. Low depth circuits are provided for false vacua as well as highly excited states corresponding to mesonic and baryonic excitations occurring in the analyzed models.

Speaker Bio:

• August 2024 – present: Research Staff (part-time), Condensed Matter and Materials Science Division, Brookhaven National Laboratory, USA
• September 2021 – present: Assistant Professor, Rutgers University, USA
• December 2018 – August 2021: Postdoctoral researcher, Technical University Munich, Germany
• June 2018 – November 2018: Visiting researcher, CEA Saclay, France
• September 2016 – May 2018: Postdoctoral researcher, RWTH Aachen University, Germany
• September 2010 – August 2016: PhD student, Yale University