6 papers
Observation of Strong-to-Weak Spontaneous Symmetry Breaking in a Dephased Fermi Gas
Si Wang, Thomas G. Kiely, Dorothee Tell +9
Symmetry-based classification of quantum phases of matter is one of the most foundational organizing principles in physics; however, an analogous framework for mixed, decohered qua…
Fortuitous Universality of Bose-Kondo Impurities
Abhijat Sarma, Zheng Zhou, Ryan A. Lanzetta +1
We use the fuzzy-sphere approach to study the Bose-Kondo impurity problem, namely a spin- impurity coupled to the -dimensional Wilson-Fisher CFT (Heisenberg univer…
Inequality for Strong-Weak Spontaneous Symmetry Breaking in Fermionic Open Quantum systems
Abhijat Sarma, Cenke Xu
Under decoherence, an initial Gaussian (free-fermion) state evolves into a non-Gaussian mixed state, so the resulting decohered fermionic state is not exactly solvable in general.…
Probing Defects with Quantum Simulator Snapshots
Abhijat Sarma, Nayan Myerson-Jain, Yue Liu +4
Snapshots, i.e. projective measurements of local degrees of freedom, are the most standard data taken in experiments on quantum simulators. Snapshots are usually used to probe loca…
Effective Conformal Field Theory generated from Pure and Dephased Chern insulator
Abhijat Sarma, Yimu Bao, Nayan Myerson-Jain +2
We demonstrate that the fidelity between two states with different Chern numbers serves as a generating theory for an effective conformal fi…
Spin Liquid and Superconductivity emerging from Steady States and Measurements
Kaixiang Su, Abhijat Sarma, Marcus Bintz +4
We demonstrate that, starting with a simple fermion wave function, the steady mixed state of the evolution of a class of Lindbladians, and the ensemble created by strong local meas…