Momentum-resolved and correlation spectroscopy using quantum probes



: Cosco F, Borrelli M, Plastina F, Maniscalco S

Publisher: AMER PHYSICAL SOC

: 2017

: Physical Review A

: PHYSICAL REVIEW A

: PHYS REV A

: ARTN 053620

: 95

: 5

: 10

: 2469-9926

: 2469-9934

DOI: https://doi.org/10.1103/PhysRevA.95.053620

: https://research.utu.fi/converis/portal/detail/Publication/25302663


We address some key conditions under which many-body lattice models, intended mainly as simulated condensed-matter systems, can be investigated via immersed, fully controllable quantum objects, namely quantum probes. First, we present a protocol that, for a certain class of many-body systems, allows for full momentum-resolved spectroscopy using one single probe. Furthermore, we demonstrate how one can extract the two-point correlations using two entangled probes. We apply our theoretical proposal to two well-known exactly solvable lattice models, a one-dimensional (1D) Kitaev chain and 2D superfluid Bose-Hubbard model, and show its accuracy as well as its robustness against external noise.

Last updated on 2024-26-11 at 12:49