Probing Matter-Field and Atom-Number Correlations in Optical Lattices by Global Nondestructive Addressing
arXiv:1411.7567 · doi:10.1103/PhysRevA.92.013613
Abstract
We show that light scattering from an ultracold gas reveals not only density correlations, but also matter-field interference at its shortest possible distance in an optical lattice, which defines key properties such as tunneling and matter-field phase gradients. This signal can be enhanced by concentrating probe light between lattice sites rather than at density maxima. As addressing between two single sites is challenging, we focus on global nondestructive scattering, allowing probing order parameters, matter-field quadratures and their squeezing. The scattering angular distribution displays peaks even if classical diffraction is forbidden and we derive generalized Bragg conditions. Light scattering distinguishes all phases in the Mott insulator - superfluid - Bose glass phase transition.
8 pages, 6 figures; To be published in Phys. Rev. A (2015)
References in corpus (23)
- Many-Body Physics with Ultracold Gases
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Cold atoms in cavity-generated dynamical optical potentials
- Single-Spin Addressing in an Atomic Mott Insulator
- The quasi-periodic Bose-Hubbard model and localization in one-dimensional cold atomic gases
- Ultracold atoms in optical lattices generated by quantized light fields
- Quantum Non-Demolition Detection of Strongly Correlated Systems
- Mott insulator states of ultracold atoms in optical resonators
- Bose-glass phases of ultracold atoms due to cavity backaction
- Cavity enhanced light scattering in optical lattices to probe atomic quantum statistics
- Quantum Correlation Without Classical Correlations
- REVIEW. Quantum optics with ultracold quantum gases: towards the full quantum regime of the light-matter interaction
- Multipartite Entangled Spatial Modes of Ultracold Atoms Generated and Controlled by Quantum Measurement
- QND measurements and state preparation in quantum gases by light detection
- Coherent light scattering from a two-dimensional Mott insulator
- Light scattering from ultracold atoms in optical lattices as an optical probe of quantum statistics
- Microscopic physics of quantum self-organisation of optical lattices in cavities
- Light scattering for thermometry of fermionic atoms in an optical lattice
- Many-body state engineering using measurements and fixed unitary dynamics
- Quantum optics with quantum gases: controlled state reduction by designed light scattering
- Characterization of Bose-Hubbard Models with Quantum Non-demolition Measurements
- Quantum Optics with Quantum Gases
- Thermal effects in light scattering from ultracold bosons in an optical lattice