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Quantum probe spectroscopy for cold atomic systems
- Source :
- New J. Phys. 20, 103006 (2018)
- Publication Year :
- 2018
-
Abstract
- We study a two-level impurity coupled locally to a quantum gas on an optical lattice. For state-dependent interactions between the impurity and the gas, we show that its evolution encodes information on the local excitation spectrum of gas at the coupling site. Based on this, we design a nondestructive method to probe the system's excitations in a broad range of energies by measuring the state of the probe using standard atom optics methods. We illustrate our findings with numerical simulations for quantum lattice systems, including realistic dephasing noise on the quantum probe, and discuss practical limits on the probe dephasing rate to fully resolve both regular and chaotic spectra.<br />Comment: 17 single-column pages, 4 figures. Matches published version
- Subjects :
- Condensed Matter - Quantum Gases
Physics - Atomic Physics
Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- New J. Phys. 20, 103006 (2018)
- Publication Type :
- Report
- Accession number :
- edsarx.1804.09237
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1367-2630/aae418