Probing many-body states of ultracold atoms via noise correlations (4 pages)
By E. Altman, E. Demler, Mikhail D. Lukin. 2003
326 citations recorded by the source corpus.
We propose to utilize density-density correlations in the image of an expanding gas cloud to probe complex many-body states of trapped ultracold atoms. In particular, we show how this technique can be used to detect superfluidity of fermionic gases and to study spin correlations of multicomponent atoms in optical lattices. The feasibility of the method is investigated by analysis of the relevant signal to noise ratio including experimental imperfections.
Subfields: Atomic and Molecular Physics, and Optics, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/8ef33f6ecdff078474178c2b21d40c6fd3288137
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Atomic and Molecular Physics, and Optics
In Spectroscopy
Citations in the corpus
- Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques (2008, methodology): “ous to the photon correlations observed in the landmark experiments of Hanbury-Brown and Twiss [91]. Such correlations are of particular interest in systems where many-body interactions are important [4,208], and in the region of the phase transition, where critical exponents can be measured [59]. T”
- Rapidly rotating atomic gases (2008, methodology): “f the expanded wavefunction be used to directly measure the density-density correlation functions of the states in the trap[228]. This method – also referred to as measurements of “noise correlations”[230] – is particularly powerful in the present case, where the scaling of the wavefunction allows d”
- Fermi gases in one dimension: From Bethe ansatz to experiments (2013, methodology): “This technique is known as noise spectroscopy (Altman et al., 2004; Chuu et al., 2005; Fölling et al., 2005; Greiner et al., 2005a).”
- Rotating trapped Bose-Einstein condensates (2008, background): “Another possibility would be to study the ensemble averaged density-density noise correlations (Altman et al., 2004; Brown and Twiss, 1956), which should exhibit a different structure in the correlated state from that in the mean-field LLL regime.”
- One dimensional bosons: From condensed matter systems to ultracold gases (2011, methodology): “Altman et al. (2004a) thus proposed to use time of flight spectroscopy to measure correlations between occupation numbers for different momenta: Gk,k′ = 〈n̂kn̂k′〉 − 〈n̂k〉〈n̂k′〉 (168) 54 where n̂k is the occupation number for momentum k, and the average is taken over the initial state.”
- Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms (2009, background): “AsN increases, the magnetic or singlet nature of the state can be probed by measuring the Neel order parameter (see the description of the Kugel-Khomskii double-well experiment in the Methods) and spin-spin correlations via noi se spectroscopy in the time of flight [40] (which directly measures ∑ i,”
- A Rydberg quantum simulator (2009, background): “In analogy to noise correlation measurements in cold atomic gase”
- The BCS–BEC crossover: From ultra-cold Fermi gases to nuclear systems (2018, unknown): “[264]; (ix) The observation of vortices throughout the whole crossover [265]; (x) The detection of phase separation [108, 109, 266] and the measurement of the critical temperature [267, 137] and polarization [267, 268, 269] in imbalanced Fermi gases; (xi) The measurement of first- [270] and second-s”