Effect of cold collisions on spin coherence and resonance shifts in a magnetically trapped ultracold gas

By Dave Harber, Heather Lewandowski, J. M. Mcguirk, E. A. Cornell. 2002

177 citations recorded by the source corpus.

We have performed precision microwave spectroscopy on ultracold ${}^{87}\mathrm{Rb}$ confined in a magnetic trap, both above and below the Bose-condensation transition. The cold collision frequency shifts for both normal and condensed clouds were measured, which allowed the intrastate and interstate density correlations (characterized by sometimes controversial ``factors of 2'') to be determined. Additionally, temporal coherence of the normal cloud was studied, and the importance of mean-field and velocity-changing collisions in preserving coherence is discussed.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/29ee5bbc7265290ae3c0963397762bc3c62f5797

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Colloquium: Physics of optical lattice clocks (2010, background): “This may be potentially accomplished either with multi-step RF or MW or stimulated Raman drives (Alexandrov and Pazgalev, 1997; Harber et al., 2002).”
Memory-built-in quantum teleportation with photonic and atomic qubits (2007, background): “To do so, we can confine the atoms in an optical trap and exploiting a clock state to store the collective spin excitatio”
Physics with coherent matter waves (2004, methodology): “In recent experiments this system was used for various studies on spin transport, coherence and decoherence phenomena, in particular with respect to interactions with the normal component [224, 225, 226, 227].”
Spinor Bose gases: Symmetries, magnetism, and quantum dynamics (2013, background): “The magnetic-field insensitivity of the internal energy difference between these states allows the coherence between them to be probed over seconds-long evolution times (Deutsch et al., 2010; Harber et al., 2002; Treutlein et al., 2004).”
A millisecond quantum memory for scalable quantum networks (2008, background): “Thereby, storing the collective state in the superposition of the first-order magnetic-field-insensitive state[21], i.”
Long-lived quantum memory (2009, background): “The ground states of atoms and ions are potential candidates for quantum memories, but although coherence times of the order of a few seconds for atom”