Vibrational mode multiplexing of ultracold atoms

S. Martínez-Garaot, E. Torrontegui, Xi Chen, M. Modugno, D. Guéry-Odelin, Shuo Yen Tseng, J. G. Muga

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Sending multiple messages on qubits encoded in different vibrational modes of cold atoms or ions along a transmission waveguide requires us to merge first and then separate the modes at input and output ends. Similarly, different qubits can be stored in the modes of a trap and be separated later. We design the fast splitting of a harmonic trap into an asymmetric double well so that the initial ground vibrational state becomes the ground state of one of two final wells, and the initial first excited state becomes the ground state of the other well. This might be done adiabatically by slowly deforming the trap. We speed up the process by inverse engineering a double-function trap using dynamical invariants. The separation (demultiplexing) followed by an inversion of the asymmetric bias and then by the reverse process (multiplexing) provides a population inversion protocol based solely on trap reshaping.

Original languageEnglish
Article number213001
JournalPhysical review letters
Volume111
Issue number21
DOIs
Publication statusPublished - 2013 Nov 20

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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