Details
| Original language | English |
|---|---|
| Pages (from-to) | 482-488 |
| Number of pages | 7 |
| Journal | Nature Physics |
| Volume | 4 |
| Issue number | 6 |
| Publication status | Published - 20 Apr 2008 |
| Externally published | Yes |
Abstract
Strongly correlated quantum systems can exhibit exotic behaviour called topological order which is characterized by non-local correlations that depend on the system topology. Such systems can exhibit remarkable phenomena such as quasiparticles with anyonic statistics and have been proposed as candidates for naturally error-free quantum computation. However, anyons have never been observed in nature directly. Here, we describe how to unambiguously detect and characterize such states in recently proposed spin-lattice realizations using ultracold atoms or molecules trapped in an optical lattice. We propose an experimentally feasible technique to access non-local degrees of freedom by carrying out global operations on trapped spins mediated by an optical cavity mode. We show how to reliably read and write topologically protected quantum memory using an atomic or photonic qubit. Furthermore, our technique can be used to probe statistics and dynamics of anyonic excitations.
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In: Nature Physics, Vol. 4, No. 6, 20.04.2008, p. 482-488.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Anyonic interferometry and protected memories in atomic spin lattices
AU - Jiang, Liang
AU - Brennen, Gavin K.
AU - Gorshkov, Alexey V.
AU - Hammerer, Klemens
AU - Hafezi, Mohammad
AU - Demler, Eugene
AU - Lukin, Mikhail D.
AU - Zoller, Peter
N1 - Funding information: We gratefully acknowledge conversations with H. P. Buchler, S. Dusuel, M. Greiner, L. Ioffe, A. Peng, A. M. Rey and J. Vidal. Work at Harvard is supported by NSF, ARO-MURI, CUA, DARPA, AFOSR and the Packard Foundation. Work at Innsbruck is supported by the Austrian Science Foundation, the EU under grants OLAQUI, SCALA, and the Institute for Quantum Information.
PY - 2008/4/20
Y1 - 2008/4/20
N2 - Strongly correlated quantum systems can exhibit exotic behaviour called topological order which is characterized by non-local correlations that depend on the system topology. Such systems can exhibit remarkable phenomena such as quasiparticles with anyonic statistics and have been proposed as candidates for naturally error-free quantum computation. However, anyons have never been observed in nature directly. Here, we describe how to unambiguously detect and characterize such states in recently proposed spin-lattice realizations using ultracold atoms or molecules trapped in an optical lattice. We propose an experimentally feasible technique to access non-local degrees of freedom by carrying out global operations on trapped spins mediated by an optical cavity mode. We show how to reliably read and write topologically protected quantum memory using an atomic or photonic qubit. Furthermore, our technique can be used to probe statistics and dynamics of anyonic excitations.
AB - Strongly correlated quantum systems can exhibit exotic behaviour called topological order which is characterized by non-local correlations that depend on the system topology. Such systems can exhibit remarkable phenomena such as quasiparticles with anyonic statistics and have been proposed as candidates for naturally error-free quantum computation. However, anyons have never been observed in nature directly. Here, we describe how to unambiguously detect and characterize such states in recently proposed spin-lattice realizations using ultracold atoms or molecules trapped in an optical lattice. We propose an experimentally feasible technique to access non-local degrees of freedom by carrying out global operations on trapped spins mediated by an optical cavity mode. We show how to reliably read and write topologically protected quantum memory using an atomic or photonic qubit. Furthermore, our technique can be used to probe statistics and dynamics of anyonic excitations.
UR - http://www.scopus.com/inward/record.url?scp=44849100166&partnerID=8YFLogxK
U2 - 10.1038/nphys943
DO - 10.1038/nphys943
M3 - Article
AN - SCOPUS:44849100166
VL - 4
SP - 482
EP - 488
JO - Nature Physics
JF - Nature Physics
SN - 1745-2473
IS - 6
ER -