Yao, N. Y. and Jiang, L. and Gorshkov, A. V. and Gong, Z.-X. and Zhai, A. and Duan, L.-M. and Lukin, M. D. (2011) Robust Quantum State Transfer in Random Unpolarized Spin Chains. Physical Review Letters, 106 (4). Art. No. 040505. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:20110303-105654399
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We propose and analyze a new approach for quantum state transfer between remote spin qubits. Specifically, we demonstrate that coherent quantum coupling between remote qubits can be achieved via certain classes of random, unpolarized (infinite temperature) spin chains. Our method is robust to coupling-strength disorder and does not require manipulation or control over individual spins. In principle, it can be used to attain perfect state transfer over an arbitrarily long range via purely Hamiltonian evolution and may be particularly applicable in a solid-state quantum information processor. As an example, we demonstrate that it can be used to attain strong coherent coupling between nitrogen-vacancy centers separated by micrometer distances at room temperature. Realistic imperfections and decoherence effects are analyzed.
|Additional Information:||© 2011 American Physical Society. Received 14 November 2010; published 27 January 2011. We gratefully acknowledge conversations with G. Giedke, J.I. Cirac, G. Goldstein, T. Kitagawa, J. Maze, P. Maurer, E. Togan, Y. Chu, J. Otterbach, C. Laumann, C. Mathy, A. Sørensen, J. Preskill, N. Schuch, S. F. Lichtenstein, and Y. T. Siu. This work was supported by the NSF, DOE, CUA, DARPA, AFOSR MURI, NIST, Lee A. DuBridge Foundation, and the Sherman Fairchild Foundation.|
|Classification Code:||PACS: 03.67.Lx, 03.65.Yz, 03.67.Hk, 75.10.Pq|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Benjamin Perez|
|Deposited On:||03 Mar 2011 19:46|
|Last Modified:||26 Dec 2012 12:59|
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