Robust Quantum State Transfer in Random Unpolarized Spin Chains
Abstract
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.Attached Files
Published - Yao2011p12681Phys_Rev_Lett.pdf
Submitted - 1011.2762v2.pdf
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Additional details
- Eprint ID
- 22631
- Resolver ID
- CaltechAUTHORS:20110303-105654399
- NSF
- Department of Energy (DOE)
- Harvard-MIT Center for Ultracold Atoms
- Defense Advanced Research Projects Agency (DARPA)
- Air Force Office of Scientific Research (AFOSR)
- National Institute of Standards and Technology (NIST)
- Lee A. DuBridge Foundation
- Sherman Fairchild Foundation
- Created
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2011-03-03Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Institute for Quantum Information and Matter