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| related topics |
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Spin wave based quantum storage of electronic spin with a ring array of
nuclear spins
Y. D. Wang, Y. Li, Z. Song, C. P. Sun
abstract: We propose a solid state based protocol to implement the universal quantum
storage for electronic spin qubit. The quantum memory in this scheme is the
spin wave excitation in the ring array of nuclei in a quantum dot. We show that
the quantum information carried by an arbitrary state of the electronic spin
can be coherently mapped onto the spin wave excitations or the magnon states.
With an appropriate external control, the stored quantum state in quantum
memory can be read out reversibly. We also explore in detail the quantum
decoherence mechanism due to the inhomogeneous couplings between the electronic
spin and the nuclear spins.
- oai_identifier:
- oai:arXiv.org:quant-ph/0409120
- categories:
- quant-ph cond-mat.mes-hall
- comments:
- 7 pages, 5 figures
- arxiv_id:
- quant-ph/0409120
- created:
- 2004-09-18
- updated:
- 2006-04-14
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