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RESILIENCE OF SINGLET-STATE EXTRACTION AGAINST NON-OPTIMAL RESONANCE CONDITIONS

CNISM and Dipartimento di Fisica e Tecnologie Relative, Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, I-90128 Palermo, Italy

School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, United Kingdom

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M. PATERNOSTRO

School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, United Kingdom

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M. S. KIM

School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, United Kingdom

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G. M. PALMA

NEST-INFM (CNR) & Dipartimento di Scienze Fisiche ed Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, I-90123 Palermo, Italy

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https://doi.org/10.1142/S0219749908004079Cited by:7 (Source: Crossref)

Abstract

We have recently presented a protocol for extracting the singlet state of two non-interacting high-dimensional spins through post-selection of the internal state of interaction mediators sent in succession [F. Ciccarello et al., arXiv:0710.3855v1]. The scheme requires each mediator's wavevector to obey appropriate resonance conditions. Here we show the robustness of the scheme in the realistic case where such conditions are not sharply fulfilled.

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References

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