dorsal/arxiv
View SchemaDynamical creation of entanglement by homodyne-mediated feedback
| Authors | Jin Wang, H. M. Wiseman, G. J. Milburn |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409154 |
| URL | https://arxiv.org/abs/quant-ph/0409154 |
| DOI | 10.1103/PhysRevA.71.042309 |
| Journal | Published in Phys. Rev. A 71, 042309, (2005) |
Abstract
For two two-level atoms coupled to a single-mode cavity field that is driven and heavily damped, the steady-state can be entangled by shining an un-modulated driving laser on the system [S.Schneider, G. J. Milburn Phys. Rev A 65, 042107, 2002]. We present a scheme to significantly increase the steady-state entanglement by using homodyne-mediated feedback, in which the driving laser is modulated by the homodyne photocurrent derived from the cavity output. Such feedback can increase the nonlinear response to both the decoherence process of the two-qubit system and the coherent evolution of individual qubits. We present the properties of the entangled states using the SO(3) Q function.
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"abstract": "For two two-level atoms coupled to a single-mode cavity field that is driven\nand heavily damped, the steady-state can be entangled by shining an\nun-modulated driving laser on the system [S.Schneider, G. J. Milburn Phys. Rev\nA 65, 042107, 2002]. We present a scheme to significantly increase the\nsteady-state entanglement by using homodyne-mediated feedback, in which the\ndriving laser is modulated by the homodyne photocurrent derived from the cavity\noutput. Such feedback can increase the nonlinear response to both the\ndecoherence process of the two-qubit system and the coherent evolution of\nindividual qubits. We present the properties of the entangled states using the\nSO(3) Q function.",
"arxiv_id": "quant-ph/0409154",
"authors": [
"Jin Wang",
"H. M. Wiseman",
"G. J. Milburn"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.042309",
"journal_ref": "Published in Phys. Rev. A 71, 042309, (2005)",
"title": "Dynamical creation of entanglement by homodyne-mediated feedback",
"url": "https://arxiv.org/abs/quant-ph/0409154"
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