Dissipative preparation of entanglement in optical cavities

Michael James Kastoryano; Florentin Reiter; Anders Søndberg Sørensen

doi:10.1103/PhysRevLett.106.090502

Dissipative preparation of entanglement in optical cavities

Michael James Kastoryano, Florentin Reiter, Anders Søndberg Sørensen

246 Citationer (Scopus)

Abstract

We propose a novel scheme for the preparation of a maximally entangled state of two atoms in an optical cavity. Starting from an arbitrary initial state, a singlet state is prepared as the unique fixed point of a dissipative quantum dynamical process. In our scheme, cavity decay is no longer undesirable, but plays an integral part in the dynamics. As a result, we get a qualitative improvement in the scaling of the fidelity with the cavity parameters. Our analysis indicates that dissipative state preparation is more than just a new conceptual approach, but can allow for significant improvement as compared to preparation protocols based on coherent unitary dynamics

Originalsprog	Engelsk
Tidsskrift	Physical Review Letters
Vol/bind	106
Udgave nummer	9
Sider (fra-til)	090502
Antal sider	4
ISSN	0031-9007
DOI	https://doi.org/10.1103/PhysRevLett.106.090502
Status	Udgivet - 28 feb. 2011

Adgang til dokumentet

10.1103/PhysRevLett.106.090502

Citationsformater

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abstract = "We propose a novel scheme for the preparation of a maximally entangled state of two atoms in an optical cavity. Starting from an arbitrary initial state, a singlet state is prepared as the unique fixed point of a dissipative quantum dynamical process. In our scheme, cavity decay is no longer undesirable, but plays an integral part in the dynamics. As a result, we get a qualitative improvement in the scaling of the fidelity with the cavity parameters. Our analysis indicates that dissipative state preparation is more than just a new conceptual approach, but can allow for significant improvement as compared to preparation protocols based on coherent unitary dynamics",

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AU - Sørensen, Anders Søndberg

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AB - We propose a novel scheme for the preparation of a maximally entangled state of two atoms in an optical cavity. Starting from an arbitrary initial state, a singlet state is prepared as the unique fixed point of a dissipative quantum dynamical process. In our scheme, cavity decay is no longer undesirable, but plays an integral part in the dynamics. As a result, we get a qualitative improvement in the scaling of the fidelity with the cavity parameters. Our analysis indicates that dissipative state preparation is more than just a new conceptual approach, but can allow for significant improvement as compared to preparation protocols based on coherent unitary dynamics

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DO - 10.1103/PhysRevLett.106.090502

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