Entanglement generated by dissipation and steady state entanglement of two macroscopic objects

Hanna Krauter; C.A. Muschik; Kasper Jensen; Wojciech Wasilewski; Jonas Meyer Petersen; J.I Cirac; Eugene Simon Polzik

doi:10.1103/PhysRevLett.107.080503

Entanglement generated by dissipation and steady state entanglement of two macroscopic objects

Hanna Krauter, C.A. Muschik, Kasper Jensen, Wojciech Wasilewski, Jonas Meyer Petersen, J.I Cirac, Eugene Simon Polzik

371 Citations (Scopus)

Abstract

Entanglement is a striking feature of quantum mechanics and an essential ingredient in most applications in quantum information. Typically, coupling of a system to an environment inhibits entanglement, particularly in macroscopic systems. Here we report on an experiment where dissipation continuously generates entanglement between two macroscopic objects. This is achieved by engineering the dissipation using laser and magnetic fields, and leads to robust event-ready entanglement maintained for 0.04 s at room temperature. Our system consists of two ensembles containing about 1012 atoms and separated by 0.5 m coupled to the environment composed of the vacuum modes of the electromagnetic field. By combining the dissipative mechanism with a continuous measurement, steady state entanglement is continuously generated and observed for up to 1 h.

Original language	English
Journal	Physical Review Letters
Volume	107
Issue number	8
Pages (from-to)	080503
Number of pages	5
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.107.080503
Publication status	Published - 17 Aug 2011

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abstract = "Entanglement is a striking feature of quantum mechanics and an essential ingredient in most applications in quantum information. Typically, coupling of a system to an environment inhibits entanglement, particularly in macroscopic systems. Here we report on an experiment where dissipation continuously generates entanglement between two macroscopic objects. This is achieved by engineering the dissipation using laser and magnetic fields, and leads to robust event-ready entanglement maintained for 0.04 s at room temperature. Our system consists of two ensembles containing about 1012 atoms and separated by 0.5 m coupled to the environment composed of the vacuum modes of the electromagnetic field. By combining the dissipative mechanism with a continuous measurement, steady state entanglement is continuously generated and observed for up to 1 h.",

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AU - Krauter, Hanna

AU - Muschik, C.A.

AU - Jensen, Kasper

AU - Wasilewski, Wojciech

AU - Petersen, Jonas Meyer

AU - Cirac, J.I

AU - Polzik, Eugene Simon

PY - 2011/8/17

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AB - Entanglement is a striking feature of quantum mechanics and an essential ingredient in most applications in quantum information. Typically, coupling of a system to an environment inhibits entanglement, particularly in macroscopic systems. Here we report on an experiment where dissipation continuously generates entanglement between two macroscopic objects. This is achieved by engineering the dissipation using laser and magnetic fields, and leads to robust event-ready entanglement maintained for 0.04 s at room temperature. Our system consists of two ensembles containing about 1012 atoms and separated by 0.5 m coupled to the environment composed of the vacuum modes of the electromagnetic field. By combining the dissipative mechanism with a continuous measurement, steady state entanglement is continuously generated and observed for up to 1 h.

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Entanglement generated by dissipation and steady state entanglement of two macroscopic objects

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