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  Entangling the Whole by Beam Splitting a Part

Croal, C., Peuntinger, C., Chille, V., Marquardt, C., Leuchs, G., Korolkova, N., & Mista Jr., L. (2015). Entangling the Whole by Beam Splitting a Part. PHYSICAL REVIEW LETTERS, 115(19):. doi:10.1103/PhysRevLett.115.190501.

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資料種別: 学術論文

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 作成者:
Croal, Callum1, 著者
Peuntinger, Christian2, 著者           
Chille, Vanessa2, 著者           
Marquardt, Christoph2, 著者           
Leuchs, Gerd3, 著者           
Korolkova, Natalia1, 著者
Mista Jr., Ladislav1, 著者
所属:
1external, ou_persistent22              
2Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364707              
3Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364698              

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キーワード: CONTINUOUS VARIABLE SYSTEMS; QUANTUM INFORMATION; STATES; COMMUNICATION; ENTANGLEMENT; GENERATION; CRITERIONPhysics;
 要旨: A beam splitter is a basic linear optical element appearing in many optics experiments and is frequently used as a continuous-variable entangler transforming a pair of input modes from a separable Gaussian state into an entangled state. However, a beam splitter is a passive operation that can create entanglement from Gaussian states only under certain conditions. One such condition is that the input light is suitably squeezed. We demonstrate, experimentally, that a beam splitter can create entanglement even from modes which do not possess such a squeezing provided that they are correlated to, but not entangled with, a third mode. Specifically, we show that a beam splitter can create three-mode entanglement by acting on two modes of a three-mode fully separable Gaussian state without entangling the two modes themselves. This beam splitter property is a key mechanism behind the performance of the protocol for entanglement distribution by separable states. Moreover, the property also finds application in collaborative quantum dense coding in which decoding of transmitted information is assisted by interference with a mode of the collaborating party.

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言語: eng - English
 日付: 2015
 出版の状態: オンラインで出版済み
 ページ: 5
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): ISI: 000364024800004
DOI: 10.1103/PhysRevLett.115.190501
 学位: -

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出版物名: PHYSICAL REVIEW LETTERS
種別: 学術雑誌
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出版社, 出版地: ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA : AMER PHYSICAL SOC
ページ: - 巻号: 115 (19) 通巻号: 190501 開始・終了ページ: - 識別子(ISBN, ISSN, DOIなど): ISSN: 0031-9007