Entanglement, dephasing, and phase recovery via cross-correlation measurements of electrons
Determination of the path taken by a quantum particle leads to a suppression of interference and to a classical behavior. We employ here a quantum "which path" detector to perform accurate path determination in a two-path Mach-Zehnder electron interferometer, leading to full suppression of...
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| Published in | Physical review letters Vol. 98; no. 3; p. 036803 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
19.01.2007
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| Online Access | Get more information |
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| Abstract | Determination of the path taken by a quantum particle leads to a suppression of interference and to a classical behavior. We employ here a quantum "which path" detector to perform accurate path determination in a two-path Mach-Zehnder electron interferometer, leading to full suppression of the interference. Following the dephasing process we recover the interference by measuring the cross correlation between the interferometer and detector currents. Under our measurement conditions every interfering electron is dephased by approximately a single electron in the detector-leading to mutual entanglement of approximately single pairs of electrons. |
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| AbstractList | Determination of the path taken by a quantum particle leads to a suppression of interference and to a classical behavior. We employ here a quantum "which path" detector to perform accurate path determination in a two-path Mach-Zehnder electron interferometer, leading to full suppression of the interference. Following the dephasing process we recover the interference by measuring the cross correlation between the interferometer and detector currents. Under our measurement conditions every interfering electron is dephased by approximately a single electron in the detector-leading to mutual entanglement of approximately single pairs of electrons. |
| Author | Umansky, V Neder, I Mahalu, D Heiblum, M |
| Author_xml | – sequence: 1 givenname: I surname: Neder fullname: Neder, I organization: Braun Center for Submicron Research, Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel – sequence: 2 givenname: M surname: Heiblum fullname: Heiblum, M – sequence: 3 givenname: D surname: Mahalu fullname: Mahalu, D – sequence: 4 givenname: V surname: Umansky fullname: Umansky, V |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/17358710$$D View this record in MEDLINE/PubMed |
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