dorsal/arxiv
View SchemaAn Electronic Mach-Zehnder Quantum Eraser
| Authors | Kicheon Kang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0607031 |
| URL | https://arxiv.org/abs/quant-ph/0607031 |
| DOI | 10.1103/PhysRevB.75.125326 |
Abstract
We propose an electronic quantum eraser in which the electrons are injected into a mesoscopic conductor at the quantum Hall regime. The conductor is composed of a two-path interferometer which is an electronic analogue of the optical Mach-Zehnder interferometer, and a quantum point contact detector capacitively coupled to the interferometer. While the interference of the output current at the interferometer is shown to be suppressed by the which-path information, we show that the which-path information is erased by the zero-frequency cross correlation measurement between the interferometer and the detector output leads. We also investigate a modified setup in which the detector is replaced by a two-path interferometer.We show that the path distinguishability and the visibility of the joint detection can be controlled in a continuous manner, and satisfy a complementarity relation for the entangled electrons.
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"abstract": "We propose an electronic quantum eraser in which the electrons are injected\ninto a mesoscopic conductor at the quantum Hall regime. The conductor is\ncomposed of a two-path interferometer which is an electronic analogue of the\noptical Mach-Zehnder interferometer, and a quantum point contact detector\ncapacitively coupled to the interferometer. While the interference of the\noutput current at the interferometer is shown to be suppressed by the\nwhich-path information, we show that the which-path information is erased by\nthe zero-frequency cross correlation measurement between the interferometer and\nthe detector output leads. We also investigate a modified setup in which the\ndetector is replaced by a two-path interferometer.We show that the path\ndistinguishability and the visibility of the joint detection can be controlled\nin a continuous manner, and satisfy a complementarity relation for the\nentangled electrons.",
"arxiv_id": "quant-ph/0607031",
"authors": [
"Kicheon Kang"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"doi": "10.1103/PhysRevB.75.125326",
"title": "An Electronic Mach-Zehnder Quantum Eraser",
"url": "https://arxiv.org/abs/quant-ph/0607031"
},
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