dorsal/arxiv
View SchemaDemonstration of negative group delays in a simple electronic circuit
| Authors | T. Nakanishi, K. Sugiyama, M. Kitano |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0201001 |
| URL | https://arxiv.org/abs/quant-ph/0201001 |
| DOI | 10.1119/1.1503378 |
| Journal | American Journal of Physics, Volume 70, Issue 11, pp. 1117-1121 (2002) |
Abstract
We present a simple electronic circuit which produces negative group delays for base-band pulses. When a band-limited pulse is applied as the input, a forwarded pulse appears at the output. The negative group delays in lumped systems share the same mechanism with the superluminal light propagation, which is recently demonstrated in an absorption-free, anomalous dispersive medium [Wang et al., Nature 406, 277 (2000)]. In this circuit, the advance time more than twenty percent of the pulse width can easily be achieved. The time constants, which can be in the order of seconds, is slow enough to be observed with the naked eye by looking at the lamps driven by the pulses.
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"abstract": "We present a simple electronic circuit which produces negative group delays\nfor base-band pulses. When a band-limited pulse is applied as the input, a\nforwarded pulse appears at the output. The negative group delays in lumped\nsystems share the same mechanism with the superluminal light propagation, which\nis recently demonstrated in an absorption-free, anomalous dispersive medium\n[Wang et al., Nature 406, 277 (2000)]. In this circuit, the advance time more\nthan twenty percent of the pulse width can easily be achieved. The time\nconstants, which can be in the order of seconds, is slow enough to be observed\nwith the naked eye by looking at the lamps driven by the pulses.",
"arxiv_id": "quant-ph/0201001",
"authors": [
"T. Nakanishi",
"K. Sugiyama",
"M. Kitano"
],
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"quant-ph"
],
"doi": "10.1119/1.1503378",
"journal_ref": "American Journal of Physics, Volume 70, Issue 11, pp. 1117-1121\n (2002)",
"title": "Demonstration of negative group delays in a simple electronic circuit",
"url": "https://arxiv.org/abs/quant-ph/0201001"
},
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