dorsal/arxiv
View SchemaShot noise in an electron waveguide square root of NOT gate
| Authors | Linda E. Reichl, Michael G. Snyder |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0601113 |
| URL | https://arxiv.org/abs/quant-ph/0601113 |
| DOI | 10.1103/PhysRevA.74.012318 |
Abstract
We present a calculation of the shot noise in a ballistic electron waveguide square root of NOT gate. A general expression for the shot noise in the leads connected to these types of gates is shown. We then parameterize an S-matrix which qualitatively describes the action of a square root of NOT gate previously found through numerical methods for GaAs/Al_xGa_{1-x}As based waveguides systems. Using this S-matrix, the shot noise in a single output lead and across two output leads is calculated. We find that the measurement of the shot noise across two output leads allows for the determination of the fidelity of the gate itself.
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"abstract": "We present a calculation of the shot noise in a ballistic electron waveguide\nsquare root of NOT gate. A general expression for the shot noise in the leads\nconnected to these types of gates is shown. We then parameterize an S-matrix\nwhich qualitatively describes the action of a square root of NOT gate\npreviously found through numerical methods for GaAs/Al_xGa_{1-x}As based\nwaveguides systems. Using this S-matrix, the shot noise in a single output lead\nand across two output leads is calculated. We find that the measurement of the\nshot noise across two output leads allows for the determination of the fidelity\nof the gate itself.",
"arxiv_id": "quant-ph/0601113",
"authors": [
"Linda E. Reichl",
"Michael G. Snyder"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.012318",
"title": "Shot noise in an electron waveguide square root of NOT gate",
"url": "https://arxiv.org/abs/quant-ph/0601113"
},
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