dorsal/arxiv
View SchemaAn ultra-sensitive pulsed balanced homodyne detector: Application to time-domain quantum measurements
| Authors | H. Hansen, T. Aichele, C. Hettich, P. Lodahl, A. I. Lvovsky, J. Mlynek, S. Schiller |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0104084 |
| URL | https://arxiv.org/abs/quant-ph/0104084 |
| DOI | 10.1364/OL.26.001714 |
| Journal | Optics Letters 26, 1430 (2001) |
Abstract
A pulsed balanced homodyne detector has been developed for precise measurements of electric field quadratures of pulsed optical quantum states. A high level of common mode suppression (> 85 dB) and low electronic noise (730 electrons per pulse) provide a signal to noise ratio of 14 dB for the measurement of the quantum noise of individual pulses. Measurements at repetition rates up to 1 MHz are possible. As a test, quantum tomography of the coherent state is performed and the Wigner function and the density matrix are reconstructed with a 99.5% fidelity. The detection system can also be used for ultrasensitive balanced detection in cw mode, e.g. for weak absorption measurements.
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"abstract": "A pulsed balanced homodyne detector has been developed for precise\nmeasurements of electric field quadratures of pulsed optical quantum states. A\nhigh level of common mode suppression (\u003e 85 dB) and low electronic noise (730\nelectrons per pulse) provide a signal to noise ratio of 14 dB for the\nmeasurement of the quantum noise of individual pulses. Measurements at\nrepetition rates up to 1 MHz are possible. As a test, quantum tomography of the\ncoherent state is performed and the Wigner function and the density matrix are\nreconstructed with a 99.5% fidelity. The detection system can also be used for\nultrasensitive balanced detection in cw mode, e.g. for weak absorption\nmeasurements.",
"arxiv_id": "quant-ph/0104084",
"authors": [
"H. Hansen",
"T. Aichele",
"C. Hettich",
"P. Lodahl",
"A. I. Lvovsky",
"J. Mlynek",
"S. Schiller"
],
"categories": [
"quant-ph"
],
"doi": "10.1364/OL.26.001714",
"journal_ref": "Optics Letters 26, 1430 (2001)",
"title": "An ultra-sensitive pulsed balanced homodyne detector: Application to time-domain quantum measurements",
"url": "https://arxiv.org/abs/quant-ph/0104084"
},
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