Shot-Noise Limited Homodyne Detection for MHz Quantum Light Characterisation in the 2 {\mu}m Band
| Autor: | Biele, Jake, Tasker, Joel F., Silverstone, Joshua W., Matthews, Jonathan C. F. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OE.450217 |
| Popis: | Characterising quantum states of light in the 2 ${\mu}m$ band requires high-performance shot-noise limited detectors. Here, we present the characterisation of a homodyne detector that we use to observe vacuum shot-noise via homodyne measurement with a 2.07 ${\mu}m$ pulsed mode-locked laser. The device is designed primarily for pulsed illumination. It has a 3 dB bandwidth of 13.2 MHz, total conversion efficiency of 58% at 2.07 ${\mu}m$ and a common-mode rejection ratio of 48 dB at 39.5 MHz. The detector begins to saturate at 1.8 mW with 9 dB of shot-noise clearance at 5 MHz. This demonstration enables the characterisation of megahertz-quantum optical behaviour in the 2 ${\mu}m$ band. Comment: 7 pages, 2 figures and 1 table |
| Databáze: | arXiv |
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