The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Quantum metrology with parametric amplifier-based photon correlation interferometers
Open accessAbstract
Conventional interferometers usually utilize beam splitters for wave splitting and recombination. These interferometers are widely used for precision measurement. Their sensitivity for phase measurement is limited by the shot noise, which can be suppressed with squeezed states of light. Here we study a new type of interferometer in which the beam splitting and recombination elements are parametric amplifiers. We observe an improvement of 4.1±0.3 dB in signal-to-noise ratio compared with a conventional interferometer under the same operating condition, which is a 1.6-fold enhancement in rms phase measurement sensitivity beyond the shot noise limit. The improvement is due to signal enhancement. Combined with the squeezed state technique for shot noise suppression, this interferometer promises further improvement in sensitivity. Furthermore, because nonlinear processes are involved in this interferometer, we can couple a variety of different waves and form new types of hybrid interferometers, opening a door for many applications in metrology. Interferometers play a key role in precision measurements and metrology. Here, the authors demonstrate a new type of interferometer that replaces the standard beam splitter elements with parametric amplifiers, which provides enhanced performance compared with a Mach–Zehnder interferometer.
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Infrared spectroscopy with visible light
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Self-citation
Metadata
- Authors
- Hudelist, F., Kong, J., Liu, C., Jing, J., Ou, Z. Y., & Zhang, W.
- Venue
- Nature Communications
- Published
- 2014-01-29
- Volume
- 5
- Issue
- 1
- Pages
- 3049-3049
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2010027512
- Cited by
- 437
- References
- 34
- FWCI
- 32.35
- Type
- journal article
- Language
- en
- Open access
- hybrid
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