The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.
An entanglement-enhanced microscope
Open accessAbstract
Among the applications of optical phase measurement, the differential interference contrast microscope is widely used for the evaluation of opaque materials or biological tissues. However, the signal-to-noise ratio for a given light intensity is limited by the standard quantum limit, which is critical for measurements where the probe light intensity is limited to avoid damaging the sample. The standard quantum limit can only be beaten by using N quantum correlated particles, with an improvement factor of √N. Here we report the demonstration of an entanglement-enhanced microscope, which is a confocal-type differential interference contrast microscope where an entangled photon pair (N=2) source is used for illumination. An image of a Q shape carved in relief on the glass surface is obtained with better visibility than with a classical light source. The signal-to-noise ratio is 1.35±0.12 times better than that limited by the standard quantum limit. In microscopy, the standard quantum limit represents the best achievable signal-to-noise ratio for a given light intensity. Here, the authors build an optical microscope that uses entanglement between photon pairs to overcome this barrier.
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Cites
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Cited by
Single-photon sources: approaching the ideal through multiplexing
Meyer-Scott, E., Silberhorn, C., & Migdall, A. (2020) · Review of Scientific Instruments · doi:10.1063/5.0003320 · Cited by 204
Takeoka, M., Seshadreesan, K. P., You, C., Izumi, S., & Dowling, J. P. (2017) · Physical Review A · doi:10.1103/physreva.96.052118 · Cited by 72
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Metadata
- Authors
- Ono, T., Okamoto, R., & Takeuchi, S.
- Venue
- Nature Communications
- Published
- 2013-09-12
- Volume
- 4
- Issue
- 1
- Pages
- 2426-2426
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2047454221
- Cited by
- 323
- References
- 39
- FWCI
- 14.36
- Type
- journal article
- Language
- en
- Open access
- bronze
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