| Title |
Quantum imaging with undetected photons
|
|---|---|
| Published in |
Nature, August 2014
|
| DOI | 10.1038/nature13586 |
| Pubmed ID | |
| Authors |
Gabriela Barreto Lemos, Victoria Borish, Garrett D. Cole, Sven Ramelow, Radek Lapkiewicz, Anton Zeilinger |
| Abstract |
Information is central to quantum mechanics. In particular, quantum interference occurs only if there exists no information to distinguish between the superposed states. The mere possibility of obtaining information that could distinguish between overlapping states inhibits quantum interference. Here we introduce and experimentally demonstrate a quantum imaging concept based on induced coherence without induced emission. Our experiment uses two separate down-conversion nonlinear crystals (numbered NL1 and NL2), each illuminated by the same pump laser, creating one pair of photons (denoted idler and signal). If the photon pair is created in NL1, one photon (the idler) passes through the object to be imaged and is overlapped with the idler amplitude created in NL2, its source thus being undefined. Interference of the signal amplitudes coming from the two crystals then reveals the image of the object. The photons that pass through the imaged object (idler photons from NL1) are never detected, while we obtain images exclusively with the signal photons (from NL1 and NL2), which do not interact with the object. Our experiment is fundamentally different from previous quantum imaging techniques, such as interaction-free imaging or ghost imaging, because now the photons used to illuminate the object do not have to be detected at all and no coincidence detection is necessary. This enables the probe wavelength to be chosen in a range for which suitable detectors are not available. To illustrate this, we show images of objects that are either opaque or invisible to the detected photons. Our experiment is a prototype in quantum information--knowledge can be extracted by, and about, a photon that is never detected. |
X Demographics
The data shown below were collected from the profiles of 103 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 15 | 15% |
| United Kingdom | 5 | 5% |
| Brazil | 4 | 4% |
| Japan | 4 | 4% |
| Spain | 3 | 3% |
| Germany | 3 | 3% |
| Poland | 2 | 2% |
| Austria | 2 | 2% |
| India | 1 | <1% |
| Other | 17 | 17% |
| Unknown | 47 | 46% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 77 | 75% |
| Scientists | 21 | 20% |
| Science communicators (journalists, bloggers, editors) | 3 | 3% |
| Practitioners (doctors, other healthcare professionals) | 2 | 2% |
Mendeley readers
The data shown below were compiled from readership statistics for 841 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 20 | 2% |
| Germany | 15 | 2% |
| United Kingdom | 10 | 1% |
| Brazil | 7 | <1% |
| Russia | 5 | <1% |
| Japan | 3 | <1% |
| Switzerland | 2 | <1% |
| China | 2 | <1% |
| Czechia | 2 | <1% |
| Other | 8 | <1% |
| Unknown | 767 | 91% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 230 | 27% |
| Researcher | 165 | 20% |
| Student > Master | 96 | 11% |
| Professor > Associate Professor | 55 | 7% |
| Student > Doctoral Student | 40 | 5% |
| Other | 125 | 15% |
| Unknown | 130 | 15% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 482 | 57% |
| Engineering | 85 | 10% |
| Chemistry | 39 | 5% |
| Agricultural and Biological Sciences | 25 | 3% |
| Materials Science | 18 | 2% |
| Other | 45 | 5% |
| Unknown | 147 | 17% |
Attention Score in Context
This research output has an Altmetric Attention Score of 534. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 14 September 2023.
All research outputs
#47,581
of 25,870,142 outputs
Outputs from Nature
#3,967
of 98,981 outputs
Outputs of similar age
#306
of 248,363 outputs
Outputs of similar age from Nature
#37
of 974 outputs
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