Quantum imaging with undetected photons

In summary, a team of researchers has been able to take an image without ever detecting light using quantum imaging. They were able to do this by exploiting the statistics of the red and infrared photons that share a wavefunction.
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  • #2
Quantum imaging with undetected photons
... um no.
You cannot make an image from something that is not detected - that is not what "image" means.

What is claimed is: "the image has been obtained without ever detecting the light that was used to illuminate the imaged object"... so the image is not made out of undetected photons. It is constructed from the light that has not illuminated the object.

Note: every time you look at your shadow, you are getting an image from light that has not illuminated you. This is somewhat different though.

Normally by the entangled it is not possible to transfer information
... also not correct. You just cannot use entanglement to transfer information faster than the speed of light. The experiment does not do this.

It basically does a clever trick with the statistics - it exploits the way the red and infrared photons basically share a wavefunction.
 
  • #3
Simon Bridge said:
It basically does a clever trick with the statistics - it exploits the way the red and infrared photons basically share a wavefunction.
Thank

I just found the article on arxiv : http://arxiv.org/pdf/1401.4318v2.pdf

Patrick
 
  • #4
Wow, that't the first time I've seen a very good paper written with Word. However it's utmost ugly, as expected. If you can, take the published version from Nature. I'm still always impressed that nowadays the quantum opticians can really do all that "gedanken experiments" which worried Einstein so much :-)). The Nature article appeared this Thursday:

Gabriela Barreto Lemos, Victoria Borish, Garrett D. Cole, Sven Ramelow, Radek Lapkiewic & Anton Zeilinger, Nature 512, 409–412 (2014)
http://dx.doi.org/doi:10.1038/nature13586[/URL]

There's also a Nature News article on this paper:

[url]http://www.nature.com/news/entangled-photons-make-a-picture-from-a-paradox-1.15781[/url]
 
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Related to Quantum imaging with undetected photons

1. What is quantum imaging with undetected photons?

Quantum imaging with undetected photons is a technique used in quantum optics that involves the detection of images using photons that are not directly detected by a traditional detector. This technique relies on the principles of quantum mechanics to create an image without directly detecting the photons that make up the image.

2. How does quantum imaging with undetected photons differ from traditional imaging methods?

Unlike traditional imaging methods, which rely on detecting and measuring individual photons, quantum imaging with undetected photons uses the concept of entanglement to create an image. This means that the photons used in the image are not directly detected, but their entangled state is used to create an image.

3. What are the potential applications of quantum imaging with undetected photons?

Quantum imaging with undetected photons has potential applications in fields such as microscopy, medical imaging, and security. It could also be used to improve the resolution and sensitivity of imaging techniques, as well as provide a way to image objects that are difficult to detect with traditional imaging methods.

4. What are the challenges of implementing quantum imaging with undetected photons?

One of the main challenges of implementing quantum imaging with undetected photons is the need for highly sensitive and precise equipment. This includes specialized detectors and sources of entangled photons. Additionally, the process of creating entangled photons can be complex and requires careful control to produce high-quality images.

5. How is quantum imaging with undetected photons relevant to quantum computing?

Quantum imaging with undetected photons is relevant to quantum computing because it relies on the principles of quantum mechanics, which are also the basis of quantum computing. This technique can provide insights into the behavior of quantum systems and could potentially be used in the development of quantum computing technologies.

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