Quantum camera takes pic using only entangled photons

Using a new quantum imaging technique, a picture has been captured without the camera detecting the light that was used to illuminate the subject. Instead, the detector relies on entangled photons that have never touched the subject (in this case, a silhouette of a cat).

Normally, an image of an object is obtained by sensing the light that is either reflected or transmitted through that object. However, in the new technique, detailed in Nature, the scientists used entangled pairs of photons.

In the experiment, the laser illuminates two separate crystals, creating one pair of twin photons (consisting of one infrared photon and a “sister” red photon) in either crystal. The object is placed in between the two crystals.

The arrangement is such that if a photon pair is created in the first crystal, only the infrared photon passes through the imaged object. Its path then goes through the second crystal where it fully combines with any infrared photons that would be created there.

“With this crucial step, there is now, in principle, no possibility to find out which crystal actually created the photon pair,” explained researcher Gabriela Barreto Lemos (pictured). “Moreover, there is now no information in the infrared photon about the object. However, due to the quantum correlations of the entangled pairs the information about the object is now contained in the red photons – although they never touched the object. Bringing together both paths of the red photons [from the first and the second crystal] creates bright and dark patterns, which form the exact image of the object.”

All of the infrared photons (the only light that illuminated the object) are discarded; and the picture is obtained by detecting only the red photons that never interacted with the object. Additionally, the camera used in the experiment is blind to the infrared photons that have interacted with the object.

Lemos, from the University of Vienna, is confident that her team’s new quantum imaging technique could find application where low light imaging is crucial, in fields such as biological or medical imaging.

Related:
Discuss this article in our forum
Physicists map quantum to classical collapse
Quasars at opposite ends of the Universe could close a loophole in quantum mechanics
Recent discovery of quantum vibrations in brain neurons lends weight to his controversial theory of consciousness, says Sir Roger Penrose
Entangled quarks hint at reconciliation of quantum mechanics and general relativity

Source: University of Vienna

, , ,

Comments are closed.

Schneider Electric 140DRA84000 MODICON QUANTUM  PLC Processor picture

Schneider Electric 140DRA84000 MODICON QUANTUM PLC Processor

$263.24



MODICON QUANTUM TELEMECANIQUE 140 CPS 114 20 picture

MODICON QUANTUM TELEMECANIQUE 140 CPS 114 20

$250.00



Schneider Electric 140DAO84210 Tsx Quantum Output Module picture

Schneider Electric 140DAO84210 Tsx Quantum Output Module

$187.00



Touch Screen for Frick Quantum HD Panel Johnson Controls with Protective Film picture

Touch Screen for Frick Quantum HD Panel Johnson Controls with Protective Film

$159.00



Quantum PAR Meter Full Spectrum High Precision PPFD Tester Photosynthetic Lux picture

Quantum PAR Meter Full Spectrum High Precision PPFD Tester Photosynthetic Lux

$108.90



Quantum Resonance Magnetic Analyzer picture

Quantum Resonance Magnetic Analyzer

$39.99



8 Count Quantum Storage QSB109 Blue Shelf Bins, 11-1/8

8 Count Quantum Storage QSB109 Blue Shelf Bins, 11-1/8" x 11-5/8" x 4"

$48.75



Quantum Locomotive Engine Temperature Control Q3101D picture

Quantum Locomotive Engine Temperature Control Q3101D

$269.99



1 PCS Schneider Modicon 140ARI03010 RTD IN 8CH Module TSX Quantum New In Box picture

1 PCS Schneider Modicon 140ARI03010 RTD IN 8CH Module TSX Quantum New In Box

$269.98



Schneider Electric 140ACI04000 Modicon Quantum Input Module picture

Schneider Electric 140ACI04000 Modicon Quantum Input Module

$184.80



Powered by WordPress. Designed by WooThemes