US 7,321,429 B2
Microscope using quantum-mechanically entangled photons
Kouichi Ichimura, Yokohama (Japan); Kenji Ohkuma, Yokohama (Japan); Mikio Fujii, Kawasaki (Japan); Hayato Goto, Kawasaki (Japan); and Kentaro Torii, Tokyo (Japan)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan)
Filed on Feb. 10, 2005, as Appl. No. 11/54,441.
Claims priority of application No. 2004-035401 (JP), filed on Feb. 12, 2004.
Prior Publication US 2005/0213107 A1, Sep. 29, 2005
Int. Cl. G01B 9/02 (2006.01)
U.S. Cl. 356—484  [356/317] 17 Claims
OG exemplary drawing
 
1. A microscope using quantum-mechanically entangled photons comprising:
a photon source which sequentially generates sets of quantum-mechanically entangled photons including at least two photons;
a splitter splitting the quantum-mechanically entangled photons into individual photons traveling in different directions;
lenses which focus the individual photons, respectively;
actuators which vary relative distances between focal positions of the respective lenses on which the individual photons are focused and specimens having a same structure with a displacement, respectively, the specimens being arranged near the focal positions of the respective lenses;
detectors detecting a photon transmitted through or scattered by the specimens, respectively; and
a counter counting coincidence detections of the photons with the detectors depending on the varied relative distances.