A limitation of free-space optical communications is the ease with which the information can be intercepted. This limitation can be overcome by hiding the information within background optical noise. We demonstrate the transfer of images over free-space using a photon-pair source emitting two correlated beams. One of these beams contains image information, to which noise is added, and the other correlated beam is used as a heralding trigger so that the intended recipient can differentiate this image signal from the background noise. The system uses spontaneous parametric down-conversion to create photon-pairs with a wide spectral bandwidth and a gated intensified camera to extract the image from the background noise. The high-dimensionality...
One of the challenging real-world problems in the communication network is to secure the communicati...
We propose and experimentally demonstrate an optical steganography method in which a data signal is ...
To evidence multimode spatial entanglement of spontaneous down-conversion, detector arrays allow a f...
Traditional remote sensing applications are often based on pulsed laser illumination with a narrow l...
Classical light sources emit a randomly-timed stream of individual photons, the spatial distribution...
Quantum illumination protocols can be implemented to improve imaging performance in the low photon f...
Low-light-level imaging techniques have application in many diverse fields, ranging from biological ...
We describe a protocol by which an imaging system could be protected against jamming by a malevolent...
How can quantum mechanics deliver better imaging performance? Parametric down-conversion sources pro...
Correlated photon pairs produced by a spontaneous parametric down conversion (SPDC) process can be u...
We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment ...
Communicating information at the few photon level typically requires some complexity in the transmit...
Imaging based on the induced coherence effect makes use of photon pairs to obtain information of an ...
Conventional imaging systems rely upon illumination light that is scattered or transmitted by the ob...
Ghost imaging can be performed using either quantum or classical states of light that possess strong...
One of the challenging real-world problems in the communication network is to secure the communicati...
We propose and experimentally demonstrate an optical steganography method in which a data signal is ...
To evidence multimode spatial entanglement of spontaneous down-conversion, detector arrays allow a f...
Traditional remote sensing applications are often based on pulsed laser illumination with a narrow l...
Classical light sources emit a randomly-timed stream of individual photons, the spatial distribution...
Quantum illumination protocols can be implemented to improve imaging performance in the low photon f...
Low-light-level imaging techniques have application in many diverse fields, ranging from biological ...
We describe a protocol by which an imaging system could be protected against jamming by a malevolent...
How can quantum mechanics deliver better imaging performance? Parametric down-conversion sources pro...
Correlated photon pairs produced by a spontaneous parametric down conversion (SPDC) process can be u...
We transmitted O-band heralded photons over 10 km of optical fiber in a proof-of-concept experiment ...
Communicating information at the few photon level typically requires some complexity in the transmit...
Imaging based on the induced coherence effect makes use of photon pairs to obtain information of an ...
Conventional imaging systems rely upon illumination light that is scattered or transmitted by the ob...
Ghost imaging can be performed using either quantum or classical states of light that possess strong...
One of the challenging real-world problems in the communication network is to secure the communicati...
We propose and experimentally demonstrate an optical steganography method in which a data signal is ...
To evidence multimode spatial entanglement of spontaneous down-conversion, detector arrays allow a f...