  Quantum Radar is a promising technology that could have a strong impact on
the civilian and military realms. In this study we introduce a new concept
design for implementing a Quantum Radar, based on the time and polarization
correlations of the entangled photons for detection and identification and
tracking of high-speed targets. The design is focused on extracting high
resolution details of the target with precision timing of entangled photons
that provides important operational capabilities like distinguishing a target
from a decoy. The quantum entanglement properties guarantee the legitimacy of
the photons captured by the search telescope. Time correlations of the photon
detection events can be extracted via cross-correlation operation between two
sets of photon detection time-tags for the entangled photons. The fact that the
wavelengths of the entangled photons can be tuned also makes the Quantum Radar
concept an enticing candidate for tracking stealth objects. We present the
proof-of-principle test results of the Quantum Radar and discuss the technical
challenges and limitations of the design.
