Microwave Quantum Radar using a Josephson Traveling Wave Parametric Amplifier

Quantum enhanced radio detection and ranging with solid spins

“…In recent decade, quantum illumination [30][31][32][33] and quantum detector [34][35][36][37][38] have been proposed to improve the performance of a radar system. Comparing with other quantum RF receivers, such as Rydberg atoms and superconductors (where sophisticated setups or low temperature are needed), the NV center in diamond shows the advantages of robustness, high spatial resolution and miniaturization [39][40][41][42][43].…”

Long-Range Entangled Quantum Noise Radar Over Order of Kilometer

“…The features of our proposed system is given in the last column of table 2. In our system, we suggest to utilize a JTWPA implemented in [69] as the entangled microwave photon-pair source that generates signal and idler fields with frequencies f s = f i = 9 GHz with N s = 0.05 photon per mode on average. We consider that the total gain at transmitter to be 77 dB, which is same as one has been taken in [28].…”

Purity in the QTMS radar

“…The model presented in this work is the QTMS prototype radar [22,24,26,27], whose performance can be summarized in 4 parts [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]: Generate a current of entangled photon pairs (signal/idler) by JPA, amplify and transmit the signal to the target, and record the idler. After receiving the reflected signal, amplify the signal and idler again and apply an analog-to-digital (ADC) converter.…”

“…The Gaussian states play a significant role in quantum systems, such as quantum illumination , quantum radar [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39], light field modes [40,41], quantum Lidar [42,43], cold atoms [44], and excitons in photonic cavities [45]. The Gaussian states can be easily generated by available sources and controlled experimentally [46].…”