20 citations · 78 across the 11 of their papers we have counts for
12 papers
Quantum Radar Cross Section with two-photon entangled states
Sunghwa Kang, Jihwan Kim, Zaeill Kim +7
We study two-photon entangled states for quantum radar cross section (QRCS), which is an extension of a single-photon QRCS formula. Since signal-idler entanglement does not provide…
Quantum target ranging with Hetero-Homodyne detection
Sangwoo Jeon, Yonggi Jo, Jihwan Kim +4
Quantum target ranging, which estimates a target position using entangled photon pairs, is known to offer an error-probability advantage over classical ranging strategies. Yet, rea…
Single-shot detection limits of quantum illumination with multi-qudit states
Sunghwa Kang, Yonggi Jo, Jihwan Kim +3
Quantum illumination is a protocol for detecting a low-reflectivity target by using two-mode entangled states composed of signal and idler modes, which can outperform unentangled s…
Microwave Quantum Illumination with Optical Memory and Single-Mode Phase-Conjugate Receiver
Sangwoo Jeon, Jihwan Kim, Duk Y. Kim +3
Microwave quantum illumination with entangled pairs of microwave signal and optical idler modes, can achieve the sub-optimal performance with joint measurement of the signal and id…
Gaussian Quantum Illumination via Monotone Metrics
Dong Hwan Kim, Yonggi Jo, Duk Y. Kim +5
Quantum illumination is to discern the presence or absence of a low reflectivity target, where the error probability decays exponentially in the number of copies used. When the tar…
Bound for Gaussian-state Quantum illumination using direct photon measurement
Su-Yong Lee, Dong Hwan Kim, Yonggi Jo +3
It is important to find feasible measurement bounds for quantum information protocols. We present analytic bounds for quantum illumination with Gaussian states when using an on-off…
Quantum-secured single-pixel imaging with enhanced security
Jaesung Heo, Junghyun Kim, Taek Jeong +4
In this paper, we propose a novel quantum-secured single-pixel imaging method that utilizes non-classical correlations of a photon pair. Our method can detect any attempts to decei…
Squeezing Limit of the Josephson Ring Modulator as a Non-Degenerate Parametric Amplifier
Dong Hwan Kim, Su-Yong Lee, Zaeill Kim +2
Two-mode squeezed vacuum states are a crucial component of quantum technologies. In the microwave domain, they can be produced by Josephson ring modulator which acts as a three-wav…
Noise-robust single-pixel imaging in photon counting regime with a pulsed source
Junghyun Kim, Sangkyung Lee, Yonggi Jo +6
We present a method to classically enhance noise-robustness of single-pixel imaging in photon counting regime with a pulsed source. By using time-domain cross-correlations between…
Heralded single-pixel imaging with high loss-resistance and noise-robustness
Junghyun Kim, Taek Jeong, Su-Yong Lee +6
Imaging with non-classically correlated photon-pairs takes advantages over classical limits in terms of sensitivity and signal-to-noise ratio. However, it is still a challenge to a…
Observable bound for Gaussian illumination
Su-Yong Lee, Yonggi Jo, Taek Jeong +6
We propose observable bounds for Gaussian illumination to maximize the signal-to-noise ratio, which minimizes the discrimination error between the presence and absence of a low-ref…
Surviving Entanglement in Optic-Microwave Conversion by Electro-Optomechanical System
Yonggi Jo, Su-Yong Lee, Yong Sup Ihn +3
In recent development of quantum technologies, a frequency conversion of quantum signals has been studied widely. We investigate the optic-microwave entanglement that is generated…