168 citations · 1.1k across the 45 of their papers we have counts for
5 papers · 1 filter
Identifying quantumness via addition-then-subtraction operation
Su-Yong Lee, Changsuk Noh, Dagomir Kaszlikowski
We propose a measure of quantumness based on an addition-then-subtraction operation. We demonstrate how this measure can distinguish between classical and bosonic particles by inve…
Generating arbitrary photon-number entangled states for continuous-variable quantum informatics
Su-Yong Lee, Jiyong Park, Hai-Woong Lee +1
We propose two experimental schemes that can produce an arbitrary photon-number entangled state (PNES) in a finite dimension. This class of entangled states naturally includes non-…
Second-order superposition operations via Hong-Ou-Mandel interference
Su-Yong Lee, Hyunchul Nha
We propose an experimental scheme to implement a second-order nonlocal superposition operation and its variants by way of Hong-Ou-Mandel interference. The second-order coherent ope…
Quantum linear amplifier enhanced by photon subtraction and addition
Ho-Joon Kim, Su-Yong Lee, Se-Wan Ji +1
A deterministic quantum amplifier inevitably adds noise to an amplified signal due to the uncertainty principle in quantum physics. We here investigate how a quantum-noise-limited…
Efficient entanglement criteria beyond Gaussian limits using Gaussian measurements
Hyunchul Nha, Su-Yong Lee, Se-Wan Ji +1
We present a formalism to derive entanglement criteria beyond the Gaussian regime that can be readily tested by only homodyne detection. The measured observable is the Einstein-Pod…