1.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Basic ScienceKR86 papers
- Seoul National UniversityKR79 papers
- Korea University of Science and TechnologyKR57 papers
- Kyungpook National UniversityKR52 papers
- Sejong UniversityKR51 papers
- Korea UniversityKR48 papers
- Korea Advanced Institute of Science and TechnologyKR37 papers
- Ewha Womans UniversityKR36 papers
- Sungkyunkwan UniversityKR35 papers
- The University of TokyoJP35 papers
- Yale UniversityUS30 papers
- Chung-Ang UniversityKR29 papers
43 papers · 1 filter
Distributed quantum sensing with multi-mode states
Dong-Hyun Kim, Seongjin Hong, Yong-Su Kim +4
Distributed quantum sensing, which estimates a global parameter across distant nodes, has attracted significant interest for applications such as quantum imaging, sensor networks,…
Distance-based measures and Epsilon-measures for measurement-based quantum resources
Arindam Mitra, Sumit Mukherjee, Changhyoup Lee
Quantum resource theories provide a structured and elegant framework for quantifying quantum resources. While state-based resource theories have been extensively studied, their mea…
Long-lived quantum correlation by cavity-mediated subradiance
Kyu-Young Kim, Jin Hee Lee, Woong Bae Jeon +5
Cooperative effects such as super(sub)radiance in quantum systems arise from the interplay among quantum emitters. While bright superradiant states have been extensively studied an…
Improving the accuracy of circuit quantization using the electromagnetic properties of superconductors
Seong Hyeon Park, Gahyun Choi, Eunjong Kim +6
Recent advances in quantum information processing with superconducting qubits have fueled a growing demand for scaling and miniaturizing circuit layouts. Despite significant progre…
Persistent quantum advantage with definite photon-number states in lossy multiple-phase estimation
Min Namkung, Dong-Hyun Kim, Seongjin Hong +2
Multiple-phase estimation exploiting quantum states has broad applications in novel sensing and imaging technologies. However, the unavoidable presence of lossy environments in pra…
Constrained Measurement Incompatibility from Generalised Contextuality of Steered Preparation
Sumit Mukherjee, A. K. Pan
In a bipartite Bell scenario involving two local measurements per party and two outcome per measurement, the measurement incompatibility in one wing is both necessary and sufficien…
Quantum plasmonic sensing by Hong-Ou-Mandel interferometry
Seungjin Yoon, Yu Sung Choi, Mark Tame +3
We propose a quantum plasmonic sensor using Hong-Ou-Mandel (HOM) interferometry that measures the refractive index of an analyte, embedded in a plasmonic beam splitter composed of…
Quantum enhanced distributed phase sensing with a truncated SU(1,1) interferometer
Seongjin Hong, Matthew A. Feldman, Claire E. Marvinney +5
In recent years, distributed quantum sensing has gained interest for a range of applications requiring networks of sensors, from global-scale clock synchronization to high energy p…
Optimal multiple-phase estimation with multi-mode NOON states against photon loss
Min Namkung, Dong-Hyun Kim, Seongjin Hong +3
Multi-mode NOON states can quantum-enhance multiple-phase estimation in the absence of photon loss. However, a multi-mode NOON state is known to be vulnerable to photon loss, and i…
Characterization of Broadband Purcell Filters with Compact Footprint for Fast Multiplexed Superconducting Qubit Readout
Seong Hyeon Park, Gahyun Choi, Gyunghun Kim +6
Engineering the admittance of external environments connected to superconducting qubits is essential, as increasing the measurement speed introduces spontaneous emission loss to su…
Robustness of the projected squeezed state protocol
B. J. Alexander, J. J. Bollinger, M. S. Tame
Projected squeezed (PS) states are multipartite entangled states generated by unitary spin squeezing, followed by a collective quantum measurement and post-selection. They can lead…
Quantum Illumination and Quantum Radar: A Brief Overview
Athena Karsa, Alasdair Fletcher, Gaetana Spedalieri +1
Quantum illumination (QI) and quantum radar have emerged as potentially groundbreaking technologies, leveraging the principles of quantum mechanics to revolutionise the field of re…
Quantum diamond microscopy with optimized magnetic field sensitivity and sub-ms temporal resolution
Sangwon Oh, Seong-Joo Lee, Jeong Hyun Shim +2
Quantum diamond magnetometers using lock-in detection have successfully detected weak bio-magnetic fields from neurons, a live mammalian muscle, and a live mouse heart. This opens…
Theoretical studies on quantum imaging with time-integrated single-photon detection under realistic experimental conditions
Byeong-Yoon Go, Changhyoup Lee, Kwang-Geol Lee
We study a quantum-enhanced differential measurement scheme that uses quantum probes and single-photon detectors to measure a minute defect in the absorption parameter of an analyt…
Optical dynamic nuclear polarization of C spins in diamond at a low field with multi-tone microwave irradiation
Vladimir Vladimirovish Kavtanyuk, Hyun Joon Lee, Sangwon Oh +2
Most of dynamic nuclear polarization (DNP) has been requiring helium cryogenics and strong magnetic fields for a high degree of polarization. In this work, we instead demonstrate a…
Distributed quantum phase sensing for arbitrary positive and negative weights
Changhun Oh, Liang Jiang, Changhyoup Lee
Estimation of a global parameter defined as a weighted linear combination of unknown multiple parameters can be enhanced by using quantum resources. Advantageous quantum strategies…
Experimental measurement of kinetic parameters using quantum plasmonic sensing
K. T. Mpofu, C. Lee, G. E. M. Maguire +2
Kinetic models are essential for describing how molecules interact in a variety of biochemical processes. The estimation of a model's kinetic parameters by experiment enables resea…
Measuring kinetic parameters using quantum plasmonic sensing
K. T. Mpofu, C. Lee, G. E. M. Maguire +2
The measurement of parameters that describe kinetic processes is important in the study of molecular interactions. It enables a deeper understanding of the physical mechanisms unde…
Multiplexed sensing of magnetic field and temperature in real time using a nitrogen vacancy spin ensemble in diamond
Jeong Hyun Shim, Seong-Joo Lee, Santosh Ghimire +7
Nitrogen-Vacancy (NV) spin in diamond is a versatile quantum sensor, being able to measure physical quantities such as magnetic field, electric field, temperature, and pressure. In…
Experimental Learning of Pure Quantum States using Sequential Single-Shot Measurement Outcomes
Sang Min Lee, Hee Su Park, Jinhyoung Lee +2
We experimentally implement a machine-learning method for accurately identifying unknown pure quantum states. The method, called single-shot measurement learning, achieves the theo…
Efficient High-dimensional Quantum Key Distribution with Hybrid Encoding
Yonggi Jo, Hee Su Park, Seung-Woo Lee +1
We propose a schematic setup of quantum key distribution (QKD) with an improved secret key rate based on high-dimensional quantum states. Two degrees-of-freedom of a single photon,…
Quantum teleportation of shared quantum secret
Sang Min Lee, Seung-Woo Lee, Hyunseok Jeong +1
Quantum teleportation allows to transfer unknown quantum states between distant parties. It is not only a primitive of quantum communications but also an essential task in realizat…
Dissipation-driven nonclassical state generation in optomechanics with squeezed light
Jae Hoon Lee, Junho Suh, Hyojun Seok
We study an optomechanical system for the purpose of generating a nonclassical mechanical state when a mechanical oscillator is quadratically coupled to a single-mode cavity field…
Learning unknown pure quantum states
Sang Min Lee, Jinhyoung Lee, Jeongho Bang
We propose a learning method for estimating unknown pure quantum states. The basic idea of our method is to learn a unitary operation that transforms a given unknown stat…