214 citations · 326 across the 8 of their papers we have counts for
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Autonomous Quantum Error Correction of Spin-Oscillator Hybrid Qubits
Sungjoo Cho, Ju-yeon Gyhm, Hyukjoon Kwon +1
We propose a novel measurement-free scheme for stabilizing a spin-oscillator hybrid qubit via autonomous quantum error correction. The engineered Lindbladian renders the code space…
Diabatic quantum annealing for training energy-based generative models
Gilhan Kim, Ju-Yeon Gyhm, Daniel K. Park
Energy-based generative models, such as restricted Boltzmann machines (RBMs), require unbiased Boltzmann samples for effective training. Classical Markov chain Monte Carlo methods,…
Gaussian Open Quantum Dynamics and Isomorphism to Superconformal Symmetry
Ju-Yeon Gyhm, Dario Rosa, Dominik Šafránek
Understanding the Lie algebraic structure of a physical problem often makes it easier to find its solution. In this paper, we focus on the Lie algebra of Gaussian-conserving supero…
Fundamental Scaling Limit in Critical Quantum Metrology
Ju-Yeon Gyhm, Hyukjoon Kwon, Myung-Joong Hwang
Critical quantum metrology aims to harness critical properties near quantum phase transitions to enhance parameter estimation precision. However, critical slowing down inherently l…
Dynamics of a small quantum system open to a bath with thermostat
Chulan Kwon, Ju-Yeon Gyhm
We investigate dynamics of a small quantum system open to a bath with thermostat. We introduce another bath, called super bath, weakly coupled with the bath to provide it with ther…
Minimal time required to charge a quantum system
Ju-Yeon Gyhm, Dario Rosa, Dominik Šafránek
We introduce a quantum charging distance as the minimal time that it takes to reach one state (charged state) from another state (depleted state) via a unitary evolution, assuming…
Beneficial and detrimental entanglement for quantum battery charging
Ju-Yeon Gyhm, Uwe R. Fischer
We establish a general implementation-independent approach to assess the potential advantage of using highly entangled quantum states between the initial and final states of the ch…
Quantum Charging Advantage Cannot Be Extensive Without Global Operations
Ju-Yeon Gyhm, Dominik Šafránek, Dario Rosa
Quantum batteries are devices made from quantum states, which store and release energy in a fast and efficient manner, thus offering numerous possibilities in future technological…