55 citations · 480 across the 25 of their papers we have counts for
26 papers
Preservability of Measurement Incompatibility: Purification, Activation, and a No-Go Theorem
Chao-Hsien Wu, Franco Nori, Huan-Yu Ku
Measurement incompatibility is a fundamental quantum resource that enables advantages in many quantum information tasks, including cryptography and communication. However, unavoida…
Observation of Full Hierarchy of Temporal Quantum Correlations with a Superconducting Qubit
Hao-Cheng Weng, Chen-Yeh Wei, Huan-Yu Ku +3
Temporal quantum correlations provide an intriguing way of testing quantumness at the macroscopic level, with a logical hierarchy present among the quantum correlations associated…
Dynamical resource theory of incompatibility preservability
Chung-Yun Hsieh, Benjamin Stratton, Chao-Hsien Wu +1
The uncertainty principle is one of quantum theory's most foundational features. It underpins a quantum phenomenon called measurement incompatibility -- two physical observables of…
Entanglement-breaking channels are a quantum memory resource
Lucas B. Vieira, Huan-Yu Ku, Costantino Budroni
Entanglement-breaking channels (equivalently, measure-and-prepare channels) are an important class of quantum operations noted for their ability to destroy multipartite spatial qua…
Visually quantifying single-qubit quantum memory
Wan-Guan Chang, Chia-Yi Ju, Guang-Yin Chen +2
To store quantum information, quantum memory plays a central intermediate ingredient in a network. The minimal criterion for a reliable quantum memory is the maintenance of the ent…
Unveiling quantum steering by quantum-classical uncertainty complementarity
Kuan-Yi Lee, Jhen-Dong Lin, Karel Lemr +5
One of the remarkable aspects of quantum steering is its ability to violate local uncertainty complementarity relations. In this vein of study, various steering witnesses have been…
Characterisation and fundamental limitations of irreversible stochastic steering distillation
Chung-Yun Hsieh, Huan-Yu Ku, Costantino Budroni
Steering resources, central for quantum advantages in one-sided device-independent quantum information tasks, can be enhanced via local filters. Recently, reversible steering conve…
Measurement incompatibility cannot be stochastically distilled
Huan-Yu Ku, Chung-Yun Hsieh, Costantino Budroni
We show that the incompatibility of a set of measurements cannot be increased by subjecting them to a filter, namely, by combining them with a device that post-selects the incoming…
Deep learning the hierarchy of steering measurement settings of qubit-pair states
Hong-Ming Wang, Huan-Yu Ku, Jie-Yien Lin +1
Quantum steering has attracted increasing research attention because of its fundamental importance, as well as its applications in quantum information science. Here we leverage the…
Maxwell's two-demon engine under pure dephasing noise
Feng-Jui Chan, Yi-Te Huang, Jhen-Dong Lin +4
The interplay between thermal machines and quantum correlations is of great interest in both quantum thermodynamics and quantum information science. Recently, a quantum Szilárd eng…
Steering-enhanced quantum metrology using superpositions of noisy phase shifts
Kuan-Yi Lee, Jhen-Dong Lin, Adam Miranowicz +3
Quantum steering is an important correlation in quantum information theory. A recent work [Nat. Commun. 12, 2410 (2021)] showed that quantum steering is also useful for quantum met…
Complete classification of steerability under local filters and its relation with measurement incompatibility
Huan-Yu Ku, Chung-Yun Hsieh, Shin-Liang Chen +2
Quantum steering is the central resource for one-sided device-independent quantum information. It is manipulated via one-way local operations and classical communication, such as l…
Deterministic one-way logic gates on a cloud quantum computer
Zhi-Peng Yang, Alakesh Baishya, Huan-Yu Ku +6
One-way quantum computing is a promising candidate for fault-tolerant quantum computing. Here, we propose new protocols to realize a deterministic one-way CNOT gate and one-way …
Quantifying Quantumness of Channels Without Entanglement
Huan-Yu Ku, Josef Kadlec, Antonín Černoch +8
Quantum channels breaking entanglement, incompatibility, or nonlocality are defined as such because they are not useful for entanglement-based, one-sided device-independent, or dev…
Hidden nonmacrorealism: reviving the Leggett-Garg inequality with stochastic operations
Huan-Yu Ku, Hao-Cheng Weng, Yen-An Shih +5
The Leggett-Garg inequality (LGI) distinguishes nonmacrorealistic channels from macrorealistic ones by constraining the experimental outcomes of the underlying system. In this work…
Benchmarking Quantum State Transfer on Quantum Devices using Spatio-Temporal Steering
Yi-Te Huang, Jhen-Dong Lin, Huan-Yu Ku +1
Quantum state transfer (QST) provides a method to send arbitrary quantum states from one system to another. Such a concept is crucial for transmitting quantum information into the…
Quantum steering as a witness of quantum scrambling
Jhen-Dong Lin, Wei-Yu Lin, Huan-Yu Ku +3
Quantum information scrambling describes the delocalization of local information to global information in the form of entanglement throughout all possible degrees of freedom. A nat…
Robust self-testing of steerable quantum assemblages and its applications on device-independent quantum certification
Shin-Liang Chen, Huan-Yu Ku, Wenbin Zhou +2
Given a Bell inequality, if its maximal quantum violation can be achieved only by a single set of measurements for each party or a single quantum state, up to local unitaries, one…
Device-independent verification of Einstein-Podolsky-Rosen steering
Yuan-Yuan Zhao, Chao Zhang, Shuming Cheng +10
Entanglement lies at the heart of quantum mechanics, and has been identified an essential resource for diverse applications in quantum information. If entanglement could be verifie…
Experimental test of non-macrorealistic cat-states in the cloud
Huan-Yu Ku, Neill Lambert, Fong-Ruei Jhan +3
The Leggett-Garg inequality attempts to classify experimental outcomes as arising from one of two possible classes of physical theories: those described by macrorealism (which obey…
Experimental demonstration of measurement-device-independent measure of quantum steering
Yuan-Yuan Zhao, Huan-Yu Ku, Shin-Liang Chen +6
Within the framework of quantum refereed steering games, quantum steerability can be certified without any assumption on the underlying state nor the measurements involved. Such a…
Measurement-device-independent measure of steerability and witnesses for all steerable resources
Huan-Yu Ku, Shin-Liang Chen, Hong-Bin Chen +2
The fact that nonlocality implies steering enables one to certify steerability by using a Bell inequality violation. Such a certification is device-independent (DI), i.e., one make…
Probing higher-order transitions through scattering of microwave photons in the ultrastrong-coupling regime of circuit QED
Guan-Ting Chen, Po-Chen Kuo, Huan-Yu Ku +2
Higher-order transitions can occur in the ultrastrong-coupling regime of circuit QED through virtual processes governed by the counter-rotating interactions. We propose a feasible…
Hierarchy in temporal quantum correlations
Huan-Yu Ku, Shin-Liang Chen, Neill Lambert +2
Einstein-Podolsky-Rosen (EPR) steering is an intermediate quantum correlation that lies in between entanglement and Bell non-locality. Its temporal analogue, temporal steering, has…