217 citations · 1.1k across the 99 of their papers we have counts for
71 papers · 1 filter
Mean-State Entropy Hierarchies and Classical Communication through Quantum Convolutions
Chunhe Xiong, Sunho Kim, Qing-hua Zhang +2
Quantum convolution provides a discrete-variable analogue of classical convolution, with the mean state capturing the stabilizer structure preserved under repeated convolution. We…
Private Capacity of Quantum Channels Induced by Non-stabilizer Environmental States
Chunhe Xiong, Sunho Kim, Long Long +1
We investigate the private capacity of quantum channels using the recently proposed quantum convolution theory for discrete-variable quantum systems. We focus on the role of the ma…
On the Simulation Cost of Quantum Finite Automata
Zeyu Chen, Junde Wu
This paper identifies exact probabilistic simulation cost as the natural quantitative measure of quantum advantage for finite automata under strict cutpoints. It gives sharp simula…
Matrix encoding method in variational algorithm of calculating eigenvalues and generalized eigenvalues
Alexander I. Zenchuk, Junde Wu
We propose a variational method for constructing the eigenvalues and generalized eigenvalues for an arbitrary complex matrix. The quantum part of our algorithm is based…
Quantum Defect Analysis and Target-Orbit-Directed Correction via the Purpose-Oriented Framework: Applications to Entanglement Repairability and Teleportation Activation
Sunho Kim, Chunhe Xiong, Junde Wu
Quantum resource theories quantify advantages but suffer from ambiguous free sets, limiting target-oriented missions. We improve upon this by introducing a purpose-oriented framewo…
Arbitrary state creation via controlled measurement
Alexander I. Zenchuk, Wentao Qi, Junde Wu
The initial state creation is a starting point of many quantum algorithms and usually is considered as a separate subroutine not included into the algorithm itself. There are many…
Quantumly controlled measurement, Hermitian conjugation and normalization in matrix-manipulation algorithms
Edward B. Fel'dman, Alexander I. Zenchuk, Wentao Qi +1
In this paper, we solve three important problems that are revealed, in particular, to matrix-manipulation algorithms. The principal novelty is introducing the concept of quantumly…
Quantum algorithms for calculating determinant and inverse of matrix and solving linear algebraic systems
Alexander I. Zenchuk, Georgii A. Bochkin, Wentao Qi +2
We propose quantum algorithms, purely quantum in nature, for calculating the determinant and inverse of an matrix (depth is ) which is a simple mo…
Matrix manipulations via unitary transformations and ancilla-state measurements
Alexander I. Zenchuk, Wentao Qi, Asutosh Kumar +1
We propose protocols for calculating inner product, matrix addition and matrix multiplication based on multiqubit Toffoli-type and the simplest one-qubit operations and employ anci…
Dilation, Discrimination and Uhlmann's Theorem of Link Products of Quantum Channels
Qiang Lei, Liuheng Cao, Asutosh Kumar +1
The study of quantum channels is the most fundamental theoretical problem in quantum information and quantum communication theory. The link product theory of quantum channels is an…
Efficient quantum compression for identically prepared states with arbitrary dimensio
Zeyu Chen, Chunhe Xiong, Kamil Khadiev +1
Identical preparation creates permutation symmetry that can be used for lossless quantum compression. For copies of an unknown -dimensional pure state, the tensor-power inpu…
Entanglement and Teleportation in a 1-D Network with Repeaters
Ganesh Mylavarapu, Indranil Chakrabarty, Kaushiki Mukherjee +2
The most simplest form of quantum network is an one dimensional quantum network with a single player in each node. In remote entanglement distribution each of the players carry out…
Quantum Algorithms for the Shortest Common Superstring and Text Assembling Problems
Kamil Khadiev, Carlos Manuel Bosch Machado, Zeyu Chen +1
In this paper, we consider two versions of the Text Assembling problem. We are given a sequence of strings of total length that is a dictionary, and a string $t…
Entanglement as the cross-symmetric part of quantum discord
Chunhe Xiong, Sunho Kim, Asutosh Kumar +3
In this paper, we show that the minimal quantum discord over "cross-symmetric" state extensions is an entanglement monotone. In particular, we show that the minimal Bures distance…
Partial coherence versus entanglement
Sunho Kim, Chunhe Xiong, Shunlong Luo +2
We study partial coherence and its connections with entanglement. First, we provide a sufficient and necessary condition for bipartite pure state transformation under partial incoh…
Quantum algorithms for matrix operations and linear systems of equations
Wentao Qi, Alexandr I. Zenchuk, Asutosh Kumar +1
Fundamental matrix operations and solving linear systems of equations are ubiquitous in scientific investigations. Using the "Sender-Receiver" model, we propose quantum algorithms…
Uncertainty regions of observables and state-independent uncertainty relations
Lin Zhang, Shunlong Luo, Shao-Ming Fei +1
The optimal state-independent lower bounds for the sum of variances or deviations of observables are of significance for the growing number of experiments that reach the uncertaint…
Solvable dilation model of -symmetric systems
Minyi Huang, Ray-Kuang Lee, Qing-hai Wang +2
The dilation method is a practical way to experimentally simulate non-Hermitian, especially -symmetric quantum systems. However, the time-dependent dilation problem cannot…
Quantifying dynamical coherence with coherence measures
Sunho Kim, Chunhe Xiong, Asutosh Kumar +2
Quantum coherence, like entanglement, is a fundamental resource in quantum information. In recent years, remarkable progress has been made in formulating resource theory of coheren…
Characterizing entanglement using quantum discord over state extensions
Chunhe Xiong, Sunho Kim, Daowen Qiu +2
We propose a framework to characterize entanglement with quantum discord, both asymmetric and symmetric, over state extensions. In particular, we show that the minimal Bures distan…
Three Party Quantum Networks Created by Quantum Cloning
Manish Kumar Shukla, Minyi Huang, Indranil Chakrabarty +1
With progress in quantum technologies, the field of quantum networks has emerged as an important area of research. In the last few years, there has been substantial progress in und…
Converting coherence based on positive-operator-valued measures into entanglement
Sunho Kim, Chunhe Xiong, Asutosh Kumar +1
Quantum resource theories provide a diverse and powerful framework for extensively studying the phenomena in quantum physics. Quantum coherence, a quantum resource, is the basic in…
Extracting the internal nonlocality from the dilated Hermiticity
Minyi Huang, Ray-Kuang Lee, Junde Wu
To effectively realize a -symmetric system, one can dilate a -symmetric Hamiltonian to some global Hermitian one and simulate its evolution in the dilated Hermiti…
What are temporal correlations
Hai Wang, Ray-Kuang Lee, Manish Kumar Shukla +3
Space and time are crucial twins in physics. In quantum mechanics, spatial correlations already reveal nonclassical features, such as entanglement, and have bred many quantum techn…