1 citations · 2 across the 10 of their papers we have counts for
10 papers
Quantum Error Correction Scheme for Fully Correlated Noise
Chi-Kwong Li, Yuqiao Li, Diane Christine Pelejo +1
This paper investigates quantum error correction schemes for fully-correlated noise channels on an -qubit system, where error operators take the form , with b…
A Note on Parallel Distinguishability of two Quantum Operations
Chi-Kwong Li, Yue Liu, Chao Ma +1
We consider a homogeneous system of linear equations of the form arising from the distinguishability of two quantum operations by uses in parallel…
On Sign Pattern Matrices that Allow or Require Algebraic Positivity
Jean Leonardo Abagat, Diane Christine Pelejo
A square matrix with real entries is said to be algebraically positive (AP) if there exists a real polynomial such that all entries of the matrix . A square sign pa…
Minimum number of non-zero-entries in a stable matrix
Christopher Hambric, Chi-Kwong Li, Diane Christine Pelejo +1
We prove that if a matrix is potentially stable, then it has at least 11 non-zero entries. The results for matrix with up to 6 are known previously. We…
Construction of quantum states with special properties by projection methods
Xuefeng Duan, Chi-Kwong Li, Diane Christine Pelejo
We use projection methods to construct (global) quantum states with prescribed reduced (marginal) states, and possibly with some special properties such as having specific eigenval…
Optimal Bounds on Functions of Quantum States under Quantum Channels
Chi-Kwong Li, Diane Christine Pelejo, Kuo-Zhong Wang
Let be quantum states and be a scalar function such as the trace norm, the fidelity, and the relative entropy, etc. We determine optimal…
Product of two positive contractions
Chi-Kwong Li, Diane Christine Pelejo, Kuo-Zhong Wang
Several characterizations are given for a square matrix that can be written as the product of two positive (semidefinite) projections. Based on one of these characterizations, and…
Minkowski product of convex sets and product numerical range
Chi-Kwong Li, Diane Christine Pelejo, Yiu-Tung Poon +1
Let be two compact convex sets in . Their Minkowski product is the set . We show that the set is star-shaped i…
Projection methods in quantum information science
Yuen-Lam Cheung, Dmitriy Drusvyatskiy, Chi-Kwong Li +2
We consider the problem of constructing quantum operations or channels, if they exist, that transform a given set of quantum states to another such set $\{\ha…
Decomposition of quantum gates
Chi-Kwong Li, Diane Pelejo
A recurrence scheme is presented to decompose an -qubit unitary gate to the product of no more than single qubit gates with small number of controls, where .…