84 citations · 379 across the 37 of their papers we have counts for
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Induced Metric And Matrix Inequalities On Unitary Matrices
H. F. Chau, C. -K. Li, Y. -T. Poon +1
Recently, Chau [Quant. Inform. & Comp. 11, 721 (2011)] showed that one can define certain metrics and pseudo-metrics on U(n), the group of all unitary matrices, based o…
Recursive Encoding and Decoding of Noiseless Subsystem and Decoherence Free Subspace
Chi-Kwong Li, Mikio Nakahara, Yiu-Tung Poon +2
When the environmental disturbace to a quantum system has a wavelength much larger than the system size, all qubits localized within a small area are under action of the same error…
Efficient Quantum Error Correction for Fully Correlated Noise
Chi-Kwong Li, Mikio Nakahara, Yiu-Tung Poon +2
We investigate an efficient quantum error correction of a fully correlated noise. Suppose the noise is characterized by a quantum channel whose error operators take fully correlate…
A note on the realignment criterion
Chi-Kwong Li, Yiu-Tung Poon, Nung-Sing Sze
For a quantum state in a bipartite system represented as a density matrix, researchers used the realignment matrix and functions on its singular values to study the separability of…
Recovery in quantum error correction for general noise without measurement
Chi-Kwong Li, Mikio Nakahara, Yiu-Tung Poon +2
It is known that one can do quantum error correction without syndrome measurement, which is often done in operator quantum error correction (OQEC). However, the physical realizatio…