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01-15
2021
Total variance and invariant information in complementary measurements
Abstract: We investigate the total variance of a quantum state with respect to a complete set of mutually complementary measurements and its relation to the Brukner–Zeilinger invariant information. ...
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04-15
2015
On zero-error communication via quantum channels in the presence of noiseless fe
Abstract: We initiate the study of zero-error communication via quantum channels assisted by noiseless feedback link of unlimited quantum capacity, generalizing Shannon's zero-error communication the...
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10-14
2015
Quantum Journal Club: Quantum Dynamics with Spatiotemporal Control of Interactio
Abstract: Optical control of atomic interactions in quantum gases is a long-sought goal of cold atom research. Previous experiments have been hindered by rapid decay of the quantum gas and parasitic ...
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09-10
2021
High coherence fluxonium and its two-qubit gate scheme
Abstract: Improving control over physical qubits is a crucial component of quantum computing research. We report our recent fluxonium qubit with coherence time reaching T2*= 1.48±0.13 ms [1], which e...
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11-22
2012
Experiments of quantum information processing
Abstract: Title: Experiments of quantum information processing Speaker: Dr. Xiu-ying Chang (常秀英) Paper 1: Quantum teleportation using active feed-forward between two Canary Islands Authors: Xia...
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09-29
2021
Efficient estimation of quantum coherence
Abstract: Quantification of coherence lies at the heart of quantum information processing and fundamental physics. Exact evaluation of coherence measures generally needs a full reconstruction of the ...