597 citations · 3k across the 37 of their papers we have counts for
4 papers · 1 filter
Mismatched-basis statistics enable quantum key distribution with uncharacterized qubit sources
Zhen-Qiang Yin, Chi-Hang Fred Fung, Xiongfeng Ma +6
In the postprocessing of quantum key distribution, the raw key bits from the mismatched-basis measurements, where two parties use different bases, are normally discarded. Here, we…
Solution to time-energy costs of quantum channels
Chi-Hang Fred Fung, H. F. Chau, Chi-Kwong Li +1
We derive a formula for the time-energy costs of general quantum channels proposed in [Phys. Rev. A 88, 012307 (2013)]. This formula allows us to numerically find the time-energy c…
Physical time-energy cost of a quantum process determines its information fidelity
Chi-Hang Fred Fung, H. F. Chau
A quantum system can be described and characterized by at least two different concepts, namely, its physical and informational properties. Here, we explicitly connect these two con…
Time-Energy Costs of Quantum Measurements
Chi-Hang Fred Fung, H. F. Chau
Time and energy of quantum processes are a tradeoff against each other. We propose to ascribe to any given quantum process a time-energy cost to quantify how much computation it pe…