Search Results - "Chau, H F"

Quantum and Classical Data Transmission through Completely Depolarizing Channels in a Superposition of Cyclic Orders by Chiribella, Giulio, Wilson, Matt, Chau, H F

“…Completely depolarizing channels are often regarded as the prototype of physical processes that are useless for communication: any message that passes through…”
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Reducing the impact of adaptive optics lag on optical and quantum communications rates from rapidly moving sources by Chan, Kai Sum, Chau, H. F.

“…Wavefront of light passing through the turbulent atmosphere gets distorted. This causes signal loss in free-space optical communication as the light beam…”
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Unconditional Security of Quantum Key Distribution Over Arbitrarily Long Distances by Lo, Hoi-Kwong, Chau, H. F.

“…Quantum key distribution is widely thought to offer unconditional security in communication between two users. Unfortunately, a widely accepted proof of its…”
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Application of an improved version of McDiarmid inequality in finite-key-length decoy-state quantum key distribution by Chau, H F, Ng, K C Joseph

“…In practical decoy-state quantum key distribution, the raw key length is finite. Thus, deviation of the estimated single photon yield and single photon error…”
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Efficient quantum key distribution scheme and a proof of its unconditional security by LO, Hoi-Kwong, CHAU, H. F, ARDEHALI, M

“…We devise a simple modification that essentially doubles the efficiency of the BB84 quantum key distribution scheme proposed by Bennett and Brassard.We also…”
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Universally composable and customizable post-processing for practical quantum key distribution by Ma, Xiongfeng, Fung, Chi-Hang Fred, Boileau, Jean-Christian, Chau, H.F.

“…In quantum key distribution (QKD), a secret key is generated between two distant parties by transmitting quantum states. Experimental measurements on the…”
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Weighted assortative and disassortative networks model by Leung, C.C., Chau, H.F.

“…Real-world networks process structured connections since they have non-trivial vertex degree correlation and clustering. Here we propose a toy model of…”
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Quantum key distribution with delayed privacy amplification and its application to the security proof of a two-way deterministic protocol by Fung, Chi-Hang Fred, Ma, Xiongfeng, Chau, H. F., Cai, Qing-yu

“…Privacy amplification (PA) is an essential postprocessing step in quantum key distribution (QKD) for removing any information an eavesdropper may have on the…”
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Chau–Wang–Wong17 scheme is experimentally more feasible than the six-state scheme by Chau, H. F., Yin, Zhen-Qiang, Wang, Shuang, Chen, Wei, Han, Zheng-Fu

“…Recently, Chau et al. (Phys Rev A 95:022311, 2017 ) reported a quantum key distribution (QKD) scheme using four-dimensional qudits. Surprisingly, as a function…”
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Postglitch Relaxation of the Crab Pulsar after Its First Four Major Glitches: The Combined Effects of Crust Cracking, Formation of Vortex Depletion Region and Vortex Creep by Alpar, M. A., Chau, H. F., Cheng, K. S., Pines, D.

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Differential-phase-shift quantum key distribution using heralded narrow-band single photons by Liu, Chang, Zhang, Shanchao, Zhao, Luwei, Chen, Peng, Fung, C-H F, Chau, H F, Loy, M M T, Du, Shengwang

“…We demonstrate the first proof of principle differential phase shift (DPS) quantum key distribution (QKD) using narrow-band heralded single photons with…”
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Single-word intelligibility in speakers with repaired cleft palate by Whitehill, Tara L., Chau, Cynthia H.-F.

“…Many speakers with repaired cleft palate have reduced intelligibility, but there are limitations with current procedures for assessing intelligibility. The aim…”
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Multiple choice minority game with different publicly known histories by Chau, H F, Chow, F K, Ho, K H, Man, W C

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A Unifying Quantum Speed Limit For Time-Independent Hamiltonian Evolution by Chau, H. F, Zeng, Wenxin

“…Quantum speed limit (QSL) is the study of fundamental limits on the evolution time of quantum systems. For instance, under the action of a time-independent…”
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Is Quantum Bit Commitment Really Possible? by Lo, Hoi-Kwong, Chau, H. F.

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On the critical packet injection rate of a preferential next-nearest neighbor routing traffic model on Barabási-Albert networks by Chau, H. F., Chan, H. Y., Chow, F. K.

“…Recently, Yin et al. [Eur. Phys. J. B 49 , 205 (2006)] introduced an efficient small-world network traffic model using preferential next-nearest neighbor…”
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On the Rotation and Magnetic Field Evolution of Superconducting Strange Stars by Chau, H. F

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Security Of Finite-Key-Length Measurement-Device-Independent Quantum Key Distribution Using Arbitrary Number Of Decoys by Chau, H. F

“…Phys. Rev. A 102, 012611 (2020) In quantum key distribution, measurement-device-independent and decoy-state techniques enable the two cooperative agents to…”
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Why quantum bit commitment and ideal quantum coin tossing are impossible by Lo, Hoi-Kwong, Chau, H.F.

“…There had been well-known claims of unconditionally secure quantum protocols for bit commitment. However, we, and independently Mayers, showed that all…”
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Quantum and Classical Data Transmission through Completely Depolarising Channels in a Superposition of Cyclic Orders by Chiribella, Giulio, Wilson, Matt, Chau, H. F

“…Phys. Rev. Lett. 127, 190502 (2021) Completely depolarising channels are often regarded as the prototype of physical processes that are useless for…”
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