Results 31 to 40 of about 357,987 (308)
Tight Exponential Analysis for Smoothing the Max-Relative Entropy and for Quantum Privacy Amplification [PDF]
IEEE Transactions on Information Theory, 2021 The max-relative entropy together with its smoothed version is a basic tool in quantum information theory. In this paper, we derive the exact exponent for the asymptotic decay of the small modification of the quantum state in smoothing the max-relative ...
Ke Li, Yongsheng Yao, Masahito Hayashi
semanticscholar +1 more source
Increasing the classical data throughput in quantum networks by combining quantum linear network coding with superdense coding [PDF]
Physical Review A, 2019 This paper shows how network coding and superdense coding can be combined to increase the classical data throughput by a factor $2-\epsilon$ (for arbitrarily small $\epsilon > 0$) compared to the maximum that could be achieved using either network coding
Steven Herbert
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Mutually Unbiased Measurements, Hadamard Matrices, and Superdense Coding [PDF]
IEEE Transactions on Information Theory, 2022 Mutually unbiased bases (MUBs) are highly symmetric bases on complex Hilbert spaces, and the corresponding rank-1 projective measurements are ubiquitous in quantum information theory.
M. Farkas, Jędrzej Kaniewski, A. Nayak
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Generation of time-varying orbital angular momentum beams with space-time-coding digital metasurface
Advanced Photonics, 2023 . The recently proposed extreme-ultraviolet beams with time-varying orbital angular momentum (OAM) realized by high-harmonic generation provide extraordinary tools for quantum excitation control and particle manipulation. However, such an approach is not
Jingxin Zhang +4 more
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APL Photonics, 2023 Advances in photonics require photon-number resolved simulations of quantum optical experiments with Gaussian states. We demonstrate a simple and versatile method to simulate the photon statistics of general multimode Gaussian states.
Erik Fitzke +2 more
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Advantage of the Key Relay Protocol Over Secure Network Coding
IEEE Transactions on Quantum Engineering, 2023 The key relay protocol (KRP) plays an important role in improving the performance and the security of quantum key distribution networks. On the other hand, there is also an existing research field called secure network coding (SNC), which has similar ...
Go Kato +2 more
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Auditing the ‘Social’ of Quantum Technologies: A Scoping Review
Societies, 2022 Various phrases such as “social implications”, social impact” and “ethical, legal and social implications” are used to indicate the impact of a given scientific or technological advancements on the ‘social’.
Gregor Wolbring
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Quantum Coding Theorem for Mixed States [PDF]
, 1995 We prove a theorem for coding mixed-state quantum signals. For a class of coding schemes, the von Neumann entropy $S$ of the density operator describing an ensemble of mixed quantum signal states is shown to be equal to the number of spin-$1/2$ systems ...
Anandan +11 more
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General formulas for capacity of classical-quantum channels [PDF]
, 2002 The capacity of a classical-quantum channel (or in other words the classical capacity of a quantum channel) is considered in the most general setting, where no structural assumptions such as the stationary memoryless property are made on a channel.
Hayashi, Masahito, Nagaoka, Hiroshi
core +6 more sources
Optimal entanglement formulas for entanglement-assisted quantum coding [PDF]
, 2008 We provide several formulas that determine the optimal number of entangled bits (ebits) that a general entanglement-assisted quantum code requires.
M. Wilde, T. Brun
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