Results 51 to 60 of about 4,229,081 (350)
Channel activation of CHSH nonlocality
New Journal of Physics, 2020 Quantum channels that break CHSH nonlocality on all input states are known as CHSH-breaking channels. In quantum networks, such channels are useless for distributing correlations that can violate the CHSH Inequality.
Yujie Zhang +3 more
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Detecting quantum capacities of continuous-variable quantum channels
Physical Review Research, 2022 Quantum communication channels and quantum memories are the fundamental building blocks of large-scale quantum communication networks. Estimating their capacity to transmit and store quantum information is crucial in order to assess the performance of ...
Ya-Dong Wu, Giulio Chiribella
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Asymptotics of quantum channels: conserved quantities, an adiabatic limit, and matrix product states [PDF]
Quantum, 2018 This work derives an analytical formula for the asymptotic state---the quantum state resulting from an infinite number of applications of a general quantum channel on some initial state. For channels admitting multiple fixed or rotating points, conserved
Victor V. Albert
semanticscholar +1 more source
Quantum channels as a categorical completion [PDF]
Logic in Computer Science, 2019 We propose a categorical foundation for the connection between pure and mixed states in quantum information and quantum computation. The foundation is based on distributive monoidal categories. First, we prove that the category of all quantum channels is
Mathieu Huot, S. Staton
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Noise effects on One-Pauli Channels [PDF]
Phys.Lett. A259 (1999) 349-354, 1999 The possibility of stochastic resonance of a quantum channel and hence the noise enhanced quantum channel capacity is explored by considering one-Pauli channels which are more classical like. The fidelity of the channel is also considered.
arxiv +1 more source
Quantifying the resource content of quantum channels: An operational approach [PDF]
Physical Review A, 2018 We propose a general method to operationally quantify the resourcefulness of quantum channels via channel discrimination, an important information processing task.
Lu Li, Kaifeng Bu, Zi-Wen Liu
semanticscholar +1 more source
, 2015 Recently, a large number of protocols for bidirectional controlled state teleportation (BCST) have been proposed using $n$-qubit entangled states ($n\in\{5,6,7\}$) as quantum channel.
Pathak, Anirban +2 more
core +1 more source
Capacities of Quantum Amplifier Channels [PDF]
, 2017 Quantum amplifier channels are at the core of several physical processes. Not only do they model the optical process of spontaneous parametric down-conversion, but the transformation corresponding to an amplifier channel also describes the physics of the
Qi, Haoyu, Wilde, Mark M.
core +3 more sources
Tuning quantum channels to maximize polarization entanglement for telecom photon pairs [PDF]
npj Quantum Information, 2018 Quantum networks entangle remote nodes by distributing quantum states, which inevitably suffer from decoherence while traversing quantum channels. Pertinent decoherence mechanisms govern the reach, quality, and rate of distributed entanglement.
Daniel E. Jones, B. Kirby, M. Brodsky
semanticscholar +1 more source
Quantum Information Transmission Over a Partially Degradable Channel
IEEE Access, 2014 We investigate a quantum coding for quantum communication over a partially degradable (PD) quantum channel. For a PD channel, the degraded environment state can be expressed from the channel output state up to a degrading map.
Laszlo Gyongyosi
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