Results 41 to 50 of about 399,748 (340)
Witnessing effective entanglement over a 2km fiber channel [PDF]
, 2010 We present a fiber-based continuous-variable quantum key distribution system. In the scheme, a quantum signal of two non-orthogonal weak optical coherent states is sent through a fiber-based quantum channel. The receiver simultaneously measures conjugate
Bennett +42 more
core +1 more source
Increasing the Protocol Gain of Quantum Cryptography [PDF]
Engineering and Technology Journal, 2013 Quantum cryptography is a technique to distribute a sequence of truly random and unconditionally secure bits over a secure communication by applying the phenomena of quantum physics.
Firas Ali Sabir Al-Juboori +2 more
doaj +1 more source
Strong converse rates for quantum communication [PDF]
, 2015 We revisit a fundamental open problem in quantum information theory, namely whether it is possible to transmit quantum information at a rate exceeding the channel capacity if we allow for a non-vanishing probability of decoding error.
Tomamichel, Marco +2 more
core +4 more sources
Quantum channel marginal problem
Physical Review Research, 2022 Given a set of local dynamics, are they compatible with a global dynamics? We systematically formulate these questions as quantum channel marginal problems. These problems are strongly connected to the generalization of the no-signaling conditions to quantized inputs and outputs and can be understood as a general toolkit to study notions of quantum ...
Hsieh, Chung-Yun +2 more
openaire +5 more sources
, 2020 We derive universal codes for transmission of broadcast and confidential messages over classical-quantum-quantum and fully quantum channels. These codes are robust to channel uncertainties considered in the compound model.
Boche, Holger +2 more
core +1 more source
Entanglement-assisted communication of classical and quantum information [PDF]
, 2010 We consider the problem of transmitting classical and quantum information reliably over an entanglement-assisted quantum channel. Our main result is a capacity theorem that gives a three-dimensional achievable rate region.
Hsieh, Min-Hsiu, Wilde, Mark M.
core +3 more sources
Quantum Information Processing, 2021 The reliability of quantum channels for transmitting information is of profound importance from the perspective of quantum information. This naturally leads to the question as how well a quantum state is preserved when subjected to a quantum channel. We propose a measure of quantumness of channels based on non-commutativity of quantum states that is ...
Javid Naikoo +2 more
openaire +2 more sources
Quantum Biological Channel Modeling and Capacity Calculation
Life, 2012 Quantum mechanics has an important role in photosynthesis, magnetoreception, and evolution. There were many attempts in an effort to explain the structure of genetic code and transfer of information from DNA to protein by using the concepts of quantum ...
Ivan B. Djordjevic
doaj +1 more source
Zero-error Coding Method Based on Quantum Five-symbol Confusion Channel Model [PDF]
Jisuanji gongcheng, 2018 In view of the lack of effective coding schemes for quantum zero-error channel,based on the characteristics of quantum five-symbol confusion channel model and the theory of matrix theory,a coding method of five-symbol confusion channel combining quantum ...
LI Jingya,YU Wenbin,LIU Wenjie,WANG Jinwei
doaj +1 more source
Describing a Quantum Channel by State Tomography of a Single Probe State
, 2009 A general law is presented for (composite) quantum systems which directly describes the time evolution of quantum states (with one or both components) through an arbitrary noisy quantum channel.
Song, He-shan, Yu, Chang-shui
core +1 more source