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Coherent Communication of Classical Messages [PDF]

open access: yesPhysical Review Letters, 2003
We define "coherent communication" in terms of a simple primitive, show it is equivalent to the ability to send a classical message with a unitary or isometric operation, and use it to relate other resources in quantum information theory.
Harrow, Aram W.
core   +4 more sources

Communication through coherent control of quantum channels [PDF]

open access: yesQuantum, 2020
A completely depolarising quantum channel always outputs a fully mixed state and thus cannot transmit any information. In a recent Letter\cite{ebler18}, it was however shown that if a quantum state passes through two such channels in a quantum ...
Alastair A. Abbott   +4 more
doaj   +5 more sources

Bidirectional coherent classical communication [PDF]

open access: yesQuantum Information and Computation, 2004
A unitary interaction coupling two parties enables quantum communication in both the forward and backward directions. Each communication capacity can be thought of as a tradeoff between the achievable rates of specific types of forward and backward ...
Harrow, Aram W., Leung, Debbie W.
core   +4 more sources

A New Perspective on Assessing Cognition in Children through Estimating Shared Intentionality

open access: yesJournal of Intelligence, 2022
This theoretical article aims to create a conceptual framework for future research on digital methods for assessing cognition in children through estimating shared intentionality, different from assessing through behavioral markers.
Igor Val Danilov, Sandra Mihailova
doaj   +1 more source

Joint Modulation Format Identification and OSNR Monitoring Using Cascaded Neural Network With Transfer Learning

open access: yesIEEE Photonics Journal, 2021
We propose a cascaded neural network (NN) to simultaneously identify the modulation formats and monitor the optical-signal-to-noise ratio (OSNR). In the second-level network, it is a single deep NN (DNN) rather than multiple sub-networks, which makes the
Jing Zhang   +6 more
doaj   +1 more source

High Accuracy and Low Complexity Frequency Offset Estimation Method Based on All Phase FFT for M-QAM Coherent Optical Systems

open access: yesIEEE Photonics Journal, 2022
The traditional fast Fourier transform based frequency offset estimation (FFT-FOE) estimates the frequency offset by searching the spectral peak of the signal after the fourth power operation, which is suitable for multiple modulation formats.
Qian Li   +3 more
doaj   +1 more source

Coherent optical communications using coherence-cloned Kerr soliton microcombs [PDF]

open access: yesNature Communications, 2021
Abstract Dissipative Kerr soliton microcombs have been recognized as a promising multi-wavelength laser source for fiber optical communications, as their comb lines possess frequency and phase stability far beyond the independent lasers. Especially, for coherent optical communications, a highly beneficial but rarely explored target is
Yong Geng   +8 more
openaire   +4 more sources

Flexible Phase Synchronization for Wireless Optical Coherent Communication System With Adaptive Fractionally-Spaced Blind Equalization Combined With Adaptive Kalman Filter

open access: yesIEEE Photonics Journal, 2023
Wireless optical coherent communication can be used as the backbone supporting technology of air-space-ground-sea-integrated network. In wireless optical coherent communication, the information can be demodulated from the carrier correctly only when the ...
ShuPeng Zhang, LiYing Tan, Jing Ma
doaj   +1 more source

Monolithically Integrated O-Band Coherent ROSA Featuring 2D Grating Couplers for Self-Homodyne Intra Data Center Links

open access: yesIEEE Photonics Journal, 2023
In this work, we present an O-band dual-polarization coherent receiver optical sub-assembly (cROSA), monolithically integrated in a 0.25 $\mu$m BiCMOS technology.
Pascal M. Seiler   +7 more
doaj   +1 more source

Coherent optical communications

open access: yesOptical Fiber Communication, 1985
Coherent optical communication systems became possible with development of the gas laser in the early 1960s. During the decade following development of the laser, Enloe and Rodda showed homodyne detection to be possible when they successfully phase-locked two gas lasers.
T. G. Hodgkinson   +3 more
openaire   +3 more sources

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