Results 11 to 20 of about 12,091 (250)

Simulation of Closed Timelike Curves in a Darwinian Approach to Quantum Mechanics

open access: yesUniverse, 2023
Closed timelike curves (CTCs) are non-intuitive theoretical solutions of general relativity field equations. The main paradox associated with the physical existence of CTCs, the so-called grandfather paradox, can be satisfactorily solved by a quantum ...
Carlos Baladrón, Andrei Khrennikov
doaj   +1 more source

Stabilizer formalism for generalized concatenated quantum codes [PDF]

open access: yes2013 IEEE International Symposium on Information Theory, 2013
The concept of generalized concatenated quantum codes (GCQC) provides a systematic way for constructing good quantum codes from short component codes. We introduce a stabilizer formalism for GCQCs, which is achieved by defining quantum coset codes. This formalism offers a new perspective for GCQCs and enables us to derive a lower bound on the code ...
Yun-Jiang Wang   +3 more
openaire   +2 more sources

Generalized Perfect Codes for Symmetric Classical-Quantum Channels

open access: yesIEEE Transactions on Information Theory, 2022
We define a new family of codes for symmetric classical-quantum channels and establish their optimality. To this end, we extend the classical notion of generalized perfect and quasi-perfect codes to channels defined over some finite dimensional complex Hilbert output space.
Andreu Blasco Coll   +2 more
openaire   +5 more sources

Entanglement-assisted quantum MDS codes from generalized Reed–Solomon codes [PDF]

open access: yesQuantum Information Processing, 2021
In this paper, we produce some new classes of entanglement-assisted quantum MDS codes(EAQMDS codes for short) via generalized Reed-Solomon codes over finite fields of odd characteristic. Among our constructions, there are many EAQMDS codes with new lengths which have never been reported.
Renjie Jin, Yiran Cao, Jinquan Luo
openaire   +2 more sources

Simulating the photon statistics of multimode Gaussian states by automatic differentiation of generating functions

open access: yesAPL 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
doaj   +1 more source

Advantage of the Key Relay Protocol Over Secure Network Coding

open access: yesIEEE 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
doaj   +1 more source

Auditing the ‘Social’ of Quantum Technologies: A Scoping Review

open access: yesSocieties, 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
doaj   +1 more source

Zero-Error Coding via Classical and Quantum Channels in Sensor Networks

open access: yesSensors, 2019
Today’s sensor networks need robustness, security and efficiency with a high level of assurance. Error correction is an effective communicational technique that plays a critical role in maintaining robustness in informational transmission.
Wenbin Yu   +6 more
doaj   +1 more source

Quantum convolutional coding with shared entanglement: general structure [PDF]

open access: yesQuantum Information Processing, 2010
We present a general theory of entanglement-assisted quantum convolutional coding. The codes have a convolutional or memory structure, they assume that the sender and receiver share noiseless entanglement prior to quantum communication, and they are not restricted to possess the Calderbank-Shor-Steane structure as in previous work.
Mark M. Wilde, Todd A. Brun
openaire   +2 more sources

Symbolic model checking quantum circuits in Maude [PDF]

open access: yesPeerJ Computer Science
This article presents a symbolic approach to model checking quantum circuits using a set of laws from quantum mechanics and basic matrix operations with Dirac notation.
Canh Minh Do, Kazuhiro Ogata
doaj   +2 more sources

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