Results 21 to 30 of about 60,447 (254)

Geometry of mixed states for a q-bit and the quantum Fisher information tensor [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2012
After a review of the pure state case, we discuss from a geometrical point of view the meaning of the quantum Fisher metric in the case of mixed states for a two-level system, i.e. for a q-bit, by examining the structure of the fiber bundle of states, whose base space can be identified with a co-adjoint orbit of the unitary group.
ERCOLESSI, ELISA, M. Schiavina
openaire   +4 more sources

Parameter Analysis in Macro-Scale Molecular Communications Using Advection-Diffusion

open access: yesIEEE Access, 2018
Molecular communication (MC) is a method where the transmission of information involves the use of chemicals or molecules instead of electromagnetic waves.
Daniel Tunc McGuiness   +3 more
doaj   +1 more source

ZMAC+ – An Efficient Variable-output-length Variant of ZMAC

open access: yesIACR Transactions on Symmetric Cryptology, 2017
There is an ongoing trend in the symmetric-key cryptographic community to construct highly secure modes and message authentication codes based on tweakable block ciphers (TBCs).
Eik List, Mridul Nandi
doaj   +1 more source

Polar-Coded OFDM With Index Modulation

open access: yesIEEE Access, 2021
In this paper, we apply polar codes to a modified version of OFDM systems with index modulation which is called OFDM with in-phase/quadrature index modulation (OFDM-I/Q-IM).
Si-Yu Zhang, Behnam Shahrrava
doaj   +1 more source

Quantum algorithms and approximating polynomials for composed functions with shared inputs [PDF]

open access: yesQuantum, 2021
We give new quantum algorithms for evaluating composed functions whose inputs may be shared between bottom-level gates. Let $f$ be an $m$-bit Boolean function and consider an $n$-bit function $F$ obtained by applying $f$ to conjunctions of possibly ...
Mark Bun, Robin Kothari, Justin Thaler
doaj   +1 more source

Wavelets as q-bits and q-bit states as wavelets

open access: yes, 2009
In this short report it is argued that by the use of wavelets formalism it is possible to describe the q-bit state. The wavelet formalism address the real-valued physical signals, for example, obtained during typical physical measurements.
Steblinski, Pawel, Blachowicz, Tomasz
openaire   +2 more sources

An Approach to Shorten Digital Signature Length [PDF]

open access: yesComputer Science Journal of Moldova, 2006
A new method is proposed to design short signature schemes based on difficulty of factorizing a composite number n=qr, where q and r are two large primes.
Nikolay A. Moldovyan
doaj  

Novel Composite Approximation for the Gaussian Q-Function

open access: yesElektronika ir Elektrotechnika, 2020
This paper, by using Borjesson’s and Benitez’s approximation of Q-function, presents a novel and improved composite approximation of Q-function with wide applicability.
Zoran H. Peric   +4 more
doaj   +1 more source

Semiconductor nanostructures for flying q‐bits and green photonics [PDF]

open access: yesNanophotonics, 2018
Abstract Breakthroughs in nanomaterials and nanoscience enable the development of novel photonic devices and systems ranging from the automotive sector, quantum cryptography to metropolitan area and access networks. Geometrical architecture presents a design parameter of device properties.
openaire   +2 more sources

Scaling up and down of 3-D floating-point data in quantum computation

open access: yesScientific Reports, 2022
In the past few decades, quantum computation has become increasingly attractive due to its remarkable performance. Quantum image scaling is considered a common geometric transformation in quantum image processing, however, the quantum floating-point data
Meiyu Xu, Dayong Lu, Xiaoyun Sun
doaj   +1 more source

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