Results 1 to 10 of about 155,069 (29)

Circuits de microones amb línies de transmissió [PDF]

, 1993
El llibre proposa una introducció a les microones sense recórrer a l'anàlisi electromagnètica. Comença per les línies de transmissió, la carta de Smith i les seves aplicacions, i continua per la descripció de circuits de microones mitjançant els paràmetres de dispersió (scattering), inversors d'impedàncies, atenuadors, filtres, divisors i combinadors ...
Francisco Javier Bará Temes
  +6 more sources

Circuit Extraction for ZX-diagrams can be #P-hard [PDF]

Proceedings ICALP 2022. pp. 119:1--119:19, 2022
The ZX-calculus is a graphical language for reasoning about quantum computation using ZX-diagrams, a certain flexible generalisation of quantum circuits that can be used to represent linear maps from $m$ to $n$ qubits for any $m,n \geq 0$. Some applications for the ZX-calculus, such as quantum circuit optimisation and synthesis, rely on being able to ...
arxiv   +1 more source

Robust and Resource-Efficient Quantum Circuit Approximation [PDF]

arXiv, 2021
We present QEst, a procedure to systematically generate approximations for quantum circuits to reduce their CNOT gate count. Our approach employs circuit partitioning for scalability with procedures to 1) reduce circuit length using approximate synthesis, 2) improve fidelity by running circuits that represent key samples in the approximation space, and
arxiv  

Data-driven Modified Nodal Analysis Circuit Solver [PDF]

arXiv, 2023
This work introduces a novel data-driven modified nodal analysis (MNA) circuit solver. The solver is capable of handling circuit problems featuring elements for which solely measurement data are available. Rather than utilizing hard-coded phenomenological model representations, the data-driven MNA solver reformulates the circuit problem such that the ...
arxiv  

Powerful Quantum Circuit Resizing with Resource Efficient Synthesis [PDF]

arXiv, 2023
In the noisy intermediate-scale quantum era, mid-circuit measurement and reset operations facilitate novel circuit optimization strategies by reducing a circuit's qubit count in a method called resizing. This paper introduces two such algorithms. The first one leverages gate-dependency rules to reduce qubit count by 61.6% or 45.3% when optimizing depth
arxiv  

An Algebraic Quantum Circuit Compression Algorithm for Hamiltonian Simulation [PDF]

, 2021
Quantum computing is a promising technology that harnesses the peculiarities of quantum mechanics to deliver computational speedups for some problems that are intractable to solve on a classical computer. Current generation noisy intermediate-scale quantum (NISQ) computers are severely limited in terms of chip size and error rates.
arxiv   +1 more source

Modular Cluster Circuits for the Variational Quantum Eigensolver [PDF]

arXiv, 2023
The variational quantum eigensolver (VQE) algorithm recently became a popular method to compute quantum chemical properties of molecules on noisy intermediate scale quantum (NISQ) devices. In order to avoid noise accumulation from the NISQ device in the circuit, it is important to keep the so-called quantum depth of the circuit at a minimum, defined as
arxiv  

AND and/or OR: Uniform Polynomial-Size Circuits [PDF]

EPTCS 128, 2013, pp. 150-166, 2012
We investigate the complexity of uniform OR circuits and AND circuits of polynomial-size and depth. As their name suggests, OR circuits have OR gates as their computation gates, as well as the usual input, output and constant (0/1) gates. As is the norm for Boolean circuits, our circuits have multiple sink gates, which implies that an OR circuit ...
arxiv   +1 more source

Integrated coherent matter wave circuits [PDF]

New Journal of Physics 17, 092002 (2015), 2014
An integrated coherent matter wave circuit is a single device, analogous to an integrated optical circuit, in which coherent de Broglie waves are created and then launched into waveguides where they can be switched, divided, recombined, and detected as they propagate.
arxiv   +1 more source

A Structural Analysis of Field/Circuit Coupled Problems Based on a Generalised Circuit Element [PDF]

Numer. Algor. (2019), 2018
In some applications there arises the need of a spatially distributed description of a physical quantity inside a device coupled to a circuit. Then, the in-space discretised system of partial differential equations is coupled to the system of equations describing the circuit (Modified Nodal Analysis) which yields a system of Differential Algebraic ...
arxiv   +1 more source