Results 61 to 70 of about 2,063,385 (366)

Universal quantum circuit for n-qubit quantum gate: a programmable quantum gate

Quantum Information and Computation, 2007
Quantum computation has attracted much attention, among other things, due to its potentialities to solve classical NP problems in polynomial time. For this reason, there has been a growing interest to build a quantum computer. One of the basic steps is to implement the quantum circuit able to realize a given unitary operation. This task has been solved
Sousa, P. B. M., Ramos, R. V.
openaire   +2 more sources

Simulating chemistry efficiently on fault-tolerant quantum computers [PDF]

, 2012
Quantum computers can in principle simulate quantum physics exponentially faster than their classical counterparts, but some technical hurdles remain. Here we consider methods to make proposed chemical simulation algorithms computationally fast on fault ...
, Alán Aspuru-Guzik, Cuccaro S A Draper T G Kutin S A Moulton D P, Dawson C M, Devitt S J Nemoto K Munro W J, Draper T G, Draper T G, Fowler A G, Gordon M S, Grover L Rudolph T, Helgaker T, Isailovic N Whitney M Patel Y Kubiatowicz J, James D Whitfield, Kitaev A Yu, Kitaev A Yu, Man-Hong Yung, N Cody Jones, Nielsen M A, Peter L McMahon, Preskill J, Rodney Van Meter, Wiebe N, Yoshihisa Yamamoto   +22 more
core   +2 more sources

Path-Independent Quantum Gates with Noisy Ancilla. [PDF]

Physical Review Letters, 2019
Ancilla systems are often indispensable to universal control of a nearly isolated quantum system. However, ancilla systems are typically more vulnerable to environmental noise, which limits the performance of such ancilla-assisted quantum control.
Wen-Long Ma, Mengzhen Zhang, Yat Wong, Kyungjoo Noh, Serge Rosenblum, P. Reinhold, R. Schoelkopf, Liang Jiang   +7 more
semanticscholar   +1 more source

Implementation of Grover’s Algorithm & Bernstein-Vazirani Algorithm with IBM Qiskit

Journal of Informatics and Web Engineering
Quantum logic gates differ from classical logic gates as the former involves quantum operators. The conventional gates such as AND, OR, NOT etc., are generally classified as classical gates, however, some of the quantum gates are known as Pauli gates ...
Yang-Che Liu, Mei-Feng Liu
doaj   +1 more source

Designing of Reversible Functions in Classical and Quantum Domains [PDF]

International Journal of Electronics and Telecommunications
First sections of the paper contain some considerations relevant to the reversibility of quantum gates. The Solovay-Kitayev theorem shows that using proper set of quantum gates one can build a quantum version of the nondeterministic Turing machine.
Andrzej Skorupski, Ryszard Romaniuk
doaj   +1 more source

Plug-and-Play Approach to Nonadiabatic Geometric Quantum Gates. [PDF]

Physical Review Letters, 2018
Nonadiabatic holonomic quantum computation (NHQC) has been developed to shorten the construction times of geometric quantum gates. However, previous NHQC gates require the driving Hamiltonian to satisfy a set of rather restrictive conditions, reducing ...
Bao-Jie Liu, Xue-ke Song, Z. Xue, Xin Wang, M. Yung   +4 more
semanticscholar   +1 more source

Efficient Decomposition of Quantum Gates [PDF]

Physical Review Letters, 2004
Optimal implementation of quantum gates is crucial for designing a quantum computer. We consider the matrix representation of an arbitrary multiqubit gate. By ordering the basis vectors using the Gray code, we construct the quantum circuit which is optimal in the sense of fully controlled single-qubit gates and yet is equivalent with the multiqubit ...
Vartiainen, Juha J., Mottonen, Mikko, Salomaa, Martti M.   +2 more
openaire   +3 more sources

Electric circuits for universal quantum gates and quantum Fourier transformation

Physical Review Research, 2020
A set of universal quantum gates can be constructed based on quantum walk by formulating it as a scattering problem on a graph. In this paper, we simulate quantum gates by electric circuits, following a recent report that a one-dimensional LC electric ...
Motohiko Ezawa
doaj   +1 more source

Realizing multi-qubit controlled nonadiabatic holonomic gates with connecting systems

AAPPS Bulletin, 2022
Multi-qubit controlled gates are frequently used in quantum information processing. Although they can be built with gates from the universal set of one- and two-qubit gates, this procedure typically becomes very demanding as the number of such gates ...
G. F. Xu, D. M. Tong
doaj   +1 more source

Heralded Quantum Gate between Remote Quantum Memories [PDF]

Physical Review Letters, 2009
We demonstrate a probabilistic entangling quantum gate between two distant trapped ytterbium ions. The gate is implemented between the hyperfine "clock" state atomic qubits and mediated by the interference of two emitted photons carrying frequency encoded qubits.
Maunz, P., Olmschenk, S., Hayes, D., Matsukevich, D. N., Duan, L. -M., Monroe, C.   +5 more
openaire   +3 more sources