Results 11 to 20 of about 2,092,913 (379)
Quantum gates and circuits [PDF]
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1998 A historical review is given of the emergence of the idea of the quantum logic gate from the theory of reversible Boolean gates. I highlight the quantum XOR or controlled NOT as the fundamental two-bit gate for quantum computation. This gate plays a central role in networks for quantum error correction.
David P. DiVincenzo
openalex +5 more sources
Coupled quantum dots as quantum gates [PDF]
Physical Review B, 1999 We consider a new quantum gate mechanism based on electron spins in coupled semiconductor quantum dots. Such gates provide a general source of spin entanglement and can be used for quantum computers. We determine the exchange coupling J in the effective Heisenberg model as a function of magnetic (B) and electric fields, and of the inter-dot distance (a)
Guido Burkard +2 more
openalex +6 more sources
Model-Free Quantum Gate Design and Calibration Using Deep Reinforcement Learning [PDF]
IEEE Transactions on Artificial Intelligence, 2023 High-fidelity quantum gate design is important for various quantum technologies, such as quantum computation and quantum communication. Numerous control policies for quantum gate design have been proposed given a dynamical model of the quantum system of ...
Omar Shindi +3 more
semanticscholar +1 more source
Sensitivity of quantum gate fidelity to laser phase and intensity noise [PDF]
Physical Review A, 2022 The fidelity of gate operations on neutral atom qubits is often limited by fluctuations of the laser drive. Here, we quantify the sensitivity of quantum gate fidelities to laser phase and intensity noise.
X. Jiang +3 more
semanticscholar +1 more source
Modeling semiconductor spin qubits and their charge noise environment for quantum gate fidelity estimation [PDF]
Physical review B, 2022 The spin of an electron confined in semiconductor quantum dots is currently a promising candidate for quantum bit (qubit) implementations. Taking advantage of existing CMOS integration technologies, such devices can offer a platform for large scale ...
M.Mohamed El +10 more
semanticscholar +1 more source
Approaching the theoretical limit in quantum gate decomposition [PDF]
Quantum, 2021 In this work we propose a novel numerical approach to decompose general quantum programs in terms of single- and two-qubit quantum gates with a CNOT gate count very close to the current theoretical lower bounds.
P. Rakyta, Z. Zimbor'as
semanticscholar +1 more source
Computationally efficient zero-noise extrapolation for quantum-gate-error mitigation [PDF]
Physical Review A, 2021 Zero noise extrapolation (ZNE) is a widely used technique for gate error mitigation on near term quantum computers because it can be implemented in software and does not require knowledge of the quantum computer noise parameters. Traditional ZNE requires
V. Pascuzzi +4 more
semanticscholar +1 more source
Transverse Mode-Encoded Quantum Gate on a Silicon Photonic Chip. [PDF]
Physical Review Letters, 2021 As an important degree of freedom (d.o.f.) in photonic integrated circuits, the orthogonal transverse mode provides a promising and flexible way to increase communication capability, for both classical and quantum information processing.
Lantian Feng +12 more
semanticscholar +1 more source
ACM Transactions on Quantum Computing, 2023 We extend the circuit model of quantum computation so that the wiring between gates is soft-coded within registers inside the gates. The addresses in these registers can be manipulated and put into superpositions. This aims at capturing indefinite causal orders and making their geometrical layout explicit: we express the quantum switch and the ...
Pablo Arrighi +4 more
openaire +4 more sources
Adaptive Problem Solving Dynamics in Gate-Model Quantum Computers
Entropy, 2022 Gate-model quantum computer architectures represent an implementable model used to realize quantum computations. The mathematical description of the dynamical attributes of adaptive problem solving and iterative objective function evaluation in a gate ...
Laszlo Gyongyosi
doaj +1 more source