Results 111 to 120 of about 2,130,806 (337)

Quantum-classical tradeoffs and multi-controlled quantum gate decompositions in variational algorithms [PDF]

open access: yesQuantum
The computational capabilities of near-term quantum computers are limited by the noisy execution of gate operations and a limited number of physical qubits. Hybrid variational algorithms are well-suited to near-term quantum devices because they allow for
Teague Tomesh   +3 more
doaj   +1 more source

A heralded quantum gate between remote quantum memories

open access: yes, 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 ...
C. Monroe   +6 more
core   +1 more source

High‐Yield Synthesis of Fe‐NC Electrocatalysts Using Mg2+ Templating and Schiff‐Base Porous Organic Polymers

open access: yesAdvanced Functional Materials, EarlyView.
Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange   +11 more
wiley   +1 more source

Fast, Robust, and Laser-Free Universal Entangling Gates for Trapped-Ion Quantum Computing

open access: yesPhysical Review X
A novel two-qubit entangling gate for trapped-ion quantum processors is proposed theoretically and demonstrated experimentally. During the gate, double-dressed quantum states are created by applying a phase-modulated continuous driving field.
Markus Nünnerich   +6 more
doaj   +1 more source

Simple implementation of high fidelity controlled-iswap gates and quantum circuit exponentiation of non-Hermitian gates

open access: yesPhysical Review Research, 2020
The iswap gate is an entangling swapping gate where the qubits obtain a phase of i if the state of the qubits is swapped. Here we present a simple implementation of the controlled-iswap gate. The gate can be implemented with several controls and works by
S. E. Rasmussen, N. T. Zinner
doaj   +1 more source

Loss-of-entanglement prediction of a controlled-phase gate in the framework of steepest-entropy-ascent quantum thermodynamics [PDF]

open access: green, 2020
J. A. Montañez-Barrera   +3 more
openalex   +1 more source

Quantum dot-based high-fidelity universal quantum gates in noisy environment [PDF]

open access: green, 2021
Yash Tiwari   +2 more
openalex   +1 more source

A Van der Waals Optoelectronic Synapse with Tunable Positive and Negative Post‐Synaptic Current for Highly Accurate Spiking Neural Networks

open access: yesAdvanced Functional Materials, EarlyView.
A van der Waals optoelectronic synaptic device based on a ReS2/WSe2 heterostructure and oxygen‐treated h‐BN is presented, which enables both positive and negative PSCs through photocarrier polarity reversal. Bidirectional plasticity arises from gate‐tunable band bending and charge trapping‐induced quasi‐doping.
Hyejin Yoon   +9 more
wiley   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Universal Dephasing Control During Quantum Computation

open access: yes, 2007
Dephasing is a ubiquitous phenomenon that leads to the loss of coherence in quantum systems and the corruption of quantum information. We present a universal dynamical control approach to combat dephasing during all stages of quantum computation, namely,
C. Ramanathan   +4 more
core   +1 more source

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