Results 51 to 60 of about 2,313,857 (309)
Universal quantum computation based on nanoelectromechanical systems
Physical Review Research, 2023 We propose to use a buckled plate as a qubit, where a double-well potential is mechanically produced by pushing the plate from both sides. The right and left positions of the plate are assigned to be quantum states |0〉 and |1〉.
Motohiko Ezawa +4 more
doaj +1 more source
arXiv, 2021 Efficient decompositions of multi-qubit gates are essential in NISQ applications, where the number of gates or the circuit depth is limited. This paper presents efficient decompositions of CCZ and CCCZ gates, typical multi-qubit gates, under several qubit connectivities.
arxiv
Impact of decoherence on the fidelity of quantum gates leaving the computational subspace [PDF]
QuantumThe fidelity of quantum operations is often limited by incoherent errors, which typically can be modeled by fundamental Markovian noise processes such as amplitude damping and dephasing. In Phys. Rev. Lett.
Tahereh Abad +3 more
doaj +1 more source
Demonstration of robust quantum gate tomography via randomized benchmarking [PDF]
, 2015 Typical quantum gate tomography protocols struggle with a self-consistency problem: the gate operation cannot be reconstructed without knowledge of the initial state and final measurement, but such knowledge cannot be obtained without well-characterized ...
Blake R. Johnson +5 more
semanticscholar +1 more source
Demystifying Quantum Gate Fidelity for Electronics Engineers
Applied SciencesThe implementation of quantum gates by means of microwave cryo-RFICs controlling qubits is a promising path toward scalable quantum processors. Quantum gate fidelity quantifies how well an actual quantum gate produces a quantum state close to the desired
Mattia Borgarino, Alessandro Badiali
doaj +1 more source
Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking [PDF]
Journal of Physics: Condensed Matter, 2014 Building upon the demonstration of coherent control and single-shot readout of the electron and nuclear spins of individual 31P atoms in silicon, we present here a systematic experimental estimate of quantum gate fidelities using randomized benchmarking ...
J. Muhonen +11 more
semanticscholar +1 more source
High-fidelity entangling gate for double-quantum-dot spin qubits [PDF]
npj Quantum Information, 2016 Electron spins in semiconductors are promising qubits because their long coherence times enable nearly 109 coherent quantum gate operations. However, developing a scalable high-fidelity two-qubit gate remains challenging.
J. Nichol +6 more
semanticscholar +2 more sources
Quantum circuits with uniformly controlled one-qubit gates [PDF]
Phys. Rev. A 71, 052330 (2005), 2004 Uniformly controlled one-qubit gates are quantum gates which can be represented as direct sums of two-dimensional unitary operators acting on a single qubit. We present a quantum gate array which implements any n-qubit gate of this type using at most 2^{n-1} - 1 controlled-NOT gates, 2^{n-1} one-qubit gates and a single diagonal n-qubit gate.
arxiv +1 more source
Advanced Functional Materials, EarlyView.This work investigates modifying interfacial contacts in realizing giant‐performance semiconductor nanomembrane optoelectronics. Strategies, including surface reaction and buffer layer work‐function modulation, are explored to boost the Schottky barrier. An emerging material of YbOx is utilized for near‐ideal Ohmic contact.
Yibo Zhang +5 more
wiley +1 more source
On construction of quantum logical gate based on ESR
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013 A quantum computer is a computation device operated by means of quantum mechanical phenomena. There are many candidates that are being pursued for physically implementing the quantum computer.The quantum logical gate based on the electron spin resonance (
Kenichiro Mayuzumi +2 more
doaj +1 more source