Results 71 to 80 of about 6,569,328 (328)

Direct Characterization of Quantum Dynamics

open access: yes, 2007
The characterization of quantum dynamics is a fundamental and central task in quantum mechanics. This task is typically addressed by quantum process tomography (QPT).
D. A. Lidar, M. Mohseni, M. A. Nielsen
core   +1 more source

Good Quantum Convolutional Error Correction Codes And Their Decoding Algorithm Exist [PDF]

open access: yes, 1998
Quantum convolutional code was introduced recently as an alternative way to protect vital quantum information. To complete the analysis of quantum convolutional code, I report a way to decode certain quantum convolutional codes based on the classical ...
A. Dholakia   +30 more
core   +2 more sources

Quantum Robot: Structure, Algorithms and Applications

open access: yes, 2005
A kind of brand-new robot, quantum robot, is proposed through fusing quantum theory with robot technology. Quantum robot is essentially a complex quantum system and it is generally composed of three fundamental parts: MQCU (multi quantum computing units),
Chen, Chun-Lin   +3 more
core   +1 more source

Quantum algorithm for nonhomogeneous linear partial differential equations [PDF]

open access: yesPhysical Review A, 2018
We describe a quantum algorithm for preparing states that encode solutions of non-homogeneous linear partial differential equations. The algorithm is a continuous-variable version of matrix inversion: it efficiently inverts differential operators that ...
J. M. Arrazola   +3 more
semanticscholar   +1 more source

Harnessing the power of quantum systems based on spin magnetic resonance: from ensembles to single spins

open access: yesAdvances in Physics: X, 2017
Quantum computation provides great speedup over its classical counterpart for certain tasks. Spin system is one of the most important candidates to realize quantum computations.
Xing Rong   +7 more
doaj   +1 more source

Quantum Modular Multiplication

open access: yesIEEE Access, 2020
Quantum modular multiplication circuit is one of the basic quantum computation circuits which are basic functions in quantum algorithms. However, since quantum-quantum modular multipliers require a high cost reversible modular inversion routine for ...
Seong-Min Cho   +4 more
doaj   +1 more source

Can quantum chaos enhance stability of quantum computation? [PDF]

open access: yes, 2001
We consider stability of a general quantum algorithm with respect to a fixed but unknown residual interaction between qubits, and show a surprising fact, namely that the average fidelity of quantum computation increases by decreasing average time ...
Benenti G   +18 more
core   +2 more sources

Quantum Algorithm for Linear Differential Equations with Exponentially Improved Dependence on Precision [PDF]

open access: yesCommunications in Mathematical Physics, 2017
We present a quantum algorithm for systems of (possibly inhomogeneous) linear ordinary differential equations with constant coefficients. The algorithm produces a quantum state that is proportional to the solution at a desired final time.
D. Berry   +3 more
semanticscholar   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Learning the quantum algorithm for state overlap [PDF]

open access: yesNew Journal of Physics, 2018
Short-depth algorithms are crucial for reducing computational error on near-term quantum computers, for which decoherence and gate infidelity remain important issues. Here we present a machine-learning approach for discovering such algorithms.
L. Cincio   +3 more
semanticscholar   +1 more source

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