搜索结果: 1-14 共查到“无线电物理 Quantum well”相关记录14条 . 查询时间(0.232 秒)
Formula predicts effects of noise on quantum information（图）
公式预测 噪声 量子信息
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2023/5/17
Researchers from Cornell Engineering and the University of Amsterdam have derived a formula that predicts the effects of environmental noise on quantum information – an advancement crucial for designi...
Scientists boost quantum signals while reducing noise（图）
降低噪声 量子信号 量子系统 量子测量
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2023/6/9
A certain amount of noise is inherent in any quantum system. For instance, when researchers want to read information from a quantum computer, which harnesses quantum mechanical phenomena to solve cert...
New quantum computing architecture could be used to connect large-scale devices（图）
量子计算架构 大型设备 定向光子发射 量子互连
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2023/6/9
Quantum computers hold the promise of performing certain tasks that are intractable even on the world’s most powerful supercomputers. In the future, scientists anticipate using quantum computing to em...
Random Oracles in a Quantum World
Quantum World Random Oracles
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2015/8/5
The interest in post-quantum cryptography --- classical systems that remain secure in the presence of a quantum adversary --- has generated elegant proposals for new cryptosystems. Some of these syste...
Development in the Scattering Matrix Theory: From Spin-Orbit-Coupling Affected Shot Noise to Quantum Pumping
Scattering Matrix Theory Spin-Orbit-Coupling Affected Shot Noise Quantum Pumping
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2010/11/23
The review chapter starts by a pedagogical introduction to the general concept of the scattering theory: from the fundamental wave-function picture to the second-quantization language, with the aim to...
Quantum singular operator limits of thin Dirichlet tubes via $\Gamma$-convergence
Quantum singular operator limits thin Dirichlet tubes $\Gamma$-convergence
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2010/11/11
The $\Gamma$-convergence of lower bounded quadratic forms is used to study the singular operator limit of thin tubes (i.e., the vanishing of the cross section diameter) of the Laplace operator with Di...
Does Adiabatic Quantum Optimization Truly Fail for NP-complete problems?
Adiabatic Quantum Optimization Truly Fail NP-complete problems
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2010/10/29
It has been recently argued that adiabatic quantum optimization would fail in solving NP-complete problems because of the occurrence of exponentially small gaps due to crossing of local minima of the ...
Nonlinear Landau-Zener tunneling in quantum phase space
Nonlinear tunneling quantum phase space
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2010/10/29
We present a detailed analysis of the Landau-Zener problem for an interacting Bose-Einstein condensate in a time-varying double-well trap, especially focussing on the relation between the full many-p...
Passive sources for the Bennett-Brassard 1984 quantum key distribution protocol with practical signals
Passive sources Bennett-Brassard 1984 quantum key distribution protocol practical signals
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2010/10/20
Most experimental realizations of quantum key distribution are based on the Bennett-Brassard
1984 (so-called BB84) protocol. In a typical optical implementation of this scheme, the sender
uses an ac...
Independent Attacks in Imperfect Settings; A Case for A Two Way Quantum Key Distribution Scheme
Independent Attacks Imperfect Settings A Case Quantum Key Distribution Scheme
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2010/10/20
We review the study on a two way quantum key distribution protocol given imperfect settings
through a simple analysis of a toy model and show that it can outperform a BB84 setup. We provide the suffi...
Temporal Leggett-Garg-Bell inequalities for sequential multi-time actions in quantum information processing, and a re-definition of Macroscopic Realism
Temporal Leggett-Garg-Bell inequalities sequential multi-time actions quantum information processing a re-definition Macroscopic Realism
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2010/10/19
The usual formulation of Macrorealism is recast to make this notion fully concurrent with the basic ideas behind classical physics. The assumption of non-invasiveness of measurements is dropped. Inste...
Reflection of a Particle from a Quantum Measurement
Reflection Particle Quantum Measurement
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2010/10/21
We present a generalization of continuous position measurements that accounts for a spatially inhomogeneous measurement strength. This describes many real measurement scenarios, in which the rate at w...
Noncommutative analysis and quantum physics I. Quantities, ensembles and states
axiomatization of physics Bell inequality Bohmian mechanics
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2010/10/15
In this sequence of papers, noncommutative analysis is used to give a consistent axiomatic approach to a unified conceptual foundation of classical and quantum physics, free of undefined terms.
Nondeterministic Quantum Query and Quantum Communication Complexities
quantum computing query complexity communication complexity nondeterminism
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2010/10/18
We study nondeterministic quantum algorithms for Boolean functions f. Such algorithms have positive acceptance probability on input x iff f(x) = 1. In the setting of query complexity, we show that the...