搜索结果: 1-15 共查到“声学 quantum”相关记录19条 . 查询时间(0.145 秒)
Phonon-assisted transport through suspended carbon nanotube quantum dots
Phonon-assisted transport suspended carbon nanotube quantum dots
2014/5/28
Motivated by several recent experiments, we investigate phonon-assisted electronic transport through suspended carbon nanotube quantum dots including electron-electron, electron-phonon, and spin-orbit...
The Kondo crossover in shot noise of a single quantum dot with orbital degeneracy
Kondo crossover orbital degeneracy
2010/11/19
We investigate out of equilibrium transport through an orbital Kondo system realized in a single quantum dot, described by the multiorbital impurity Anderson model. Shot noise and current are calculat...
Spinon Phonon Interaction and Ultrasonic Attenuation in Quantum Spin Liquids
Spinon Phonon Interaction Ultrasonic Attenuation Quantum Spin Liquids
2010/11/25
Several experimental candidates for quantum spin liquids have been discovered in the past few
years which appear to support gapless fermionic S = 1 2 excitations called spinons. The spinons may form ...
Phonon-assisted decoherence and tunneling in quantum dot molecules
quantum dot phonon decoherence tunneling
2010/11/22
We study the influence of the phonon environment on the electron dynamics in a doped quantum dot molecule.A non-perturbative quantumkinetic theory based on correlation expansion is used in order to de...
Enhanced sequential carrier capture into individual quantum dots and quantum posts controlled by surface acoustic waves
Quantum Dots Quantum Posts Surface Acoustic Waves
2010/11/24
Individual self-assembled Quantum Dots and Quantum Posts are studied under the in uence of
a surface acoustic wave. In optical experiments we observe an acoustically induced switching of the occupanc...
Two-mode Correlation of Microwave Quantum Noise Generated by Parametric Down-Conversion
Two-mode Correlation of Microwave Quantum Noise Parametric Down-Conversion
2010/11/24
In this letter, we report the observation of the correlation between two modes of microwave
radiation resulting from the ampli cation of quantum noise by the Josephson Parametric Converter.This proce...
Reduction of quantum noise in optical interferometers using squeezed light
Reduction quantum noise optical interferometers squeezed light
2010/11/8
We study the photon counting noise in optical interferometers used for gravitational wave detection. In order to reduce quantum noise a squeezed vacuum state is injected into the usually unused input ...
Efficient entanglement distribution for quantum communication against collective noise
Efficient entanglement distribution quantum communication against collective noise
2010/10/29
We present an efficient faithful entanglement distribution scheme for quantum communication against collective noise. Its setup is composed of polarizing beam splitters, half wave plates, polarization...
Quantum capacity under adversarial quantum noise: arbitrarily varying quantum channels
Quantum capacity adversarial quantum noise arbitrarily varying quantum channels
2010/10/29
We investigate entanglement transmission over an unknown channel in the presence of a third party (called the adversary), which is enabled to choose the channel from a given set of memoryless but non...
Do revivals of quantum correlations necessarily require quantum noise?
revivals quantum correlations necessarily quantum noise
2010/10/21
We show that in an N-partite system, where each subsystem is subject to a local completely
positive map, total correlations cannot, at later times, exceed their initial value. We then analyze the dyn...
Robust randomized benchmarking of quantum processes
Robust randomized benchmarking quantum processes
2010/10/20
In this Letter we describe a simple randomized benchmarking protocol for quantum information
processors and obtain a sequence of models for the observable delity decay as a function of a
perturbati...
We consider the problem of improving noisy quantum measurements by suitable preprocessing
strategies making many noisy detectors equivalent to a single ideal detector. For observables per-taining to ...
Security of quantum key distribution with state-dependent imperfections
quantum key distribution state-dependent imperfection security
2010/10/18
In practical quantum key distribution (QKD) system, the state prepara-tion and measurement are imperfect comparing with the ideal BB84 proto-col, which are always state-dependent in practical realizat...
Quantum noise and self-sustained radiation of PT-symmetric systems
Quantum noise self-sustained radiation PT-symmetric systems
2010/3/10
The observation that PT-symmetric Hamiltonians can have real-valued energy levels even if they are non-hermitian has triggered intense activities, with experiments in particular focusing on optical sy...
Quantum Fluctuations Contribution to the Random Walk of a Single Molecule and New Estimate of the Planck Constant
Quantum Fluctuations Random Walk Planck Constant
2010/3/10
It is shown, by considering the case of the harmonic oscillator, that quantum fluctuations may be the most significant contribution to the random walk of a single molecule. From this point, the contro...