搜索结果: 1-15 共查到“物理学 Decoherence”相关记录68条 . 查询时间(0.073 秒)
Spin bath-mediated decoherence in superconductors
Squid tunnel paramagnetic nuclear spin electronic excited state isotope purification
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2014/12/22
We consider a SQUID tunneling between 2 nearly degenerate flux states. Decoherence caused by paramagnetic and nuclear spins in the low-T limit is shown to be much stronger than that from electronic ex...
Decoherence and quantum walks: Anomalous diffusion and ballistic tails
Strong coupling density matrix particles lattice
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2014/12/20
The common perception is that strong coupling to the environment will always render the evolution of the system density matrix quasiclassical (in fact, diffusive) in the long time limit. We present he...
Interplay between coherence and decoherence in LHCII photosynthetic complex
LHCII photosynthetic complex
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2011/9/13
This paper investigates the dynamics of excitonic transport in photocomplex LHCII, the primary component of the photosynthetic apparatus in green plants. The dynamics exhibits a strong interplay betwe...
Immunity of information encoded in decoherence-free subspaces to particle loss
information decoherence-free subspaces particle loss
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2011/8/17
Abstract: We demonstrate that for an ensemble of qudits, subjected to collective decoherence in the form of perfectly correlated random SU(d) unitaries, quantum superpositions stored in the decoherenc...
Color Decoherence in In-Medium QCD Cascades
Color Decoherence In-Medium QCD Cascades
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2011/1/6
The talk, based on [1], analyzes the consequences of the assumption that the effects of quantum coherence and the resulting angular ordering in QCD cascades are disrupted within the hot fireball creat...
Decoherence in a Double-Dot Aharonov-Bohm Interferometer
Decoherence Double-Dot Aharonov-Bohm Interferometer
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2010/11/23
Coherence in electronic interferometers is typically believed to be restored fully in the limit of small voltages, frequencies and temperatures. However, it is crucial to check this essentially pertur...
Designing reservoirs for 1/t decoherence of a qubit
reservoirs decoherence Quantum Physics
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2010/11/8
Anomalous decoherence in the Jaynes-Cummings model emerges for a certain class of bosonic reservoirs, described by spectral densities with a band edge frequency coinciding with the qubit transition fr...
Comparison of analytical and numerical methods and the effect of bath coupling on the quantum decoherence
comparison analytical and numerical methods quantum decoherence
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2010/11/8
The dynamics of a qubit in a structured environment is investigated theoretically. One point of view of the model is the spin-boson model with a Lorentz shaped spectral density. An alternative view is...
A reservoir for inverse power law decoherence of a qubit
Quantum Physics
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2010/11/8
The exact dynamics of a Jaynes-Cummings model for a qubit interacting with a continuous distribution of bosons, characterized by a special form of the spectral density, is evaluated analytically. The ...
Weak localization, Aharonov-Bohm oscillations and decoherence in arrays of quantum dots
Weak localization Aharonov-Bohm oscillations decoherence
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2010/11/24
Combining scattering matrix theory with non-linear σ-model and Keldysh technique we develop a
unified theoretical approach enabling one to non-perturbatively study the effect of electron-electron int...
Phonon-assisted decoherence and tunneling in quantum dot molecules
quantum dot phonon decoherence tunneling
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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...
Quantum decoherence in strongly correlated electron system
Quantum decoherence strongly correlated electron system
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2010/11/19
Physical phenomena in the vicinity of metal-to-insulator transition are analyzed by considering decoherence process between the localized state, |L>and the itinerant state, |I> in strongly correlated ...
Vibrational relaxation and decoherence of Rb_2 attached to helium nanodroplets
Vibrational relaxation decoherence of Rb_2 helium nanodroplets
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2010/11/16
The vibrational wave-packet dynamics of diatomic rubidium molecules (Rb_2) in triplet states formed on the surface of superfluid helium nanodroplets is investigated both experimentally and theoretica...
Decoherence in a quantum harmonic oscillator monitored by a Bose-Einstein condensate
Decoherence quantum harmonic oscillator monitored Bose-Einstein condensate
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2010/11/9
We investigate the dynamics of a quantum oscillator, whose evolution is monitored by a Bose-Einstein condensate (BEC) trapped in a symmetric double well potential. It is demonstrated that the oscillat...
Revivals in the attractive BEC in a double-well potential and their decoherence
Revivals attractive BEC double-well potential their decoherence
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2010/11/11
We study the dynamics of ultracold attractive atoms in a weakly linked two potential wells. We consider an unbalanced initial state and monitor dynamics of the population difference between the two we...