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New approach may help clear hurdle to large-scale quantum computing（图）
量子计算 量子处理器 穿梭纠缠 可编程量子机器
2023/6/21
Building a plane while flying it isn’t typically a goal for most, but for a team of Harvard-led physicists that general idea might be a key to finally building large-scale quantum computers.
Accurate quantum-mechanical rate constants for a linear response Azzouz-Borgis proton transfer model employing the multilayer multiconfiguration time-dependent Hartree approach
quantum-mechanical linear response Azzouz-Borgia proton transfer model time-dependent Hartree approach
2014/5/28
The multilayer multiconfiguration time-dependent Hartree (ML-MCTDH) method is applied to simulate the quantum dynamics and thermal rate constant of the Azzouz-Borgis model of proton transfer in a pola...
Irreversible evolution of a two-nucleus spin NMR system - subdynamics approach
Irreversible evolution spin NMR system subdynamics approach
2010/11/8
The time irreversible evolution of a two-nucleus spin system interacting with a magnetic field is analyzed in the framework of the subdynamics theory. The spin system is determined by the H(1), C(13) ...
Detecting genuine multipartite quantum non-locality -- a simple approach and generalization to arbitrary dimension
multipartite Quantum Physics dimension
2010/11/8
The structure of Bell-type inequalities detecting genuine multipartite non-locality, and hence detecting genuine multipartite entanglement, is investigated. We first present a simple and intuitive app...
A semiquantitative approach to the impurity-band-related transport properties of GaMnAs nanolayers
semiquantitative impurity-band-related
2010/11/18
We investigate the spin-polarized transport of GaMnAs nanolayers in which a ferromagnetic order
exists below a certain transition temperature. Our calculation for the self-averaged resistivity takes ...
Numerical approach to SUSY quantum mechanics and the gauge/gravity duality
Numerical approach to SUSY quantum mechanics gauge/gravity duality
2011/1/14
We demonstrate that Monte-Carlo simulation is a practical tool to study nonperturbative
aspects of supersymmetric quantum mechanics. As an example we study D0-brane quantum
mechanics in the context ...
EOS in 2+1 flavor QCD with improved Wilson quarks by the fixed-scale approach
EOS 2+1 flavor QCD improved Wilson quarks fixed-scale approach
2011/1/14
We present the status of our study on the equation of state in 2+1 flavor QCD with nonperturbatively improved Wilson quarks coupled with the RG improved glue. We apply the Tintegration method to non-p...
Modified Padé Approach to the S-Wave Charmonium Spectroscopy in QCD
Modified Padé Approach S-Wave Charmonium Spectroscopy QCD
2010/11/9
We calculate the S-wave charmonium spectroscopy using the Hamiltonian with the non-relativistic QCD (NRQCD) potential. The logarithmic factor $\ln \mu r$, appearing in the next-to-leading order QCD lo...
Dynamics of a qubit coupled to a dissipative nonlinear quantum oscillator: an effective bath approach
Dynamics qubit coupled dissipative nonlinear quantum oscillator effective bath approach
2010/11/8
We consider a qubit coupled to a nonlinear quantum oscillator, the latter coupled to an Ohmic bath, and investigate the qubit dynamics. This composed system can be mapped onto that of a qubit coupled...
Coupled-channels density-matrix approach to low-energy nuclear collision dynamics: A technique for quantifying quantum decoherence effects on reaction observables
Coupled-channels density-matrix low-energy nuclear collision dynamics reaction observables
2010/11/11
The coupled-channels density-matrix technique for nuclear reaction dynamics, which is based on the Liouville-von Neumann equation with Lindblad dissipative terms, is developed with the inclusion of fu...
Finite Quantum Models: Constructive Approach to Description of Quantum Behavior
Finite Quantum Models Constructive Approach Description Quantum Behavior
2010/11/11
Universality of quantum mechanics -- its applicability to physical systems of quite different nature and scales -- indicates that quantum behavior can be a manifestation of general mathematical proper...
Statistical Approach to Quantum Chaotic Ratchets
Statistical Approach Quantum Chaotic Ratchets
2010/4/2
The quantum ratchet effect in fully chaotic systems is approached by studying, for the first time, \emph{statistical} properties of the ratchet current over well-defined sets of initial states. Natura...
Two-spinors, oscillator algebras, and qubits: Aspects of manifestly covariant approach to relativistic quantum information
Two-spinors SL(2,C) qubits quantization
2010/3/10
The first part of the paper reviews applications of 2-spinor methods to relativistic qubits (analogies between tetrads in Minkowski space and 2-qubit states, qubits defined by means of null directions...
Damage Spreading in the Ising Model with a Special
Metropolis Dynamics Approach
S=1/2 S=1 Ising models dynamical phase transition damage spreading special metropolis dynamics
2007/8/15
2001Vol.35No.4pp.480-484DOI:
Damage Spreading in the Ising Model with a Special
Metropolis Dynamics Approach
LIU Ce-Jun,1 H.-B.
Schüttler1 and HU Jia-Zhen2
1 Center for...
Analytical Structure Matching and Very Precise Approach to the Coulombic Quantum Three-Body Problem
quantum three-body problem analytical structure matching the least square method asymptotic series Bartlett-Fock expansion
2007/8/15
2001Vol.35No.1pp.71-77DOI:
Analytical Structure Matching and Very Precise Approach to the Coulombic Quantum Three-Body Problem
TAN Shi-Na
Institute of Theoretical Physic...