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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Quantum Error Correction: Fault-tolerance and Universality
量子纠错 容错性 通用性
2023/4/17
There is a big gap between the so-called NISQ (noisy intermediate-scale quantum) and FTQ (fault-tolerant quantum) computing. Recently, we introduced QEQ (quasi-exact quantum) computing, which lies in ...
The LHCb collaboration has reported an intriguing new result in its quest to test a key principle of the Standard Model called lepton universality. Although not statistically significant, the finding ...
High-precision measurement of the thermal exponent for the three-dimensional XY universality class
Accuracy of measurement measurement superfluids lipase
2014/12/20
Simulation results are reported for the critical point of the two-component ϕ4 field theory. The correlation-length exponent is measured to high precision with the result ν=0.6717(3). This value ...
Non-Universality in Semi-Directed Barabasi-Albert Networks
General BA directed BA undirected BA Neighbors Fortran programs
2012/5/17
In usual scale-free networks of Barabasi-Albert type, a newly added node selects randomly m neighbors from the already existing network nodes, proportionally to the number of links these had before. T...
Universality of the Three-Body Parameter for Efimov States in Ultracold Cesium
Three-Body Parameter Efimov States in Ultracold Cesium
2011/9/29
We report on the observation of triatomic Efimov resonances in an ultracold gas of cesium atoms. Exploiting the wide tunability of interactions resulting from three broad Feshbach resonances in the sa...
Universality in bosonic dimer-dimer scattering
Universality bosonic dimer-dimer scattering Quantum Gases
2011/8/5
Abstract: Bosonic dimer-dimer scattering is studied near the unitary limit using momentum-space equations for the four-particle transition operators. The impact of the Efimov effect on the dimer-dimer...
Scaling and universality in two dimensions: three-body bound states with short-ranged interactions
two dimensions three-body bound states short-ranged interactions Quantum Gases
2011/10/8
Abstract: The momentum space zero-range model is used to investigate universal properties of three interacting particles confined to two dimensions. The pertinent equations are first formulated for a ...
Universality of the self gravitational potential energy of any fundamental particle
Cosmology quantum mechanics gravitational energy cosmological scale factor Weinbergs relation
2011/8/4
Abstract: Using the relation proposed by Weinberg in 1972, combining quantum and cosmological parameters, we prove that the self gravitational potential energy of any fundamental particle is a quantum...
Universality of local spectral statistics of random matrices
Random matrix Local semicircle law Tracy-Widom distribution Dyson Brownian motion
2011/7/28
Abstract: The Wigner-Gaudin-Mehta-Dyson conjecture asserts that the local eigenvalue statistics of large random matrices exhibit universal behavior depending only on the symmetry class of the matrix e...
Quadratic Dynamical Decoupling: Universality Proof and Error Analysis
Quadratic Dynamical Decoupling Universality Proof Error Analysis Quantum Physics
2011/7/27
Quadratic Dynamical Decoupling: Universality Proof and Error Analysis.
Quadratic Dynamical Decoupling: Universality Proof and Error Analysis
Quadratic Dynamical Decoupling Universality Proof Error Analysis
2011/9/13
We prove the universality of the generalized QDDN1N2 (quadratic dynamical decoupling) pulse sequence for near-optimal suppression of general single-qubit decoherence. Earlier work showed numerically t...
The Kardar-Parisi-Zhang equation and universality class
The Kardar-Parisi-Zhang equation universality class Disordered Systems and Neural Networks
2011/7/27
Abstract: Brownian motion is a continuum scaling limit for a wide class of random processes, and there has been great success in developing a theory for its properties (such as distribution functions ...
Proof of universality of electrical conductivity at finite chemical potential
electrical conductivity finite chemical potential
2010/12/23
It was proposed in arXiv:1008.2944 that, for certain gauge theories with gravity duals, electrical conductivity at finite chemical potential is universal. Here we provide a general proof that, when m...
Proof of universality of electrical conductivity at finite chemical potential
electrical conductivity finite chemical potential
2010/12/23
It was proposed in arXiv:1008.2944 that, for certain gauge theories with gravity duals, electrical conductivity at finite chemical potential is universal. Here we provide a general proof that, when m...
Scattering universality classes of side jump in anomalous Hall effect
universality classes of side jump anomalous Hall effect
2010/11/23
The anomalous Hall conductivity has an important extrinsic contribution known as side jump
contribution, which is independent of both scattering strength and disorder density. Nevertheless, we discov...