97 citations · 292 across the 16 of their papers we have counts for
16 papers
Spiderweb array: A sparse spin-qubit array
Jelmer M. Boter, Juan P. Dehollain, Jeroen P. G. van Dijk +8
One of the main bottlenecks in the pursuit of a large-scale--chip-based quantum computer is the large number of control signals needed to operate qubit systems. As system sizes sca…
Bell inequality violation on small NISQ computers
H. W. L. Naus, H. Polinder
Quantum computational experiments exploiting Noisy Intermediate-Scale Quantum (NISQ) devices to demonstrate violation of a Bell inequality are proposed. They consist of running spe…
NISQ computing for decision making under uncertainty
H. W. L. Naus
Noisy Intermediate-Scale Quantum computers are expected to be available this year. It is proposed to exploit such a device for decision making under uncertainty. The probabilistic…
Four electron spin qubits with exchange interaction
H. W. L. Naus
Four electron spin qubits in quantum dots are studied by means of an exchange interaction Hamiltonian. The time-independent Schrödinger equation is exactly analytically solved for…
Consequences of unitary evolution of coupled qubit-resonator systems for stabilizing circuits in surface codes
H. W. L. Naus, R. Versluis
Surface codes based on stabilizer circuits may pave the way for large scale fault-tolerant quantum computation. The surface code uses only single- and two-qubit gates and the error…
Semi-analytical RWA formalism to solve Schrödinger equations for multi-qubit systems with resonator couplings
H. W. L. Naus, R. Versluis
In this study, we develop a semi-analytical framework to solve generalized Jaynes-Tavis-Cummings Hamiltonians describing multi-qudit systems coupled via EM resonators. Besides the…
Covariance of Light-Front Models: Pair Current
J. P. B. C de Melo, T. Frederico, H. W. L. Naus +1
We compute the "+" component of the electromagnetic current of a composite spin-one two-fermion system for vanishing momentum transfer component . In particular, we ex…
Pion Eletromagnetic Current in the Ligth-Cone Formalism
J. P. B. C. de Melo, H. W. L. Naus, T. Frederico
The electromagnetic form factor of the pion is calculated in a pseudoscalar field theoretical model which constituent quarks. We extract the form factor using the "+" component of…
Ward-Takahashi Identidy on the Ligth-Front
H. W. L. Naus, J. P. B. C de Melo, T. Frederico
The Ward-Takahashi identity, reflecting local gauge invariance, is perturbatively verified for a boson model in light front field theory. A careful integration over the light front…
Construction of gauge invariant effective nucleonic theories: functional approach
H. W. L. Naus
Starting from relativistic quantum field theories, describing interacting nucleons and pions coupled to the dynamical electromagnetic field, the pion degrees of freedom are elimina…
QCD near the Light Cone
H. W. L. Naus, H. J. Pirner, T. J. Fields +1
Starting from the QCD Lagrangian, we present the QCD Hamiltonian for near light cone coordinates. We study the dynamics of the gluonic zero modes of this Hamiltonian. The strong co…
Local gauge invariance implies Siegert's hypothesis
H. W. L. Naus
The nonrelativistic Ward-Takahashi identity, a consequence of local gauge invariance in quantum mechanics, shows the necessity of exchange current contributions in case of nonlocal…
Quantum Electrodynamics in the Light-Front Weyl Gauge
J. Przeszowski, H. W. L. Naus, A. C. Kalloniatis
We examine QED(3+1) quantised in the `front form' with finite `volume' regularisation, namely in Discretised Light-Cone Quantisation. Instead of the light-cone or Coulomb gauges, w…
Effective Hamiltonian for Scalar Theories in the Gaussian Approximation
H. W. L. Naus, T. Gasenzer, H. --J. Pirner
We use a Gaussian wave functional for the ground state to reorder the Hamiltonian into a free part with a variationally determined mass and the rest. Once spontaneous symmetry brea…
Analysis of the Low-Energy Theorem for γp \to p π^0
H. W. L. Naus, R. M. Davidson
The derivation of the `classical' low-energy theorem (LET) for γp \rightarrow pπ^0 is re-examined and compared to chiral perturbation theory. Both results are correct and are not c…
Effective light front quantization of scalar field theories and two-dimensional electrodynamics
E. V. Prokhvatilov, H. W. L. Naus, H. --J. Pirner
We introduce a new method to include condensates in the light-cone Hamiltonian. By using a Gaussian approximation to the ordinary vacuum in a theory close to the light front, we de…