How to test the “quantumness” of a quantum computer?

@article{Zagoskin2014HowTT,
  title={How to test the “quantumness” of a quantum computer?},
  author={Alexandre M. Zagoskin and E. Il'ichev and M. Grajcar and Joseph J. Betouras and Franco Nori},
  journal={Frontiers in Physics},
  year={2014},
  volume={2},
  pages={33}
}
Recent devices, using hundreds of superconducting quantum bits, claim to perform quantum computing. However, it is not an easy task to determine and quantify the degree of quantum coherence and control used by these devices. Namely, it is a difficult task to know with certainty whether or not a given device (e.g., the D-Wave One or D-Wave Two) is a quantum computer. Such a verification of quantum computing would be more accessible if we already had some kind of working quantum computer, to be… 
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15 Citations
Background Citations
4
Results Citations
1

15 Citations

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Quantum Bits with Josephson Junctions
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Microwave photonics with superconducting quantum circuits
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© 2018 American Physical Society. We consider the evolution of the quantum states of a Hamiltonian that is parametrically perturbed via a term proportional to the adiabatic parameter λ(t). Starting…
On the quantum spin glass transition on the Bethe lattice
We investigate the ground-state properties of a disorderd Ising model with uniform transverse field on the Bethe lattice, focusing on the quantum phase transition from a paramagnetic to a glassy…
Quantum Optimization of Fully-Connected Spin Glasses
The Sherrington-Kirkpatrick model with random $\pm1$ couplings is programmed on the D-Wave Two annealer featuring 509 qubits interacting on a Chimera-type graph. The performance of the optimizer…
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