@article{6368,
  abstract     = {An optical network of superconducting quantum bits (qubits) is an appealing platform for quantum communication and distributed quantum computing, but developing a quantum-compatible link between the microwave and optical domains remains an outstanding challenge. Operating at T < 100 mK temperatures, as required for quantum electrical circuits, we demonstrate a mechanically mediated microwave–optical converter with 47% conversion efficiency, and use a classical feed-forward protocol to reduce added noise to 38 photons. The feed-forward protocol harnesses our discovery that noise emitted from the two converter output ports is strongly correlated because both outputs record thermal motion of the same mechanical mode. We also discuss a quantum feed-forward protocol that, given high system efficiencies, would allow quantum information to be transferred even when thermal phonons enter the mechanical element faster than the electro-optic conversion rate.},
  author       = {Higginbotham, Andrew P and Burns, P. S. and Urmey, M. D. and Peterson, R. W. and Kampel, N. S. and Brubaker, B. M. and Smith, G. and Lehnert, K. W. and Regal, C. A.},
  issn         = {1745-2473},
  journal      = {Nature Physics},
  number       = {10},
  pages        = {1038--1042},
  publisher    = {Springer Nature},
  title        = {{Harnessing electro-optic correlations in an efficient mechanical converter}},
  doi          = {10.1038/s41567-018-0210-0},
  volume       = {14},
  year         = {2018},
}

@article{7773,
  abstract     = {For more than a century, physicists have described real solids in terms of perturbations about perfect crystalline order1. Such an approach takes us only so far: a glass, another ubiquitous form of rigid matter, cannot be described in any meaningful sense as a defected crystal2. Is there an opposite extreme to a crystal—a solid with complete disorder—that forms an alternative starting point for understanding real materials? Here, we argue that the solid comprising particles with finite-ranged interactions at the jamming transition3,4,5 constitutes such a limit. It has been shown that the physics associated with this transition can be extended to interactions that are long ranged6. We demonstrate that jamming physics is not restricted to amorphous systems, but dominates the behaviour of solids with surprisingly high order. Just as the free-electron and tight-binding models represent two idealized cases from which to understand electronic structure1, we identify two extreme limits of mechanical behaviour. Thus, the physics of jamming can be set side by side with the physics of crystals to provide an organizing structure for understanding the mechanical properties of solids over the entire spectrum of disorder.},
  author       = {Goodrich, Carl Peter and Liu, Andrea J. and Nagel, Sidney R.},
  issn         = {1745-2473},
  journal      = {Nature Physics},
  number       = {8},
  pages        = {578--581},
  publisher    = {Springer Nature},
  title        = {{Solids between the mechanical extremes of order and disorder}},
  doi          = {10.1038/nphys3006},
  volume       = {10},
  year         = {2014},
}