Quantum physics

Quantum physics is the study of matter and energy at its most fundamental level. A central tenet of quantum physics is that energy comes in indivisible packets called quanta. Quanta behave very differently to macroscopic matter: particles can behave like waves, and waves behave as though they are particles.

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Latest Research and Reviews

  • Research |

    When a quantum system couples with its surroundings, macroscopic irreversibility emerges even though the microscopic Hamiltonian is itself time-reversal symmetric, causing the phenomena associated with certain symmetry-protected topological phases to be unstable.

    • Max McGinley
    •  & Nigel R. Cooper
  • Research
    | Open Access

    The authors demonstrate a two-dimensional optomechanical crystal cavity which traps a phonon mode within a phononic bandgap while yielding large thermal conductivity to the environment. High quantum cooperativity at millikelvin temperatures is realized, suitable for quantum coherent control.

    • Hengjiang Ren
    • , Matthew H. Matheny
    • , Gregory S. MacCabe
    • , Jie Luo
    • , Hannes Pfeifer
    • , Mohammad Mirhosseini
    •  & Oskar Painter
  • Research |

    A quasiparticle in Andreev levels was coupled to a superconducting microwave resonator and its spin was monitored in real time. This has potential applications in the readout of superconducting spin qubits and measurements of Majorana fermions.

    • M. Hays
    • , V. Fatemi
    • , K. Serniak
    • , D. Bouman
    • , S. Diamond
    • , G. de Lange
    • , P. Krogstrup
    • , J. Nygård
    • , A. Geresdi
    •  & M. H. Devoret
  • Research |

    Uncorrected noise prevents quantum computers from running deep algorithms and outperforming classical machines. A method is now reported that allows noisy shallow quantum algorithms to be used to solve classically hard problems.

    • Sergey Bravyi
    • , David Gosset
    • , Robert König
    •  & Marco Tomamichel
  • Research
    | Open Access

    Successful translation of quantum optical communication schemes from the laboratory to real-world use requires compatibility and integration with existing infrastructure. Here, an entangled LED is used as a single-photon source to demonstrate high-fidelity transfer of multiplexed quantum and classical information across a real-world city.

    • Zi-Heng Xiang
    • , Jan Huwer
    • , Joanna Skiba-Szymanska
    • , R. Mark Stevenson
    • , David J. P. Ellis
    • , Ian Farrer
    • , Martin B. Ward
    • , David A. Ritchie
    •  & Andrew J. Shields

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