Quantum jumps of light recording the birth and death of a photon in a cavity

@article{Gleyzes2007QuantumJO,
  title={Quantum jumps of light recording the birth and death of a photon in a cavity},
  author={S. Gleyzes and Stefan Kuhr and Christine Guerlin and Julien Bernu and Samuel Deleglise and Ulrich Busk Hoff and M. Brune and Jean-Michel Raimond and Serge Haroche},
  journal={Nature},
  year={2007},
  volume={446},
  pages={297-300}
}
A microscopic quantum system under continuous observation exhibits at random times sudden jumps between its states. The detection of this quantum feature requires a quantum non-demolition (QND) measurement repeated many times during the system’s evolution. Whereas quantum jumps of trapped massive particles (electrons, ions or molecules) have been observed, this has proved more challenging for light quanta. Standard photodetectors absorb light and are thus unable to detect the same photon twice… 

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References

SHOWING 1-10 OF 34 REFERENCES

Seeing a single photon without destroying it

Light detection is usually a destructive process, in that detectors annihilate photons and convert them into electrical signals, making it impossible to see a single photon twice. But this limitation

Manipulation of photons in a cavity by dispersive atom-field coupling: Quantum-nondemolition measurements and generation of "Schrödinger cat" states.

TLDR
The possibility of photon ``manipulation'' through nonresonant atom-field interactions opens a domain in cavity QED studies by using circular Rydberg atoms and very high-Q superconducting microwave cavities.

Direct spectroscopic observation of quantum jumps of a single molecule

BOHR'S notion of quantum jumps between electronic states of an excited atom has now been demonstrated experimentally for single ions confined in radio-frequency traps and interacting with a driving

Manipulating quantum entanglement with atoms and photons in a cavity

After they have interacted, quantum particles generally behave as a single nonseparable entangled system. The concept of entanglement plays an essential role in quantum physics. We have performed

Observation of quantum jumps.

They were mostly considered, at that time and even later, a kind of artifact of Bohr's model of the atom whose real existence was questionable and, anyway, not to be verified with the common large

Measuring photon numbers in a cavity by atomic interferometry: optimizing the convergence procedure

. We describe the optimum detection procedure to follow in order to measure by atomic interferometry the number of photons present in a cavity by using a Quantum nondemolition scheme. The method we

Resolving photon number states in a superconducting circuit

TLDR
A circuit QED experiment is reported in the strong dispersive limit, a new regime where a single photon has a large effect on the qubit without ever being absorbed, the basis of a logic bus for a quantum computer.

Quantum nondemolition measurements

  • P. Grangier
  • Physics
    Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505)
  • 2000
Summary form only given. The present techniques allow one to perform continuous or discrete quantum measurements at or even beyond the standard "quantum noise" level, even on single quantum objects.

Observing the Quantum Limit of an Electron Cyclotron: QND Measurements of Quantum Jumps between Fock States

Quantum jumps between Fock states of a one-electron oscillator reveal the quantum limit of a cyclotron. With a surrounding cavity inhibiting synchrotron radiation 140-fold, the jumps show a 13 s Fock