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Quantum Atom Optics

Quantum Atom Optics

Permanent staff: Marc Cheneau, Denis Boiron, Christoph Westbrook

Postdocs: Maxime Perrier, Alexandre Dareau

PhD. Students: Ziyad Amodjee

We have been using condensates of metastable helium atoms (in the 23S1 state often referred to as He*) to revisit several well known situations in quantum optics. Perhaps the most important feature of He* is its 20 eV internal energy. This energy causes electron emission upon contact with a surface enables the use electron multipliers and micro-channel plates (MCP) to electronically detect the atoms. The MCP detector together with a delay line anode allows us to reconstruct the three dimensional momentum vectors of single atoms. With this information we can reconstruct momentum distributions and the correlations of the atom clouds released from a trap.

Publication

Thermal counting statistics in an atomic two-mode squeezed vacuum state

  • Les auteurs : Perrier Maxime Amodjee Ziyad Dussarrat Pierre Dareau Alexandre Aspect Alain Cheneau Marc Boiron Denis Westbrook Christoph
  • DOI : 10.21468/SciPostPhys.7.1.002
  • Type du document : Article dans une revue
  • SciPost Physics Volume :7 , Année : 2019
  • BibTex

Atomic Hong Ou Mandel experiment (Orale)

  • Les auteurs : Westbrook Christoph I Aspect Alain Imanaliev Almazbek Boiron Denis Cheneau Marc Lopes Raphaël
  • Type du document : Communication dans un congrès
  • Année : 2015
  • BibTex

Atomic Hong Ou Mandel experiment (Orale)

  • Les auteurs : Westbrook Christoph I Aspect Alain Imanaliev Almazbek Boiron Denis Cheneau Marc Lopes Raphaël
  • Type du document : Communication dans un congrès
  • Année : 2015
  • BibTex

Atomic Hong OU Mandel experiment (Orale)

  • Les auteurs : Westbrook Christoph I Aspect Alain Boiron Denis Lopes Raphaël Cheneau Marc Imanaliev Almazbek
  • Type du document : Communication dans un congrès
  • Année : 2015
  • BibTex

Atomic Hong-Ou-Mandel effect (Orale)

  • Les auteurs : Boiron Denis Lopes Raphael Imanaliev Almazbek Cheneau Marc Aspect Alain Westbrook Christoph I
  • Type du document : Communication dans un congrès
  • Année : 2015
  • BibTex

Atomic analogue of the Hong-Ou-Mandel effect (Orale)

  • Les auteurs : Boiron Denis Lopes Raphael Imanaliev Almazbek Aspect Alain Cheneau Marc Westbrook Christoph I
  • Type du document : Communication dans un congrès
  • Année : 2015
  • BibTex

An atomic Hong-Ou-Mandel experiment (Orale)

  • Les auteurs : Boiron Denis Lopes Raphael Imanaliev Almazbek Dussarrat Pierre Perrier Maxime Aspect Alain Cheneau Marc Westbrook Christoph I
  • Type du document : Communication dans un congrès
  • Année : 2016
  • BibTex

Dynamical Casimir effect and beyond (Orale)

  • Les auteurs : Boiron Denis
  • Type du document : Communication dans un congrès
  • Année : 2016
  • BibTex

Two-Particle Four-Mode Interferometer for Atoms (poster)

  • Les auteurs : Dussarrat Pierre Perrier Maxime Imanaliev Almazbek Lopes Raphael Aspect Alain Cheneau Marc Boiron Denis Westbrook Chris
  • Type du document : Communication dans un congrès
  • Année : 2017
  • BibTex

Two-particle, four-mode interferometer for atoms

  • Les auteurs : Dussarrat Pierre Perrier Maxime Imanaliev Almazbek Lopes Raphael Aspect Alain Cheneau Marc Boiron Denis Westbrook Christoph
  • DOI : 10.1103/PhysRevLett.119.173202
  • Type du document : Article dans une revue
  • Physical Review Letters Volume :119 , Pages : 173202 , Année : 2017
  • BibTex

toto

We have used a variant of the Hong Ou Mandel setup described below to realize a two-particle interferometer with four input and four output ports as shown in the figure. The source generates atom pairs in a superposition of different momentum states:

|ψ) ~ |p,-p) + |p',-p').

When such a state is injected into the atom interferometer, the probability of detecting an atom at each output port is 1/4, independent of any interferometer phase. The correlations between the different output ports however do vary as a function of the relative phase of the two closed circuits (red and blue in the figure). We have demonstrated this effect in our apparatus. An improved version of this experiment can lead to the violation of a Bell inequality involving the motional degrees of freedom of freely falling massive particles.

Hong-Ou-Mandel

The Hong Ou Mandel (HOM) effect is a remarkable illustration of 2 particle interference. Two identical particles arrive at the input ports of a beam splitter. If they are perfectly overlapped, they never exit in opposite output ports. The effect is well known for photons. We have recently performed the analogous experiment for atoms.

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