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Creating and detecting micro-macro photon-number entanglement by amplifying and deamplifying a single-photon entangled state

Ghobadi, R ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevLett.110.170406
  3. Publisher: 2013
  4. Abstract:
  5. We propose a scheme for the observation of micro-macro entanglement in photon number based on amplifying and deamplifying a single-photon entangled state in combination with homodyne quantum state tomography. The created micro-macro entangled state, which exists between the amplification and deamplification steps, is a superposition of two components with mean photon numbers that differ by approximately a factor of three. We show that for reasonable values of photon loss it should be possible to detect micro-macro photon-number entanglement where the macrosystem has a mean number of one hundred photons or more
  6. Keywords:
  7. Entangled state ; Quantum state tomography ; Micro-macro ; Photon loss ; Photon numbers ; Deamplification ; Reasonable value ; Two-component ; Particle beams ; Photons ; Quantum entanglement
  8. Source: Physical Review Letters ; Volume 110, Issue 17 , April , 2013 ; 00319007 (ISSN)
  9. URL: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.170406