6533b828fe1ef96bd128841a
RESEARCH PRODUCT
Unrestricted generation of pure two-qubit states and entanglement diagnosis by single-qubit tomography.
Miguel V. AndrésF. De ZelaP SánchezB MillerJ. GonzalesF Auccapucllasubject
PhysicsPhotonbusiness.industryQuantum Physics02 engineering and technologyQuantum entanglement021001 nanoscience & nanotechnologyPolarization (waves)01 natural sciencesAtomic and Molecular Physics and OpticsPhoton counting010309 opticsComputer Science::Emerging TechnologiesOpticsQubitQuantum mechanics0103 physical sciencesTomography0210 nano-technologybusinessdescription
We present an experimental proof-of-principle for the generation and detection of pure two-qubit states that have been encoded in degrees of freedom that are common to both classical-light beams and single photons. Our protocol requires performing polarization tomography on a single qubit from a qubit pair. The degree of entanglement in the qubit pair is measured by concurrence, which can be directly extracted from intensity measurements-or photon counting-entering single-qubit polarization tomography.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-07-02 | Optics letters |