Multi-Photon Entanglement Concentration and Quantum Cryptography
arXiv:quant-ph/0109132 · doi:10.1103/PhysRevLett.88.187902
Abstract
Multi-photon states from parametric down-conversion can be entangled both in polarization and photon number. Maximal high-dimensional entanglement can be concentrated from these states via photon counting. This makes them natural candidates for quantum key distribution, where the presence of more than one photon per detection interval has up to now been considered as undesirable. We propose a simple multi-photon protocol for the case of low losses and point out the robustness of the entanglement under photon loss.
5 pages, 1 figure
References in corpus (3)
Cited by in corpus (25)
- The Security of Practical Quantum Key Distribution
- Multiphoton Quantum Optics and Quantum State Engineering
- Quantum entanglement of a large number of photons
- Rate-loss analysis of an efficient quantum repeater architecture
- Reliable multiphoton generation in waveguide QED
- Theory of an Entanglement Laser
- Robust Preparation of GHZ and W States of Three Distant Atoms
- Generation of GHZ entangled states of photons in multiple cavities via a superconducting qutrit or an atom through resonant interaction
- Conditional q-Entropies and Quantum Separability: A Numerical Exploration
- Quantum Phase Estimation with Entangled Photons produced by Parametric Down Conversion
- Greenberger-Horne-Zeilinger Nonlocality in Arbitrary Even Dimensions
- Preparation of n-qubit Greenberger-Horne-Zeilinger entangled states in cavity QED: An approach with tolerance to nonidentical qubit-cavity coupling constants
- Measurements of the dependence of the photon-number distribution on the number of modes in parametric down-conversion
- Towards quantum frequency combs: boosting the generation of highly nonclassical light states by cavity-enhanced parametric down-conversion at high repetition rates
- Resilience of multi-photon entanglement under losses
- Non separable Werner states in spontaneous parametric down-conversion
- One-step generation of multi-atom Greenberger-Horne-Zeilinger states in separate cavities via adiabatic passage
- Number-phase uncertainty relations and bipartite entanglement detection in spin ensembles
- On the distribution of entanglement changes produced by unitary operations
- Spectral phase conjugation via extended phase matching
- General mapping of multi-quit entanglement conditions to non-separability indicators for quantum optical fields
- Protocol for suppression of noise from stimulated multi-photon emissions in concatenated entanglement swapping links and quantum repeaters
- On the coherence veryfication of the continuous variable state in Fock space
- Deterministic preparation of non-classical states of light in cavity-optomechanics
- Wave packet dynamics of entangled q-deformed states