Programmable discriminator of coherent states - experimental realization
arXiv:0711.4712 · doi:10.1103/PhysRevA.77.034306
Abstract
The optical implementation of the recently proposed unambiguous identification of coherent states is presented. Our system works as a programmable discriminator between two, in general non-orthogonal weak coherent states. The principle of operation lies in the interference of three light beams - two program states and one unknown coherent state which can be equal to whichever of the two program states. The experiment is based on fiber optics. Its results confirm theoretical predictions and the experimental setup can be straightforwardly extended for higher numbers of program states.
4 pages, 6 figures
References in corpus (14)
- Optimum Unambiguous Discrimination Between Linearly Independent Symmetric States
- Unambiguous state discrimination in quantum cryptography with weak coherent states
- Experimentally realizable quantum comparison of coherent states and its applications
- Optimal discrimination of mixed quantum states involving inconclusive results
- A universal programmable quantum state discriminator that is optimal for unambiguously distinguishing between unknown states
- Quantum multimeters: A programmable state discriminator
- Reduction Theorems for Optimal Unambiguous State Discrimination of Density Matrices
- Comparison of two unknown pure quantum states
- Unambiguous State Discrimination of Coherent States with Linear Optics: Application to Quantum Cryptography
- Distinguishing mixed quantum states: Minimum-error discrimination versus optimum unambiguous discrimination
- Fibre-optics implementation of asymmetric phase-covariant quantum cloner
- Optimal receiver for quantum cryptography with two coherent states
- Unambiguous coherent state identification: Searching a quantum database
- Experimental realization of a programmable quantum-state discriminator and a phase-covariant quantum multimeter
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