On Preparing Entangled Pairs of Polarization Qubits in the Frequency Non-Degenerate Regime
arXiv:1008.5263 · doi:10.1134/S1063776110020019
Abstract
The problems associated with practical implementation of the scheme proposed for preparation of arbitrary states of polarization ququarts based on biphotons are discussed. The influence of frequency dispersion effects are considered, and the necessity of group velocities dispersion compensation in the frequency non-degenerate case even for continuous pumping is demonstrated. A method for this compensation is proposed and implemented experimentally. Physical restrictions on the quality of prepared two-photon states are revealed.
9 pages, 6 figures
References in corpus (14)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- On the Measurement of Qubits
- Ultra-bright source of polarization-entangled photons
- Quantum cryptography with 3-state systems
- Non-maximally entangled states: production, characterization and utilization
- Violations of local realism by two entangled quNits are stronger than for two qubits
- Research on Hidden Variable Theories: a review of recent progresses
- Quantum Cryptography using larger alphabets
- Interferometric Bell-state preparation using femtosecond-pulse-pumped Spontaneous Parametric Down-Conversion
- Bell State Preparation using Pulsed Non-Degenerate Two-Photon Entanglement
- Polarization ququarts
- Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons
- Generation of different Bell states within the SPDC phase-matching bandwidth
- Optimal dimensionality for quantum cryptography