Control, measurement and propagation of entanglement in photon pairs generated through type-II parametric downconversion
arXiv:0904.3923 · doi:10.1103/PhysRevA.79.033839
Abstract
We present a study of the effects of dispersion on the properties of photon pairs generated by type-II, collinear spontaneous parametric downconversion. Specifically, we take into consideration the effects of a chirped pump, as well as of dispersive propagation of the photon pairs. We present expressions for the joint amplitude both in the spectral and temporal domains, as well as for the chronocyclic Wigner function of heralded single photons, which fully characterizes the single photon spectral (temporal) properties. On the one hand, we show that unwanted effects of pump chirp in terms of the heralded single photon duration can be suppressed for states designed to be factorable and spectrally elongated. On the other hand, we show that pump chirp constitutes an effective tool for the control of the degree of photon-pair entanglement. We show that when frequency-entangled photon pairs propagate through a dispersive medium, entanglement can "migrate" between the modulus and phase of the joint temporal amplitude.
arXiv comment15 pages, 9 figures
References in corpus (16)
- Review article: Linear optical quantum computing
- Heralded Generation of Ultrafast Single Photons in Pure Quantum States
- Demonstration of Dispersion-Cancelled Quantum-Optical Coherence Tomography
- Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber
- Entangled Two-Photon Wave Packet in a Dispersive Medium
- Conditional preparation of single photons using parametric downconversion: A recipe for purity
- Transverse Entanglement Migration in Hilbert Space
- Two-photon coincident-frequency-entanglement via extended phase matching
- Packet narrowing and quantum entanglement in photoionization and photodissociation
- Generation of two-photon states with arbitrary degree of entanglement via nonlinear crystal superlattices
- Pure-state single-photon wave-packet generation by parametric down conversion in a distributed microcavity
- Generating Polarization-Entangled Photon Pairs with Arbitrary Joint Spectrum
- Tunable control of the bandwidth and frequency correlations of entangled photons
- Joint Spectrum Mapping of Polarization Entanglement in Spontaneous Parametric Down-conversion
- Generation of Fourier transform limited heralded single photons
- Parametric downconversion with optimized spectral properties in nonlinear photonic crystals
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- On the relationship between pump chirp and single-photon chirp in spontaneous parametric downconversion
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- Spontaneous parametric down conversion in chirped, aperiodically-poled crystals
- Spatial entanglement and state engineering via four-photon Hong-Ou-Mandel interference
- Quantum control of entangled photon-pair generation in electron-atom collisions driven by laser-synthesized free-electron wave packets
- The Impact of Photon Entanglement on Local and Nonlocal Dispersion Cancellation