Multi-Colour Quantum Metrology with Entangled Photons
arXiv:1308.2527 · doi:10.1103/PhysRevLett.111.093603
Abstract
Entangled photons can be used to make measurements with an accuracy beyond that possible with classical light. While most implementations of quantum metrology have used states made up of a single colour of photons, we show that entangled states of two colours can show supersensitivity to optical phase and path-length by using a photonic crystal fibre source of photon pairs inside an interferometer. This setup is relatively simple and robust to experimental imperfections. We demonstrate sensitivity beyond the standard quantum limit and show super-resolved interference fringes using entangled states of two, four, and six photons.
8 pages, 7 figures
References in corpus (6)
- Quantum Optical Metrology -- The Lowdown on High-N00N States
- Beating the Standard Quantum Limit with Four Entangled Photons
- A wavelength-tunable fiber-coupled source of narrowband entangled photons
- Entanglement-enhanced measurement of a completely unknown phase
- Photonic crystal fibre source of photon pairs for quantum information processing
- Nonclassical 2-photon interference with separate intrinsically narrowband fibre sources
Cited by in corpus (13)
- Open-System Dynamics of Entanglement
- Distributed quantum phase estimation with entangled photons
- Coherent absorption of N00N states
- Quantum optical rotatory dispersion
- Optimizing optical Bragg scattering for single-photon frequency conversion
- Characterizing multi-photon quantum interference with practical light sources and threshold single-photon detectors
- High-dimensional cryptographic quantum parameter estimation
- Highly efficient two photon generation from a coherently pumped quantum dot embedded in a microcavity
- Complete spectral characterization of biphotons by simultaneously determining its frequency sum and difference in a single quantum interferometer
- Multicolor continuous-variable quantum entanglement in the Kerr frequency comb
- Enhancing SPDC brightness using elliptical pump shapes
- Open Quantum Systems at Low Temperature
- Multiparameter cascaded quantum interferometer