Optical interferometry in the presence of large phase diffusion
arXiv:1203.2956 · doi:10.1103/PhysRevA.85.043817
Abstract
Phase diffusion represents a crucial obstacle towards the implementation of high precision interferometric measurements and phase shift based communication channels. Here we present a nearly optimal interferometric scheme based on homodyne detection and coherent signals for the detection of a phase shift in the presence of large phase diffusion. In our scheme the ultimate bound to interferometric sensitivity is achieved already for a small number of measurements, of the order of hundreds, without using nonclassical light.
References in corpus (16)
- Beating the Standard Quantum Limit with Four Entangled Photons
- Entanglement-free Heisenberg-limited phase estimation
- Optimal Quantum Phase Estimation
- Mach-Zehnder Interferometry at the Heisenberg Limit with coherent and squeezed-vacuum light
- Entangled Fock states for Robust Quantum Optical Metrology, Imaging, and Sensing
- Quantum Metrology: Dynamics vs. Entanglement
- Optimal phase measurements with pure Gaussian states
- Quantum metrology with imperfect states and detectors
- Phase detection at the quantum limit with multi-photon Mach-Zehnder interferometry
- Bayesian estimation of one-parameter qubit gates
- Bayesian estimation in homodyne interferometry
- Experimental demonstration of phase measurement precision beating standard quantum limit by projection measurement
- Atom interferometry with trapped Bose-Einstein condensates: Impact of atom-atom interactions
- Quantum-limited metrology in the presence of collisional dephasing
- Collectively enhanced quantum measurements at the Heisenberg limit
- Phase estimation with photon number constraint