Fiber-optic realization of anisotropic depolarizing quantum channels
arXiv:0707.3728 · doi:10.1364/JOSAB.25.000668
Abstract
We employed an electrically-driven polarization controller to implement anisotropic depolarizing quantum channels for the polarization state of single photons. The channels were characterized by means of ancilla-assisted quantum process tomography using polarization-entangled photons generated in the process of spontaneous parametric down-conversion. The demonstrated depolarization method offers good repeatability, low cost, and compatibility with fiber-optic setups. It does not perturb the modal structure of single photons, and therefore can be used to verify experimentally protocols for managing decoherence effects based on multiphoton interference.
7 pages, 6 figures
References in corpus (2)
Cited by in corpus (16)
- Sudden vanishing of spin squeezing under decoherence
- Experimental Realization of Optimal Noise Estimation for a General Pauli Channel
- Realizing controllable noise in photonic quantum information channels
- Practical Quantum Metrology in Noisy Environments
- Quantum Tomographic Reconstruction with Error Bars: a Kalman Filter Approach
- Experimental implementation of a fully controllable depolarizing quantum operation
- Depolarizing channel parameter estimation using noisy initial states
- Realizing a variable isotropic depolarizer
- Error regions in quantum state tomography: computational complexity caused by geometry of quantum states
- Experimental achievement of the entanglement assisted capacity for the depolarizing channel
- Virtual distillation with noise dilution
- Geometry of Generalized Depolarizing Channels
- Monitored non-adiabatic and coherent-controlled quantum unital Otto heat engines: First four cumulants
- Quantum and semiclassical polarization correlations
- Relative-belief inference in quantum information theory
- Implementation of controllable universal unital optical channels