Limitations of practical multi-photon decoherence-free states
arXiv:quant-ph/0503120 · doi:10.1103/PhysRevA.72.012308
Abstract
It is shown in this paper that decoherence-free subspace (DFS) of practical multi-photon polarization can not avoid the exponential decoherence even in the same extra-environment if the photons are frequency-anticorrelated. The reason lies in that the condition of collective decoherence is not satisfied in this case. As an example, the evolution of biphoton's decoherence-free state is given. Possible solution for feasible multi-photon's DFS state is also given.
6 pages, no figure
References in corpus (10)
- Experimental Demonstration of Five-photon Entanglement and Open-destination Teleportation
- Robust polarization-based quantum key distribution over collective-noise channel
- Control of decoherence: analysis and comparison of three different strategies
- Decoherence-Free Quantum Information Processing with Four-Photon Entangled States
- Classical and quantum communication without a shared reference frame
- A Magnetic Resonance Realization of Decoherence-Free Quantum Computation
- Relativistically invariant quantum information
- Advances in decoherence control
- Generating Polarization-Entangled Photon Pairs with Arbitrary Joint Spectrum
- Overcoming Quantum Noise in Optical Fibers