Dynamical Decoupling in Optical Fibers: Preserving Polarization Qubits from Birefringent Dephasing

Details Dynamical Decoupling in Optical Fibers: Preserving Polarization Qubits from Birefringent Dephasing Dynamical Decoupling in Optical Fibers: Preserving Polarization Qubits from Birefringent Dephasing

2011-05-20

arxiv.org/abs/1105.4164v1

Physics

Quantum Physics

4 pages, 6 figures

Scientific paper

We study preservation of polarization qubits in polarization-maintaining birefringent fibers enhanced with Carr-Purcell-Meiboom-Gill (CPMG) dynamical decoupling sequence implemented with waveplates along the fiber. Very high fidelity can be maintained by implementing such waveplates over a given length of the fiber used as the communication channel with specific input states. We show that this scheme can be particularly useful in maintaining polarization photonic qubits for a useful range of realistic quantum communication channels.

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