Suppression of polarization decoherence for traveling light pulses via bang-bang dynamical decoupling

Abstract

In the propagation of optical pulses through dispersive media, the frequency degree of freedom acts as an effective decohering environment on the polarization state of the pulse. Here we discuss the application of open-loop dynamical-decoupling techniques for suppressing such a polarization decoherence in one-way communication channels. We describe in detail the experimental proof of principle of the "bang-bang" protection technique recently applied to flying qubits in [Damodarakurup et al., Phys. Rev. Lett. 103, 040502]. Bang-bang operations are implemented through appropriately oriented waveplates and dynamical decoupling is shown to be potentially useful to contrast a generic decoherence acting on polarization qubits propagating in dispersive media like, e.g., optical fibers.

14 pages, 15 figures

References in corpus (7)

• Quantum Communication
• Optimized Dynamical Decoupling in a Model Quantum Memory
• Bang-bang control of fullerene qubits using ultra-fast phase gates
• Experimental inhibition of decoherence on flying qubits via bang-bang control
• Experimental Demonstration of Decoherence-Free One-Way Information Transfer
• Overcoming Quantum Noise in Optical Fibers
• Reducing Polarization Mode Dispersion With Controlled Polarization Rotations

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• Temporal steering of entanglement decay with single-shot control
• Temporal steering of entanglement decay with single-shot control