Overcoming Quantum Noise in Optical Fibers
arXiv:quant-ph/0307178 · doi:10.1103/PhysRevA.70.062310
Abstract
Noise in optical Telecom fibers is an important limitation on optical quantum data transmission. Unfortunately, the classically successful amplifiers (such as EDFA) cannot be used in quantum communication because of the no-cloning theorem. We propose a simple method to reduce quantum noise: the insertion of phase-shifters and/or beam-splitters at regular distance intervals into a fiber. We analyze in detail the case of qubits encoded into polarization states of low-intensity light, which is of central importance to various quantum information tasks, such as quantum cryptography and communication. We discuss the experimental feasibility of our scheme and propose a simple experiment to test our method.
v2: 10 pages, 1 figure. Significantly rewritten, many details added
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Cited by in corpus (13)
- Transmission Of Optical Coherent State Qubits
- Non-Markovian master equation for a damped oscillator with time-varying parameters
- Suppression of polarization decoherence for traveling light pulses via bang-bang dynamical decoupling
- Robust transmission of non-Gaussian entanglement over optical fibers
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- Exploiting the quantum Zeno effect to beat photon loss in linear optical quantum information processors
- Reducing Polarization Mode Dispersion With Controlled Polarization Rotations
- Preserving photon qubits in an unknown quantum state with Knill Dynamical Decoupling - Towards an all optical quantum memory
- Limitations of practical multi-photon decoherence-free states
- Enhancing parameter estimation precision in dissipative environment with two-photon driving
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