Experimental ancilla-assisted qubit transmission against correlated noise using quantum parity checking

Abstract

We report the experimental demonstration of a transmission scheme of photonic qubits over unstabilized optical fibers, which has the plug-and-play feature as well as the ability to transmit any state of a qubit, regardless of whether it is known, unknown, or entangled to other systems. A high fidelity to the noiseless quantum channel was achieved by adding an ancilla photon after the signal photon within the correlation time of the fiber noise and by performing quantum parity checking. Simplicity, maintenance-free feature and robustness against path-length mismatches among the nodes make our scheme suitable for multi-user quantum communication networks.

8 pages, 4 figures; published in New J. Phys. and selected in IOP Select

References in corpus (4)

• Quantum key distribution over 122 km of standard telecom fiber
• Classical and quantum communication without a shared reference frame
• Experimental Quantum Communication without a Shared Reference Frame
• Experimental Fault-Tolerant Quantum Cryptography in a Decoherence-Free Subspace

Cited by in corpus (4)

• Robust photonic entanglement distribution via state-independent encoding onto decoherence-free subspace
• Control-limited perfect state transfer, quantum stochastic resonance and many-body entangling gate in imperfect qubit registers
• Link-space formalism for network analysis
• Memory effects in quantum information transmission across a Hamiltonian dephasing channel