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Updated: Jun 21, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Experimental inhibition of decoherence on flying qubits via "bang-bang" control
S Damodarakurup1, M Lucamarini, G Di Giuseppe
1Dipartimento di Fisica, Università di Camerino, I-62032 Camerino (MC), Italy.
Abstract:
Decoherence may significantly affect the polarization state of optical pulses propagating in dispersive media because of the unavoidable presence of more than a single frequency in the envelope of the pulse. Here we report on the suppression of polarization decoherence in a ring cavity obtained by properly retooling for photonic qubits the "bang-bang" protection technique already employed for nuclear spins and nuclear-quadrupole qubits. Our results show that bang-bang control can be profitably extended to quantum information processes involving flying polarization qubits.
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