title: Experimental inhibition of decoherence on flying qubits via "bang-bang" control.
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.
authors: Dipartimento di Fisica, Università di Camerino, I-62032 Camerino (MC), Italy.
authors: S
authors: S
authors: Damodarakurup
authors: M
authors: M
authors: Lucamarini
authors: G
authors: G
authors: Di Giuseppe
authors: D
authors: D
authors: Vitali
authors: P
authors: P
authors: Tombesi