title: Heralded amplification of photonic qubits.
abstract: We demonstrate postselection free heralded qubit amplification for Time-Bin qubits and single photon states in an all-fibre, telecom-wavelength, scheme that highlights the simplicity, stability and potential for fully integrated photonic solutions. Exploiting high-efficiency superconducting detectors, the gain, fidelity and the performance of the amplifier are studied as a function of loss. We also demonstrate the first heralded single photon amplifier with independent sources. This provides a significant advance towards demonstrating device-independent quantum key distribution as well as fundamental tests of quantum mechanics over extended distances.
authors.forename: Natalia
authors.initials: N
authors.lastname: Bruno
authors.forename: Vittorio
authors.initials: V
authors.lastname: Pini
authors.forename: Anthony
authors.initials: A
authors.lastname: Martin
authors.forename: Varun B
authors.initials: VB
authors.lastname: Verma
authors.forename: Sae Woo
authors.initials: SW
authors.lastname: Nam
authors.forename: Richard
authors.initials: R
authors.lastname: Mirin
authors.forename: Adriana
authors.initials: A
authors.lastname: Lita
authors.forename: Francesco
authors.initials: F
authors.lastname: Marsili
authors.forename: Boris
authors.initials: B
authors.lastname: Korzh
authors.forename: Félix
authors.initials: F
authors.lastname: Bussières
authors.forename: Nicolas
authors.initials: N
authors.lastname: Sangouard
authors.forename: Hugo
authors.initials: H
authors.lastname: Zbinden
authors.forename: Nicolas
authors.initials: N
authors.lastname: Gisin
authors.forename: Rob
authors.initials: R
authors.lastname: Thew