556 citations · 1.6k across the 31 of their papers we have counts for
22 papers · 1 filter
Perfectly secure steganography: hiding information in the quantum noise of a photograph
Bruno Sanguinetti, Anthony Martin, Giulia Traverso +2
We show that the quantum nature of light can be used to hide a secret message within a photograph. Using this physical principle we achieve information-theoretic secure steganograp…
Quantum random number generation for 1.25 GHz quantum key distribution systems
A. Martin, B. Sanguinetti, C. C. W. Lim +2
Security proofs of quantum key distribution (QKD) systems usually assume that the users have access to source of perfect randomness. State-of-the-art QKD systems run at frequencies…
Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
Boris Korzh, Charles Ci Wen Lim, Raphael Houlmann +6
Proposed in 1984, quantum key distribution (QKD) allows two users to exchange provably secure keys via a potentially insecure quantum channel. Since then, QKD has attracted much at…
Quantum random number generation on a mobile phone
Bruno Sanguinetti, Anthony Martin, Hugo Zbinden +1
Quantum random number generators (QRNGs) can significantly improve the security of cryptographic protocols, by ensuring that generated keys cannot be predicted. However, the cost,…
Pulsed source of spectrally uncorrelated and indistinguishable photons at telecom wavelengths
Natalia Bruno, Anthony Martin, Thiago Guerreiro +2
We report on the generation of indistinguishable photon pairs at telecom wavelengths based on a type-II parametric down conversion process in a periodically poled potassium titanyl…
Nonlinear interaction between two heralded single photons
T. Guerreiro, A. Martin, B. Sanguinetti +7
Harnessing nonlinearities strong enough to allow two single photons to interact with one another is not only a fascinating challenge but is central to numerous advanced application…
Narrowband Photon Pair Source for Quantum Networks
F. Monteiro, A. Martin, B. Sanguinetti +2
We demonstrate a compact photon pair source based on a periodically poled lithium niobate nonlinear crystal in a cavity. The cavity parameters are chosen such that the emitted phot…
High efficiency coupling of photon pairs in practice
T. Guerreiro, A. Martin, B. Sanguinetti +3
Multi-photon and quantum communication experiments such as loophole-free Bell tests and device independent quantum key distribution require entangled photon sources which display h…
MHz rate and efficient synchronous heralding of single photons at telecom wavelengths
Enrico Pomarico, Bruno Sanguinetti, Thiago Guerreiro +2
We report on the realization of a synchronous source of heralded single photons at telecom wavelengths with MHz heralding rates and high heralding efficiency. This source is based…
Single-photon space-like antibunching
Thiago Guerreiro, Bruno Sanguinetti, Hugo Zbinden +2
We use heralded single photons to perform an antibunching experiment in which the clicks at the detectors are spacelike separated events. The idea of such experiment dates back to…
Engineering integrated pure narrow-band photon sources
Enrico Pomarico, Bruno Sanguinetti, Clara I. Osorio +2
Engineering and controlling well defined states of light for quantum information applications is of increasing importance as the complexity of quantum systems grows. For example, i…
Experimental amplification of an entangled photon: what if the detection loophole is ignored?
Enrico Pomarico, Bruno Sanguinetti, Pavel Sekatski +2
The experimental verification of quantum features, such as entanglement, at large scales is extremely challenging because of environment-induced decoherence. Indeed, measurement te…
Various quantum nonlocality tests with a simple 2-photon entanglement source
Enrico Pomarico, Jean-Daniel Bancal, Bruno Sanguinetti +2
Nonlocality is a fascinating and counterintuitive aspect of Nature, revealed by the violation of a Bell inequality. The standard and easiest configuration in which Bell inequalitie…
Faithful entanglement swapping based on sum-frequency generation
Nicolas Sangouard, Bruno Sanguinetti, Noe Curtz +3
We show that the entanglement resulting from an entanglement swapping operation performed with spontaneous parametric down-conversion can be made faithful without post-selection us…
32 Bin Near-Infrared Time-Multiplexing Detector with Attojoule Single-Shot Energy Resolution
Patrick Eraerds, Jun Zhang, Enrico Pomarico +3
We present two implementations of photon counting time-multiplexing detectors for near-infrared wavelengths, based on Peltier cooled InGaAs/InP avalanche photo diodes (APDs). A fir…
Cloning Entangled Qubits to Scales One Can See
Pavel Sekatski, Bruno Sanguinetti, Enrico Pomarico +2
By amplifying photonic qubits it is possible to produce states that contain enough photons to be seen with a human eye, potentially bringing quantum effects to macroscopic scales […
Quantum Cloning for Absolute Radiometry
Bruno Sanguinetti, Enrico Pomarico, Pavel Sekatski +2
In the quantum regime information can be copied with only a finite fidelity. This fidelity gradually increases to 1 as the system becomes classical. In this article we show how thi…
Room temperature photon number resolving detector at telecom wavelengths
Enrico Pomarico, Bruno Sanguinetti, Rob Thew +1
Large dynamic range room temperature photon number resolving (PNR) detectors can be very useful for measuring very low light intensities and for analyzing multiphoton quantum state…
Absolute frequency measurements of 85Rb nF7/2 Rydberg states using purely optical detection
L. A. M. Johnson, H. O. Majeed, B. Sanguinetti +2
A three-step laser excitation scheme is used to make absolute frequency measurements of highly excited nF7/2 Rydberg states in 85Rb for principal quantum numbers n=33-100. This wor…
Purification of Single-photon Entanglement
D. Salart, O. Landry, N. Sangouard +8
Single-photon entanglement is a simple form of entanglement that exists between two spatial modes sharing a single photon. Despite its elementary form, it provides a resource as us…
Waveguide-based OPO source of entangled photon pairs
Enrico Pomarico, Bruno Sanguinetti, Nicolas Gisin +5
In this paper we present a compact source of narrow-band energy-time entangled photon pairs in the telecom regime based on a Ti-indiffused Periodically Poled Lithium Niobate (PPLN)…
Precision measurements of quantum defects in the P Rydberg States of Rb
B. Sanguinetti, H. O. Majeed, M. L. Jones +1
Rydberg States are used in our One Atom Maser experiment because they offer a large dipole moment and couple strongly to low numbers of microwave photons in a high Q cavity. Here w…