293 citations · 1.6k across the 24 of their papers we have counts for
24 papers
Supermode-based second harmonic generation in a nonlinear interferometer
David Barral, Virginia D'Auria, Florent Doutre +7
We demonstrate supermode-based second harmonic generation in an integrated nonlinear interferometer made of linear and nonlinear directional couplers. We use a fully-fibered pump s…
Configurable heralded two-photon Fock-states on a chip
Xin Hua, Tommaso Lunghi, Florent Doutre +10
Progress in integrated photonics enables combining several elementary functions on single substrates for realizing advanced functionnalized chips. We report a monolithic integrated…
Photorefractive effect in LiNbO-based integrated-optical circuits for continuous variable experiments
François Mondain, Floriane Brunel, Xin Hua +7
We investigate the impact of photorefractive effect on lithium niobate integrated quantum photonic circuits dedicated to continuous variable on-chip experiments. The circuit main b…
Chip-based squeezing at a telecom wavelength
François Mondain, Tommaso Lunghi, Alessandro Zavatta +5
We demonstrate a squeezing experiment exploiting the association of integrated optics and telecom technology as key features for compact, stable, and practical continuous variable…
Broadband integrated beam splitter using spatial adiabatic passage
Tommaso Lunghi, Florent Doutre, Alicia Petonela Rambu +7
Light routing and manipulation are important aspects of integrated optics. They essentially rely on beam splitters which are at the heart of interferometric setups and active routi…
Challenging local realism with human choices
The BIG Bell Test Collaboration, C. Abellán, A. Acín +105
A Bell test is a randomized trial that compares experimental observations against the philosophical worldview of local realism. A Bell test requires spatially distributed entanglem…
Fully guided-wave photon pair source for quantum applications
Panagiotis Vergyris, Florian Kaiser, Elie Gouzien +3
We report a fully guided-wave source of polarisation entangled photons based on a periodically poled lithium niobate waveguide mounted in a Sagnac interferometer. We demonstrate th…
Soft-proton exchange on Magnesium-oxide-doped substrates a route toward efficient and power-resistant nonlinear converters
T. Lunghi, F. Doutre, G. Legoff +5
Despite its attractive features, Congruent-melted Lithium Niobate (CLN) suffers from Photo-Refractive Damage (PRD). This light-induced refractive-index change hampers the use of CL…
High-quality photonic entanglement for wavelength-multiplexed quantum communication based on a silicon chip
Florent Mazeas, Michele Traetta, Marco Bentivegna +15
We report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, th…
Quantum photonics at telecom wavelengths based on lithium niobate waveguides
Olivier Alibart, Virginia D'Auria, Marc De Micheli +6
Integrated optical components on lithium niobate play a major role in standard high-speed communication systems. Over the last two decades, after the birth and positioning of quant…
Optimal analysis of ultra broadband energy-time entanglement for high bit-rate dense wavelength division multiplexed quantum networks
Florian Kaiser, Djeylan Aktas, Bruno Fedrici +3
We demonstrate an experimental method for measuring energy-time entanglement over almost 80 nm spectral bandwidth in a single shot with a quantum bit error rate below 0.5%. Our sch…
On-chip generation of heralded photon-number states
Panagiotis Vergyris, Thomas Meany, Tommaso Lunghi +5
Beyond the use of genuine monolithic integrated optical platforms, we report here a hybrid strategy enabling on-chip generation of configurable heralded two-photon states. More spe…
Entanglement distribution over 150 km in wavelength division multiplexed channels for quantum cryptography
Djeylan Aktas, Bruno Fedrici, Florian Kaiser +3
Granting information privacy is of crucial importance in our society, notably in fiber communication networks. Quantum cryptography provides a unique means to establish, at remote…
Afterpulsing studies of low noise InGaAs/InP single-photon negative feedback avalanche diodes
Boris Korzh, Tommaso Lunghi, Kateryna Kuzmenko +2
We characterize the temporal evolution of the afterpulse probability in a free-running negative feedback avalanche diode (NFAD) over an extended range, from 300 ns to 1…
Practical relativistic bit commitment
Tommaso Lunghi, Jędrzej Kaniewski, Felix Bussieres +4
Bit commitment is a fundamental cryptographic primitive in which Alice wishes to commit a secret bit to Bob. Perfectly secure bit commitment between two mistrustful parties is impo…
A self-testing quantum random number generator
Tommaso Lunghi, Jonatan Bohr Brask, Charles Ci Wen Lim +5
The generation of random numbers is a task of paramount importance in modern science. A central problem for both classical and quantum randomness generation is to estimate the entr…
Absolute calibration of fiber-coupled single-photon detector
Tommaso Lunghi, Boris Korzh, Bruno Sanguinetti +1
We show a setup for characterising the efficiency of a single-photon-detector absolutely and with a precision better of 1%. Since the setup does not rely on calibrated devices and…
Free-running InGaAs single photon detector with 1 dark count per second at 10% efficiency
Boris Korzh, Nino Walenta, Tommaso Lunghi +2
We present a free-running single photon detector for telecom wavelengths based on a negative feedback avalanche photodiode (NFAD). A dark count rate as low as 1 cps was obtained at…
A fast and versatile QKD system with hardware key distillation and wavelength multiplexing
Nino Walenta, Andreas Burg, Dario Caselunghe +17
We present a 625 MHz clocked coherent one-way quantum key distribution (QKD) system which continuously distributes secret keys over an optical fibre link. To support high secret ke…
Experimental bit commitment based on quantum communication and special relativity
T. Lunghi, J. Kaniewski, F. Bussieres +6
Bit commitment is a fundamental cryptographic primitive in which Bob wishes to commit a secret bit to Alice. Perfectly secure bit commitment has been proven impossible through asyn…
Advantages of gated silicon single photon detectors
T. Lunghi, E. Pomarico, C. Barreiro +3
We present a gated silicon single photon detector based on a commercially available avalanche photodiode. Our detector achieves a photon detection efficiency of 45\pm5% at 808 nm w…
Sine gating detector with simple filtering for low-noise infra-red single photon detection at room temperature
Nino Walenta, Tommaso Lunghi, Olivier Guinnard +3
We present and analyze a gated single photon avalanche detector using a sine gating scheme with a simple but effective low-pass filtering technique for fast low-noise single photon…
Free Running Single Photon Detection based on a negative feedback InGaAs APD
Tommaso Lunghi, Claudio Barreiro, Olivier Guinnard +4
InGaAs/InP-based semiconductor avalanche photodiode are usually employed for single-photon counting at telecom wavelength. However they are affected by afterpulsing which limits th…
Anti-bunched photons from a lateral light-emitting diode
Tommaso Lunghi, Giorgio De Simoni, Vincenzo Piazza +4
We demonstrate anti-bunched emission from a lateral-light emitting diode. Sub-Poissonian emission statistic, with a g(0)=0.7, is achieved at cryogenic temperature in the pu…