39 citations · 59 across the 14 of their papers we have counts for
11 papers · 1 filter
Improving the loss threshold for quantum advantage in photonic sensors by complete photon counting
Gerard J. Machado, Yazeed K. Alwehaibi, Guillaume Thekkadath +9
Tolerance to imperfections is a defining performance criterion for quantum sensors. The threshold for achieving a quantum advantage depends on the input state, sensor configuration…
Broadband spectral manipulation of single photons using cross-phase modulation
Kate L. Fenwick, Frédéric Bouchard, Guillaume Thekkadath +3
Manipulating the frequency and bandwidth of light is crucial in classical and quantum applications including communication, spectroscopy, imaging, and signal processing. Such capab…
Ultrafast all-optical modulation of spatially structured photons
Alicia Sit, Frédéric Bouchard, Nicolas Couture +4
Manipulating the structure of single photons in the ultrafast domain is enabling new quantum information processing technologies. At the picosecond timescale, quantum information c…
Ultrafast switching of telecom photon-number states
Kate L. Fenwick, Frédéric Bouchard, Alicia Sit +7
A crucial component of photonic quantum information processing platforms is the ability to modulate, route, convert, and switch quantum states of light noiselessly with low inserti…
Terahertz electro-optic modulation of single photons
Nicolas Couture, Frédéric Bouchard, Alicia Sit +4
The manipulation of visible and near-infrared light at the single-photon level plays a key role in quantum communication systems where information is encoded into photonic degrees…
Quantum enhanced beam tracking surpassing the Heisenberg uncertainty limit
Yingwen Zhang, Duncan England, Noah Lupu-Gladstein +5
Determining a beam's full trajectory requires tracking both its position and momentum (angular) information. However, the product of position and momentum uncertainty in a simultan…
Multiphoton interference in a single-spatial-mode quantum walk
Kate L. Fenwick, Jonathan Baker, Guillaume S. Thekkadath +6
Multiphoton interference is crucial to many photonic quantum technologies. In particular, interference forms the basis of optical quantum information processing platforms and can l…
Gain-induced group delay in spontaneous parametric down-conversion
Guillaume Thekkadath, Martin Houde, Duncan England +4
Strongly-driven nonlinear optical processes such as spontaneous parametric down-conversion and spontaneous four-wave mixing can produce multiphoton nonclassical beams of light whic…
Photonic quantum walk with ultrafast time-bin encoding
Kate L. Fenwick, Frédéric Bouchard, Duncan England +3
The quantum walk (QW) has proven to be a valuable testbed for fundamental inquiries in quantum technology applications such as quantum simulation and quantum search algorithms. Man…
Metrological Advantages in Seeded and Lossy Nonlinear Interferometers
Jasper Kranias, Guillaume Thekkadath, Khabat Heshami +1
The quantum Fisher information (QFI) bounds the sensitivity of a quantum measurement, heralding the conditions for quantum advantages when compared with classical strategies. Here,…
Reducing of a parametric down-conversion source via photon-number resolution with superconducting nanowire detectors
S. Sempere-Llagostera, G. S. Thekkadath, R. B. Patel +2
Multiphoton contributions pose a significant challenge for the realisation of heralded single-photon sources (HSPS) based on nonlinear processes. In this work, we improve the quali…