A5023323376- Quantum Information and Cryptography
- Cardiovascular Function and Risk Factors
- Optical Network Technologies
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Quantum Computing Algorithms and Architecture
- Quantum optics and atomic interactions
- Cardiovascular Disease and Adiposity
- Cardiac Imaging and Diagnostics
- Cardiac Structural Anomalies and Repair
- Quantum Mechanics and Applications
- Mechanical and Optical Resonators
- Laser-Matter Interactions and Applications
- Advanced Fiber Laser Technologies
- Cardiomyopathy and Myosin Studies
- Advanced Photonic Communication Systems
- Near-Field Optical Microscopy
- Spectroscopy and Laser Applications
- Semiconductor Quantum Structures and Devices
- Elasticity and Material Modeling
- Functional Brain Connectivity Studies
- Pulmonary Hypertension Research and Treatments
- Advanced Optical Sensing Technologies
- Cardiovascular Effects of Exercise
- Cardiac pacing and defibrillation studies
University of Ottawa
2021-2024
National Research Council Canada
2021-2024
University of Calgary
2019
Foothills Medical Centre
2018
Calgary Laboratory Services
2016
Queen's University
2016
Libin Cardiovascular Institute of Alberta
2016
We propose a quantum information processing platform that utilizes the ultrafast time-bin encoding of photons. This approach offers pathway to scalability by leveraging inherent phase stability collinear temporal interferometric networks at femtosecond-to-picosecond timescale. The proposed architecture encodes in bins processed using optically induced nonlinearities and birefringent materials while keeping photons single spatial mode. demonstrate potential for scalable photonic through two...
Quantum communication is the most advanced cryptographic method to distribute secret keys securely through public channels, but actual performance still limited, due noise. This study explores ultimate noise tolerance of quantum by considering a based on spectral, temporal, and spatial mode filtering single photons with high efficiency. The authors also show that actively nearly mode, can occur in environments are noisier three orders magnitude than what traditional methods tolerate....
We offer a perspective on recent advances in picosecond-timescale all-optical switching with applications quantum optics. The switch is based polarization rotation standard single-mode fiber via the optical Kerr effect. By using ultrafast laser pulses and short (∼10 cm) fibers, this technique can achieve duration of ≲1 ps, at repetition rate 80 MHz or above. This high well-suited to optics where experiments operate photon-counting regime. efficiency be ≳99% noise floor just ∼10−4...
The quantum walk (QW) has proven to be a valuable testbed for fundamental inquiries in technology applications such as simulation and search algorithms. Many benefits have been found by exploring implementations of QWs various physical systems, including photonic platforms. Here, we propose platform perform walks based on ultrafast time-bin encoding (UTBE) all-optical Kerr gating. This supports the scalability large number steps walkers while retaining significant degree programmability....
Multiphoton interference is crucial to many photonic quantum technologies. In particular, forms the basis of optical information processing platforms and can lead significant computational advantages. It therefore interesting study arising from various states light in large interferometric networks. Here, we implement a walk highly stable, low-loss, multiport interferometer with up 24 ultrafast time bins. This time-bin comprises sequence birefringent crystals which produce pulses separated...
Wavelength-tunable, time-locked pairs of ultrafast pulses are crucial in modern-day time-resolved measurements. We demonstrate a simple means generating configurable optical pulse sequences: sub-picosecond carved out from continuous wave laser via pump-induced Kerr switching 10 cm commercial single-mode fiber. By introducing dispersion to the pump, near transform-limited switched duration is tuned between 305-570 fs. Two- and four-pulse signal trains also generated by adding birefringent...
The quantum walk (QW) has proven to be a valuable testbed for fundamental inquiries in technology applications such as simulation and search algorithms. Many benefits have been found by exploring implementations of QWs various physical systems, including photonic platforms. Here, we propose novel platform perform walks using an ultrafast time-bin encoding (UTBE) scheme. This supports the scalability large number steps while retaining significant degree programmability. More importantly, time...
We propose a quantum information processing platform that utilizes the ultrafast time-bin encoding of photons. This approach offers pathway to scalability by leveraging inherent phase stability collinear temporal interferometric networks at femtosecond-to-picosecond timescale. The proposed architecture encodes in bins processed using optically induced nonlinearities and birefringent materials while keeping photons single spatial mode. demonstrate potential for scalable photonic through two...
Quantum random walk processes have many intriguing applications in high energy physics including the simulation of parton shower evolution. We will present design and initial results a fiber loop time-bin quantum architecture using hardware platform already operation at Fermilab Network which state photon is defined by its time-of-arrival. The consists an unbalanced Mach-Zehnder interferometer implemented ultrafast electro-optical switch. input switch controls path within interferometer,...
Correlations between the temporal and frequency properties of two photons may be exploited for optical quantum technologies, but they can difficult to measure on ultrafast time scales. In this work, we time-of-arrival correlations energy-time entangled using an Kerr shutter.
Markers of abnormal tissue deformation and fibrosis in remote myocardium following acute myocardial infarction: a comparison diabetics versus non-diabetics performed using spatially matched 4D strain native T1 mapping Alessandro Satriano, Kate Fenwick, Dexter D Waters, Haris Vaid, Yoko Mikami, Naeem Merchant, Carmen P Lydell, Andrew G Howarth, Teresa A Whitman, Derek V Exner, Bobak Heydari, Nowell M Fine, James White
Background The presence and transmurality of posterolateral scar within the left ventricle by late gadolinium enhancement (LGE) imaging has been shown to portend poor response cardiac resynchronization therapy due placement LV lead in this region. Unfortunately, use is contraindicated patients with significant renal dysfunction risk nephrogenic systemic fibrosis. Alternative measures regional myocardial non-viability 4D strain analysis may be highly useful for CRT evaluation heart failure...
Recent experimental progress in quantum optics has enabled measurement of single photons on ultrafast timescales, beyond the resolution limit photon detectors. The energy-time degree freedom emerged as a promising avenue for technologies, entanglement between frequency and temporal properties two can be fully explored utilized. Here, we implement optical Kerr shutters mode fibers to map out sub-picosecond correlations entangled pairs. These measurements, addition joint spectral measurements...
At the fundamental level, quantum communication is ultimately limited by noise. For instance, signals cannot be amplified without introduction of noise in states. Furthermore, photon loss reduces signal-to-noise ratio, accentuating effect Thus, most efforts communications have been directed towards overcoming to achieve longer distances, larger secret key rates, or operate noisier environmental conditions. Here, we propose and experimentally demonstrate a platform for based on ultrafast...