Hugo V. Lepage
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View article: Quantifying the advantages of applying quantum approximate algorithms to portfolio optimisation
Quantifying the advantages of applying quantum approximate algorithms to portfolio optimisation Open
We present a quantum algorithm for portfolio optimisation. Specifically, We present an end-to-end quantum approximate optimisation algorithm (QAOA) to solve the discrete global minimum variance portfolio (DGMVP) model. This model finds a p…
View article: Landscape-Scale Mining and Water Management in a Hyper-Arid Catchment: The Cuajone Mine, Moquegua, Southern Peru
Landscape-Scale Mining and Water Management in a Hyper-Arid Catchment: The Cuajone Mine, Moquegua, Southern Peru Open
The expansion of copper mining on the hyper-arid pacific slope of Southern Peru has precipitated growing concern for scarce water resources in the region. Located in the headwaters of the Torata river, in the department of Moquegua, the Cu…
View article: Landscape-Scale Mining and Water Management in a Hyper-Arid Catchment: The Cuajone Mine, Moquegua, Southern Peru
Landscape-Scale Mining and Water Management in a Hyper-Arid Catchment: The Cuajone Mine, Moquegua, Southern Peru Open
The expansion of copper mining on the hyper-arid pacific slope of southern Peru has precipitated growing concern for scarce water resources in the region. Located in the headwaters of the Torata river, in the department of Moquegua, the Cu…
View article: Pulse-controlled qubit in semiconductor double quantum dots
Pulse-controlled qubit in semiconductor double quantum dots Open
We present a numerically-optimized multipulse framework for the quantum control of a single-electron double quantum dot qubit. Our framework defines a set of pulse sequences, necessary for the manipulation of the ideal qubit basis, that av…
View article: Charge qubits based on ultra-thin topological insulator films
Charge qubits based on ultra-thin topological insulator films Open
We study how to use the surface states in a Bi$_{2}$Se$_{3}$ topological insulator ultra-thin film that are affected by finite size effects for the purpose of quantum computing. We demonstrate that: (i) surface states under the finite size…
View article: Greening and Browning Trends on the Pacific Slope of Peru and Northern Chile
Greening and Browning Trends on the Pacific Slope of Peru and Northern Chile Open
Accurate detection and quantification of regional vegetation trends are essential for understanding the dynamics of landscape ecology and vegetation distribution. We applied a comprehensive trend analysis to satellite data to describe geos…
View article: Greening and Browning Trends on the Pacific Slope of Peru and Northern Chile
Greening and Browning Trends on the Pacific Slope of Peru and Northern Chile Open
Accurate detection and quantification of regional vegetation trends is essential for understanding the dynamics of landscape ecology and vegetation distribution. We applied a comprehensive trend analysis to satellite data to describe geo-s…
View article: Pulse-controlled qubit in semiconductor double quantum dots
Pulse-controlled qubit in semiconductor double quantum dots Open
We present a numerically-optimized multipulse framework for the quantum control of a single-electron charge qubit. Our framework defines a set of pulse sequences, necessary for the manipulation of the ideal qubit basis, that avoids errors …
View article: Entanglement generation via power-of-swap operations between dynamic electron-spin qubits
Entanglement generation via power-of-swap operations between dynamic electron-spin qubits Open
Surface acoustic waves (SAWs) can create moving quantum dots in piezoelectric\nmaterials. Here we show how electron-spin qubits located on dynamic quantum\ndots can be entangled. Previous theoretical and numerical models of quantum-dot\nen…
View article: Quantum advantage in postselected metrology
Quantum advantage in postselected metrology Open
In every parameter-estimation experiment, the final measurement or the postprocessing incurs a cost. Postselection can improve the rate of Fisher information (the average information learned about an unknown parameter from a trial) to cost…
View article: Contextuality Provides Quantum Advantage in Postselected Metrology
Contextuality Provides Quantum Advantage in Postselected Metrology Open
We show that postselection offers a nonclassical advantage in metrology. In every parameter-estimation experiment, the final measurement or the postprocessing incurs some cost. Postselection can improve the rate of Fisher information (the …
View article: Protocol for fermionic positive-operator-valued measures
Protocol for fermionic positive-operator-valued measures Open
In this paper we present a protocol for the implementation of a positive-operator-valued measure (POVM) on massive fermionic qubits. We present methods for implementing nondispersive qubit transport, spin rotations, and spin polarizing bea…