Damian S. Steiger
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View article: Modern Computational Methods in Reinsurance Optimization: From Simulated Annealing to Quantum Branch & Bound
Modern Computational Methods in Reinsurance Optimization: From Simulated Annealing to Quantum Branch & Bound Open
We propose and implement modern computational methods to enhance catastrophe excess-of-loss reinsurance contracts in practice. The underlying optimization problem involves attachment points, limits, and reinstatement clauses, and the objec…
View article: Sparse Simulation of VQE Circuits
Sparse Simulation of VQE Circuits Open
The Variational Quantum Eigensolver (VQE) is a promising algorithm for future Noisy Intermediate-Scale Quantum (NISQ) devices to simulate chemical systems. In this paper, we consider the classical simulation of the iterative Qubit Coupled …
View article: Parallel Tempering for Logic Synthesis
Parallel Tempering for Logic Synthesis Open
The task of logic synthesis is to map a technology-independent representation of an application to hardware-specific operations, taking into account various constraints and trading off different costs associated with the implementation. Co…
View article: Distributed quantum computing with QMPI
Distributed quantum computing with QMPI Open
Practical applications of quantum computers require millions of physical qubits and it will be challenging for individual quantum processors to reach such qubit numbers. It is therefore timely to investigate the resource requirements of qu…
View article: Quantum computing enhanced computational catalysis
Quantum computing enhanced computational catalysis Open
Molecular integrals for the manuscript Quantum computing enhanced computational catalysis, arXiv:2007.14460.
View article: Quantum computing enhanced computational catalysis (Molecular integrals)
Quantum computing enhanced computational catalysis (Molecular integrals) Open
Molecular integrals for the manuscript Quantum computing enhanced computational catalysis, arXiv:2007.14460.
View article: OpenFermion: the electronic structure package for quantum computers
OpenFermion: the electronic structure package for quantum computers Open
Quantum simulation of chemistry and materials is predicted to be an important application for both near-term and fault-tolerant quantum devices. However, at present, developing and studying algorithms for these problems can be difficult du…
View article: Independent security analysis of a commercial quantum random number generator
Independent security analysis of a commercial quantum random number generator Open
We reverse-engineer, test and analyse hardware and firmware of the commercial quantum-optical random number generator Quantis from ID Quantique. We show that > 99% of its output data originates in physically random processes: random timing…
View article: Quantum Algorithm for Spectral Measurement with a Lower Gate Count
Quantum Algorithm for Spectral Measurement with a Lower Gate Count Open
We present two techniques that can greatly reduce the number of gates required to realize an energy measurement, with application to ground state preparation in quantum simulations. The first technique realizes that to prepare the ground s…
View article: ProjectQ: an open source software framework for quantum computing
ProjectQ: an open source software framework for quantum computing Open
We introduce ProjectQ, an open source software effort for quantum computing. The first release features a compiler framework capable of targeting various types of hardware, a high-performance simulator with emulation capabilities, and comp…
View article: A software methodology for compiling quantum programs
A software methodology for compiling quantum programs Open
Quantum computers promise to transform our notions of computation by offering\na completely new paradigm. To achieve scalable quantum computation, optimizing\ncompilers and a corresponding software design flow will be essential. We\npresen…
View article: Entanglement spectroscopy on a quantum computer
Entanglement spectroscopy on a quantum computer Open
We present a quantum algorithm to compute the entanglement spectrum of\narbitrary quantum states. The interesting universal part of the entanglement\nspectrum is typically contained in the largest eigenvalues of the density\nmatrix which c…
View article: 0.5 petabyte simulation of a 45-qubit quantum circuit
0.5 petabyte simulation of a 45-qubit quantum circuit Open
Near-term quantum computers will soon reach sizes that are challenging to\ndirectly simulate, even when employing the most powerful supercomputers. Yet,\nthe ability to simulate these early devices using classical computers is\ncrucial for…
View article: High Performance Emulation of Quantum Circuits
High Performance Emulation of Quantum Circuits Open
As quantum computers of non-trivial size become available in the near future, it is imperative to develop tools to emulate small quantum computers. This allows for validation and debugging of algorithms as well as exploring hardware-softwa…
View article: Heavy Tails in the Distribution of Time to Solution for Classical and Quantum Annealing
Heavy Tails in the Distribution of Time to Solution for Classical and Quantum Annealing Open
For many optimization algorithms the time to solution depends not only on the problem size but also on the specific problem instance and may vary by many orders of magnitude. It is then necessary to investigate the full distribution and es…