2 citations · 4 across the 9 of their papers we have counts for
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Nearly Optimal Amplitude Estimation at any Depth
Jona Erle, Bálint Koczor
We develop a class of amplitude estimation algorithms with tunable circuit depth and circuit repetitions , requiring neither ancilla qubits nor controlled Grover operations.…
Eigenstate Preparation Through Near-Optimal Eigenprobability Filtering
Po-Wei Huang, Bence Bakó, Bálint Koczor
Quantum simulation is expected to be a main application of quantum computers with realistic utility in quantum chemistry, materials science and beyond. However, preparing excited o…
Nanostructure modelling with early fault tolerant quantum computers
Zhu Sun, Christian Binder, Balint Koczor +1
Semiconductor nanostructures are central to many developing technologies. Notably, double quantum dots are especially important for semiconductor spin-qubit architectures, quantum…
Quantum-inspired classical simulation through randomized time evolution
Fredrik Hasselgren, Bálint Koczor
Tensor-network simulations of quantum many-body dynamics are fundamentally limited by entanglement build-up, which leads to exponentially growing computational costs. Furthermore,…
Low-depth amplitude estimation via statistical eigengap estimation
Po-Wei Huang, Bálint Koczor
Amplitude estimation, in its original form, is formulated as phase estimation upon the Grover iterate. Subsequent improvements to the algorithm have eliminated the need for phase e…
A Shadow Enhanced Greedy Quantum Eigensolver
Jona Erle, Balint Koczor
While ground-state preparation is expected to be a primary application of quantum computers, it is also an essential subroutine for many fault-tolerant algorithms. In early fault-t…
Stratified Sampling for Quasi-Probability Decompositions
Joshua W. Dai, Bálint Koczor
Quasi-probability decompositions (QPDs) have proven essential in many quantum algorithms and protocols -- one replaces a ``difficult'' quantum circuit with an ensemble of ``easier'…
Exponential distillation of dominant eigenproperties
Bence Bakó, Tenzan Araki, Bálint Koczor
Estimating observable expectation values in eigenstates of quantum systems has a broad range of applications and is an area where early fault-tolerant quantum computers may provide…
Space-time tradeoff in networked virtual distillation
Tenzan Araki, Joseph F. Goodwin, Bálint Koczor
In contrast to monolithic devices, modular, networked quantum architectures are based on interconnecting smaller quantum hardware nodes using quantum communication links, and offer…