231 citations · 521 across the 20 of their papers we have counts for
20 papers
Fault-tolerant execution of error-corrected quantum algorithms
Michael A. Perlin, Zichang He, Anthony Alexiades Armenakas +9
Scaling up quantum algorithms to tackle high-impact problems in science and industry requires quantum error correction and fault tolerance. While progress has been made in experime…
Computing with many encoded logical qubits beyond break-even
Shival Dasu, Matthew DeCross, Andrew Y. Guo +42
High-rate quantum error correcting (QEC) codes encode many logical qubits in a given number of physical qubits, making them promising candidates for quantum computation. Implementi…
Certified randomness amplification by dynamically probing remote random quantum states
Minzhao Liu, Pradeep Niroula, Matthew DeCross +49
Cryptography depends on truly unpredictable numbers, but physical sources emit biased or correlated bits. Quantum mechanics enables the amplification of imperfect randomness into n…
End-to-End Quantum Algorithms for the Jones Polynomial
Tuomas Laakkonen, Enrico Rinaldi, Chris N. Self +6
We present an end-to-end algorithmic pipeline where a noisy digital quantum computer is used to approximate the value of the Jones polynomial at the fifth root of unity for any inp…
Measuring Correlation and Entanglement between Molecular Orbitals on a Trapped-Ion Quantum Computer
Gabriel Greene-Diniz, Chris N. Self, Michal Krompiec +4
Quantifying correlation and entanglement between molecular orbitals can elucidate the role of quantum effects in strongly correlated reaction processes. However, accurately storing…
Protecting Expressive Circuits with a Quantum Error Detection Code
Chris N. Self, Marcello Benedetti, David Amaro
A successful quantum error correction protocol would allow quantum computers to run algorithms without suffering from the effects of noise. However, fully fault-tolerant quantum er…
Estimating the Jones polynomial for Ising anyons on noisy quantum computers
Chris N. Self, Sofyan Iblisdir, Gavin K. Brennen +1
The evaluation of the Jones polynomial at roots of unity is a paradigmatic problem for quantum computers. In this work we present experimental results obtained from existing noisy…
Clifford Circuit Initialisation for Variational Quantum Algorithms
M. H. Cheng, K. E. Khosla, C. N. Self +4
We present an initialisation method for variational quantum algorithms applicable to intermediate scale quantum computers. The method uses simulated annealing of the efficiently si…
Characterization of variational quantum algorithms using free fermions
Gabriel Matos, Chris N. Self, Zlatko Papić +2
We study variational quantum algorithms from the perspective of free fermions. By deriving the explicit structure of the associated Lie algebras, we show that the Quantum Approxima…
Quantum machine learning of large datasets using randomized measurements
Tobias Haug, Chris N. Self, M. S. Kim
Quantum computers promise to enhance machine learning for practical applications. Quantum machine learning for real-world data has to handle extensive amounts of high-dimensional d…
Qubit Readout Error Mitigation with Bit-flip Averaging
Alistair W. R. Smith, Kiran E. Khosla, Chris N. Self +1
Quantum computers are becoming increasingly accessible, and may soon outperform classical computers for useful tasks. However, qubit readout errors remain a significant hurdle to r…
Variational quantum algorithm with information sharing
Chris N. Self, Kiran E. Khosla, Alistair W. R. Smith +5
We introduce an optimisation method for variational quantum algorithms and experimentally demonstrate a 100-fold improvement in efficiency compared to naive implementations. The ef…
Simple Mitigation of Global Depolarizing Errors in Quantum Simulations
Joseph Vovrosh, Kiran E. Khosla, Sean Greenaway +3
To get the best possible results from current quantum devices error mitigation is essential. In this work we present a simple but effective error mitigation technique based on the…
Quantum Delocalised-Interactions
A. J. Paige, Hyukjoon Kwon, Selwyn Simsek +3
Classical mechanics obeys the intuitive logic that a physical event happens at a definite spatial point. Entanglement however, breaks this logic by enabling interactions without a…
Geometric description of the Kitaev honeycomb lattice model
Ashk Farjami, Matthew D. Horner, Chris N. Self +2
It is widely accepted that topological superconductors can only have an effective interpretation in terms of curved geometry rather than gauge fields due to their charge neutrality…
Seeing topological edge and bulk currents in time-of-flight images
Alvaro Rubio-García, Chris N. Self, Juan Jose García-Ripoll +1
Here we provide a general methodology to directly measure the topological currents emerging in the optical lattice implementation of the Haldane model. Alongside the edge currents…
Topological bulk states and their currents
Chris N. Self, Alvaro Rubio-García, Juan Jose García-Ripoll +1
We provide evidence that, alongside topologically protected edge states, two-dimensional Chern insulators also support localised bulk states deep in their valance and conduction ba…
Thermally induced metallic phase in a gapped quantum spin liquid - a Monte Carlo study of the Kitaev model with parity projection
Chris N. Self, Johannes Knolle, Sofyan Iblisdir +1
Thermalisation is a probabilistic process. As such, it is generally expected that when we increase the temperature of a system its classical behaviour dominates its quantum coheren…
Conformal energy currents on the edge of a topological superconductor
Chris N. Self, Jiannis K. Pachos, James R. Wootton +1
The boundary of a 2D topological superconductor can be modeled by a conformal field theory. Here we demonstrate the behaviors of this high level description emerging from a microsc…
Quantum memories at finite temperature
Benjamin J. Brown, Daniel Loss, Jiannis K. Pachos +2
To use quantum systems for technological applications we first need to preserve their coherence for macroscopic timescales, even at finite temperature. Quantum error correction has…