Variational Quantum Algorithms
- M. Cerezo, A. Arrasmith, Patrick J. Coles
- Physics, Computer ScienceNature Reviews Physics
- 16 December 2020
An overview of the field of Variational Quantum Algorithms is presented and strategies to overcome their challenges as well as the exciting prospects for using them as a means to obtain quantum advantage are discussed.
Theory of variational quantum simulation
- Xiao Yuan, Suguru Endo, Qi Zhao, Ying Li, S. Benjamin
- PhysicsQuantum
- 20 December 2018
This work completes the theory of variational quantum simulation of general real and imaginary time evolution and it is applicable to near-term quantum hardware.
Quantum computational chemistry
- Sam McArdle, Suguru Endo, Alán Aspuru-Guzik, S. Benjamin, Xiao Yuan
- Physics, ChemistryReviews of Modern Physics
- 31 August 2018
This review presents strategies employed to construct quantum algorithms for quantum chemistry, with the goal that quantum computers will eventually answer presently inaccessible questions, for example, in transition metal catalysis or important biochemical reactions.
Quantum random number generation
- Xiongfeng Ma, Xiao Yuan, Zhu Cao, B. Qi, Zhen Zhang
- Computer Science
- 30 October 2015
Self-testing quantum random number generators (QRNGs) are studied, in which verifiable randomness can be generated without trusting the actual implementation, and an intermediate category is self-testing QRNG, which provides a tradeoff between the trustworthiness on the device and the random number generation speed.
Variational ansatz-based quantum simulation of imaginary time evolution
- Sam McArdle, Tyson Jones, Suguru Endo, Ying Li, S. Benjamin, Xiao Yuan
- Computer Science, Physicsnpj Quantum Information
- 9 April 2018
This work proposes a variational algorithm that is hybrid, suitable for error mitigation and can exploit shallow quantum circuits, and can be implemented with current quantum computers, and uses it to find the ground-state energy of many-particle systems.
An integrated space-to-ground quantum communication network over 4,600 kilometres
- Yu-Ao Chen, Qiang Zhang, Jian-Wei Pan
- PhysicsNature
- 6 January 2021
An integrated space-to-ground quantum communication network that combines a large-scale fibre network of more than 700 fibre QKD links and two high-speed satellite- to-ground free-space QKd links is demonstrated, achieving quantum key distribution between more than 150 users over a combined distance of 4,600 kilometres.
Intrinsic randomness as a measure of quantum coherence
- Xiao Yuan, Hongyi Zhou, Zhu Cao, Xiongfeng Ma
- Physics
- 15 May 2015
Based on the theory of quantum mechanics, intrinsic randomness in measurement distinguishes quantum effects from classical ones. From the perspective of states, this quantum feature can be summarized…
Hybrid Quantum-Classical Algorithms and Quantum Error Mitigation
- Suguru Endo, Zhenyu Cai, S. Benjamin, Xiao Yuan
- Physics, Computer Science
- 2 November 2020
The basic results for hybrid quantum-classical algorithms and quantum error mitigation techniques are reviewed and it is expected that this review to be a useful basis for future studies.
Variational quantum algorithms for discovering Hamiltonian spectra
- Suguru Endo, Tyson Jones, Sam McArdle, Xiao Yuan, S. Benjamin
- PhysicsPhysical Review A
- 14 June 2018
Calculating the energy spectrum of a quantum system is an important task, for example to analyse reaction rates in drug discovery and catalysis. There has been significant progress in developing…
Source-Independent Quantum Random Number Generation
- Zhu Cao, Hongyi Zhou, Xiao Yuan, Xiongfeng Ma
- Computer SciencePhysical Review X
- 20 August 2015
This work proposes a source-independent scheme for quantum random number generation in which output randomness can be certified, even when the source is uncharacterized and untrusted, and takes into account the finite-key effect with the composable security definition.
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