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Quantum rotations

Daniel Kudrow, Kenneth Bier, Zhaoxia Deng, Diana Franklin, Yu Tomita, Kenneth R. Brown, Frederic T. Chong
2013 Proceedings of the 40th Annual International Symposium on Computer Architecture - ISCA '13  
We find that static code generation can, in some cases, lead to a terabyte of machine code to support required rotations.  ...  For the first time, we study a larger range of benchmarks and find that another critical issue is the generation of code sequences for quantum rotation operations.  ...  ACKNOWLEDGEMENTS The quantum benchmarks in this paper were the work of many researchers on our larger team, including John Black (Colorado); Lukas Svec, Aram Harrow (Washington); Chen-Fu Chiang (Sherbrooke  ... 
doi:10.1145/2485922.2485937 dblp:conf/isca/KudrowBDFTBC13 fatcat:d2omtufhjngdzbxv53h3wkflb4

Quantum rotations

Daniel Kudrow, Kenneth Bier, Zhaoxia Deng, Diana Franklin, Yu Tomita, Kenneth R. Brown, Frederic T. Chong
2013 SIGARCH Computer Architecture News  
We find that static code generation can, in some cases, lead to a terabyte of machine code to support required rotations.  ...  For the first time, we study a larger range of benchmarks and find that another critical issue is the generation of code sequences for quantum rotation operations.  ...  ACKNOWLEDGEMENTS The quantum benchmarks in this paper were the work of many researchers on our larger team, including John Black (Colorado); Lukas Svec, Aram Harrow (Washington); Chen-Fu Chiang (Sherbrooke  ... 
doi:10.1145/2508148.2485937 fatcat:wk5gqznnrzagrnnvmsnh3pbcsq

Towards relativistic simulations of magneto-rotational core collapse

P Cerdá-Durán, J A Font
2007 Classical and quantum gravity  
We present a new general relativistic hydrodynamics code specifically designed to study magneto-rotational, relativistic, stellar core collapse.  ...  The code is an extension of an existing (and thoroughly tested) hydrodynamics code, which has been applied in the recent past to study relativistic rotational core collapse.  ...  Acknowledgments We are grateful to Luis Antón for his continuous advice during the development of the numerical code and for many stimulating discussions.  ... 
doi:10.1088/0264-9381/24/12/s11 fatcat:grjqtbdcl5cyjpo6cmre6rsomi

Quantum computation and quantum information†

Marius Nagy, Selim G. Akl
2006 International Journal of Parallel, Emergent and Distributed Systems  
Prospects for building a practical quantum computer are also analyzed.  ...  The paper is intended to be a survey of all the important aspects and results that have shaped the eld of quantum computation and quantum information.  ...  channel quantify the resources required to perform elementary dynamical processes.Since classical physics arises as a special case of quantum physics, all the static and dynamic elements of classical  ... 
doi:10.1080/17445760500355678 fatcat:pgpcvws2vrhi5mkdmnlol3hcuq

Quantum computer-aided design: digital quantum simulation of quantum processors [article]

Thi Ha Kyaw, Tim Menke, Sukin Sim, Abhinav Anand, Nicolas P. D. Sawaya, William D. Oliver, Gian Giacomo Guerreschi, Alán Aspuru-Guzik
2021 arXiv   pre-print
Focusing on superconducting transmon processors as a prominent hardware platform, we compute the static and dynamic properties of individual and coupled transmons.  ...  Here we show how one can design and test the performance of next-generation quantum hardware -- by using existing quantum computers.  ...  In addition, our methodology of encoding multi-level quantum hardware in data qubits and investigating static and dynamic properties with near-and long-term quantum algorithms provides a general framework  ... 
arXiv:2006.03070v3 fatcat:zu3aamka6vhvzf3d5rs5nsonkm

Prospects for Quantum Enhancement with Diabatic Quantum Annealing [article]

E.J. Crosson, D.A. Lidar
2020 arXiv   pre-print
We assess the prospects for algorithms within the general framework of quantum annealing (QA) to achieve a quantum speedup relative to classical state of the art methods in combinatorial optimization and  ...  We argue that all of these protocols can be explored in a state-of-the-art manner by embracing the full range of novel out-of-equilibrium quantum dynamics generated by time-dependent effective transverse-field  ...  ACKNOWLEDGMENTS We are grateful to many of our colleagues in the IARPA-QEO and DARPA-QAFS programs, in particular A. Kerman, E. Rieffel, F. Wilhelm, and K. Zick, for their comments and insights.  ... 
arXiv:2008.09913v1 fatcat:e7wkjkblyrgi7hrklnmzh474vu

A Practical Quantum Instruction Set Architecture [article]

Robert S. Smith, Michael J. Curtis, William J. Zeng
2017 arXiv   pre-print
We introduce an abstract machine architecture for classical/quantum computations---including compilation---along with a quantum instruction language called Quil for explicitly writing these computations  ...  The introduction of this machine dovetails with ongoing development of quantum computing technology, and makes possible portable descriptions of recent classical/quantum algorithms.  ...  This was originally a language to describe the quantum circuits for L A T E X output in [23] , and hence, not an IR in that form. However, the syntax was adapted for executable use in [48] .  ... 
arXiv:1608.03355v2 fatcat:nlrus27dh5cwzgosj4yqm7i2sa

Simulation of Quantum Computers [chapter]

H. De Raedt, K. Michielsen, A. H. Hams, S. Miyashita, K. Saito
2001 Springer Proceedings in Physics  
Our simulation software consists of code that solves the time-dependent Schrödinger equation for a sequence of timedependent Hamiltonians and a graphical user interface to program and control the solver  ...  Simulation of quantum computers de Raedt, Hans; Michielsen, K.; Hams, A.H.; Miyashita, S.; Saito, K. Abstract. We describe a simulation approach to study the functioning of Quantum Computer hardware.  ...  This is not the case for a QC: The internal quantum dynamics of each elementary constituent is a key ingredient of the QC itself.  ... 
doi:10.1007/978-3-642-56577-9_8 fatcat:m55csyjbl5gsbdeuv4ttok3dam

Q# and NWChem: Tools for Scalable Quantum Chemistry on Quantum Computers [article]

Guang Hao Low, Nicholas P. Bauman, Christopher E. Granade, Bo Peng, Nathan Wiebe, Eric J. Bylaska, Dave Wecker, Sriram Krishnamoorthy, Martin Roetteler, Karol Kowalski, Matthias Troyer, Nathan A. Baker
2019 arXiv   pre-print
Fault-tolerant quantum computation promises to solve outstanding problems in quantum chemistry within the next decade.  ...  This schema is generated for arbitrary molecules by NWChem, conveniently accessible, for instance, through Docker containers and a recently developed web interface EMSL Arrows.  ...  ACKNOWLEDGMENTS We thank the broader Microsoft Quantum team for insightful comments and discussions. The PNNL portion of  ... 
arXiv:1904.01131v1 fatcat:cikeppw2f5hc7cpjzi7bbp2wv4

TensorFlow Quantum: A Software Framework for Quantum Machine Learning [article]

Michael Broughton, Guillaume Verdon, Trevor McCourt, Antonio J. Martinez, Jae Hyeon Yoo, Sergei V. Isakov, Philip Massey, Ramin Halavati, Murphy Yuezhen Niu, Alexander Zlokapa, Evan Peters, Owen Lockwood (+17 others)
2021 arXiv   pre-print
We hope this framework provides the necessary tools for the quantum computing and machine learning research communities to explore models of both natural and artificial quantum systems, and ultimately  ...  This framework offers high-level abstractions for the design and training of both discriminative and generative quantum models under TensorFlow and supports high-performance quantum circuit simulators.  ...  X, formerly known as Google[x], is part of the Alphabet family of companies, which includes Google, Verily, Waymo, and others (www.x.company).  ... 
arXiv:2003.02989v2 fatcat:ijeqa4iddzhlfjcofyyitkdthy

AccQOC: Accelerating Quantum Optimal Control Based Pulse Generation [article]

Jinglei Cheng, Haoqing Deng, Xuehai Qian
2020 arXiv   pre-print
In the current Noisy Intermediate-Scale Quantum (NISQ) era, the capability of a quantum machine is limited by the decoherence time, gate fidelity and the number of Qubits.  ...  In this paper, we propose AccQOC, a comprehensive static/dynamic hybrid workflow to transform gate groups (equivalent to matrices) to pulses using QOC (Quantum Optimal Control) with a reasonable compilation  ...  INTRODUCTION The idea of Quantum Computer [2] has been proposed for decades. In recent years, we have witnessed many breakthroughs in building a quantum machine [7] , [10] , [19] .  ... 
arXiv:2003.00376v1 fatcat:fifgw35ezjdnxji6gfcd3cju3y

Quantum chaos and random matrix theory for fidelity decay in quantum computations with static imperfections

K. M. Frahm, R. Fleckinger, D. L. Shepelyansky
2004 European Physical Journal D : Atomic, Molecular and Optical Physics  
We determine the universal law for fidelity decayin quantum computations of complex dynamics in presenceof internal static imperfections in a quantum computer.  ...  The comparison is presented for static imperfection effects and random errors in quantum gates.  ...  In such situations the static imperfections will generate a very significant reduction of the time scale of reliable quantum computation.  ... 
doi:10.1140/epjd/e2004-00038-x fatcat:tbf2k2fpyfc3xdid3o7uhcio3q

Prospects for Spin-Based Quantum Computing in Quantum Dots

Christoph Kloeffel, Daniel Loss
2013 Annual Review of Condensed Matter Physics  
General concepts, relevant quantities, and basic requirements for spin-based quantum computing are explained; opportunities and challenges of spin-orbit interaction and nuclear spins are reviewed.  ...  Experimental and theoretical progress toward quantum computation with spins in quantum dots (QDs) is reviewed, with particular focus on QDs formed in GaAs heterostructures, on nanowire-based QDs, and on  ...  Instead, the universal computing machine should be of a quantum nature, i.e., a "quantum computer".  ... 
doi:10.1146/annurev-conmatphys-030212-184248 fatcat:mbtmwlsekzgifhwszqgpgittvm

The importance of nuclear quantum effects for NMR crystallography [article]

Edgar A. Engel and Venkat Kapil and Michele Ceriotti
2021 arXiv   pre-print
To test the limits of this approximation, we perform a systematic study of the role of finite-temperature and quantum nuclear fluctuations on ^1H, ^13C, and ^15N chemical shieldings in molecular crystals  ...  We find the effect of quantum fluctuations to be comparable in size to the typical errors of predictions of chemical shieldings for static nuclei with respect to experimental measurements, and to improve  ...  EAE and VK acknowledges allocation of computing resources by CSCS under Project IDs s960 and s1000.  ... 
arXiv:2106.14171v2 fatcat:feoiuty7cngibbj7spidfkz2fm

Universal quantum state preparation via revised greedy algorithm [article]

Run-Hong He, Hai-Da Liu, Sheng-Bin Wang, Jing Wu, Shen-Shuang Nie, Zhao-Ming Wang
2021 arXiv   pre-print
However, the standard greedy algorithm, in general, cannot take the global maxima and instead becomes stuck on a local maxima.  ...  Our scheme opens a new avenue of optimization in few-level system and limited action space quantum control problems.  ...  The author Run-hong He would also like to personally thank Jing-Hao Sun and Chen-Chen for useful discussions.  ... 
arXiv:2108.03351v1 fatcat:ojzugazba5c3zdy66rglbbmp6y
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