Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,188
This Month
0
Today
0
Research Volume
13,354 papers in 12 months (+7% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Silicon Spin Qubit Control and Readout Circuits in 22nm FDSOI CMOS
R. Severino, Michele Spasaro, D. Zito·Oct 1, 2020
This paper investigates the implementation of microwave and mm-wave integrated circuits for control and readout of electron/hole spin qubits, as elementary building blocks for future emerging quantum computing technologies. In particular, it summariz...
Efficient Construction of a Control Modular Adder on a Carry-Lookahead Adder Using Relative-Phase Toffoli Gates
Kento Oonishi, Tomoki Tanaka, Shumpei Uno +3 more·Oct 1, 2020
Control modular addition is a core arithmetic function, and we must consider the computational cost for actual quantum computers to realize efficient implementation. To achieve a low computational cost in a control modular adder, we focus on minimizi...
Local invariants of braiding quantum gates—associated link polynomials and entangling power
Pramod Padmanabhan, Fumihiko Sugino, Diego Trancanelli·Oct 1, 2020
For a generic n-qubit system, local invariants under the action of SL(2,C)⊗n characterize non-local properties of entanglement. In general, such properties are not immediately apparent and hard to construct. Here we consider two-qubit Yang–Baxter ope...
Cache Blocking Technique to Large Scale Quantum Computing Simulation on Supercomputers
J. Doi, H. Horii·Oct 1, 2020
Classical computers require large memory resources and computational power to simulate quantum circuits with a large number of qubits. Even supercomputers that can store huge amounts of data face a scalability issue in regard to parallel quantum comp...
Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions
M. Grimm, A. Beckert, G. Aeppli +1 more·Sep 29, 2020
We propose a scheme for universal quantum computing based on Kramers rare-earth ions. Their nuclear spins in the presence of a Zeeman-split electronic crystal field ground state act as 'passive' qubits which store quantum information. The qubits can ...
High Fidelity Entangling Gates in a 3D Ion Crystal under Micromotion
Y. Wu, Z.-D. Liu, W.-D. Zhao +1 more·Sep 28, 2020
Ion trap is one of the most promising candidates for quantum computing. Current schemes mainly focus on a linear chain of up to about one hundred ions in a Paul trap. To further scale up the qubit number, one possible direction is to use 2D or 3D ion...
Quantum circuits of CNOT gates
Marc Bataille·Sep 24, 2020
We study in details the algebraic structure underlying quantum circuits generated by CNOT gates. Our results allow us to propose polynomial heuristics to reduce the number of gates used in a given CNOT gates circuit and we also give algorithms to opt...
TIGER: Topology-aware Assignment using Ising machines Application to Classical Algorithm Tasks and Quantum Circuit Gates
Anastasiia Butko, Ilyas Turimbetov, George Michelogiannakis +3 more·Sep 21, 2020
Optimally mapping a parallel application to compute and communication resources is increasingly important as both system size and heterogeneity increase. A similar mapping problem exists in gate-based quantum computing where the objective is to map t...
On the mathematical structure of quantum models of computation based on Hamiltonian minimisation
J. Biamonte·Sep 21, 2020
Determining properties of ground states of spin Hamiltonians remains a topic of central relevance connecting disciplines of mathematical, theoretical and applied physics. In the last few decades, ground state properties of physical systems have been ...
Towards quantum simulation of spin systems using continuous variable quantum devices
Razieh Annabestani, Brajesh Gupt, Bhaskar Roy Bardhan·Sep 20, 2020
We study Bosonic representation of spin Ising model with the application of simulating two level systems using continuous variable quantum processors. We decompose the time evolution of spin systems into a sequence of continuous variable logical gate...
A polynomial size model with implicit SWAP gate counting for exact qubit reordering
J. Mulderij, K. Aardal, I. Chiscop +1 more·Sep 18, 2020
Due to the physics behind quantum computing, quantum circuit designers must adhere to the constraints posed by the limited interaction distance of qubits. Existing circuits need therefore to be modified via the insertion of SWAP gates, which alter th...
Quantum teleportation of a spin-mapped Majorana zero mode qubit
Heliang Huang, Marek Narozniak, Futian Liang +13 more·Sep 16, 2020
Quantum error correction is widely considered to be an essential ingredient for overcoming decoherence and achieving large-scale quantum computation. Topological quantum computation based on anyons is a promising approach to achieve fault-tolerant qu...
Extended flag gadgets for low-overhead circuit verification
D. Debroy, K. Brown·Sep 16, 2020
Flag verification techniques are useful in quantum error correction for detecting critical faults. Here we present an application of flag-verification techniques for improving postselected performance of near-term algorithms. We extend the definition...
Quantum teleportation of physical qubits into logical code spaces
Yi-Han Luo, Ming-Cheng Chen, Manuel Erhard +13 more·Sep 14, 2020
Significance Quantum teleportation and quantum error correction play crucial roles in fault-tolerant quantum computing. Here, we implemented error-correctable quantum teleportation to manipulate a logical qubit and observed the protection of quantum ...
Cubic phase gates are not suitable for non-Clifford operations on GKP states
Jacob Hastrup, M. V. Larsen, Jonas S Neergaard-Nielsen +2 more·Sep 11, 2020
With the Gottesman-Kitaev-Preskill (GKP) encoding, Clifford gates and error correction can be carried out using simple Gaussian operations. Still, non-Clifford gates, required for universality, require non-Gaussian elements. In their original proposa...
Feynman-path-type simulation using stabilizer projector decomposition of unitaries
Yifei Huang, P. Love·Sep 10, 2020
We propose a classical simulation method for quantum circuits based on decomposing unitary gates into a sum of stabilizer projectors. By only decomposing the non-Clifford gates, we take advantage of the Gottesman-Knill theorem and build a bridge betw...
A four-qubit germanium quantum processor
N. Hendrickx, W. Lawrie, M. Russ +6 more·Sep 9, 2020
The prospect of building quantum circuits1,2 using advanced semiconductor manufacturing makes quantum dots an attractive platform for quantum information processing3,4. Extensive studies of various materials have led to demonstrations of two-qubit lo...
Simulation of wave-particle duality in multipath interferometers on a quantum computer
Mirko Amico, Christoph Dittel·Sep 8, 2020
We present an architecture to investigate wave-particle duality in $N$-path interferometers on a universal quantum computer involving as low as $2{log}_{2}N$ qubits and develop a measurement scheme that allows the efficient extraction of quantifiers ...
Fast simulation of planar Clifford circuits
David Gosset, D. Grier, A. Kerzner +1 more·Sep 7, 2020
A general quantum circuit can be simulated classically in exponential time. If it has a planar layout, then a tensor-network contraction algorithm due to Markov and Shi has a runtime exponential in the square root of its size, or more generally expon...
SlackQ : Approaching the Qubit Mapping Problem with A Slack-aware Swap Insertion Scheme
Chi Zhang, Yan-Hao Chen, Yuwei Jin +3 more·Sep 4, 2020
The rapid progress of physical implementation of quantum computers paved the way for the design of tools to help users write quantum programs for any given quantum device. The physical constraints inherent in current NISQ architectures prevent most q...