Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,684 papers in 12 months (-39% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Qubitization of Bosons
Xinyao Huang, Lang Yu, Xuedong Lu +5 more·May 26, 2021
A binary mapping from Fock space of bosonic state to qubits is given. Based on the binary mapping, we construte an algorithm of qubitization of bosons with complexity O(log(N)). As an example, the algorithm of qubitization of bosons in matrix product...
A quantum Hopfield associative memory implemented on an actual quantum processor
N. Miller, S. Mukhopadhyay·May 25, 2021
In this work, we present a Quantum Hopfield Associative Memory (QHAM) and demonstrate its capabilities in simulation and hardware using IBM Quantum Experience.. The QHAM is based on a quantum neuron design which can be utilized for many different mac...
Quantum algorithm for credit valuation adjustments
Javier Alcazar, A. Cadarso, Amara Katabarwa +4 more·May 25, 2021
Quantum mechanics is well known to accelerate statistical sampling processes over classical techniques. In quantitative finance, statistical samplings arise broadly in many use cases. Here we focus on a particular one of such use cases, credit valuat...
IGO-QNN: Quantum Neural Network Architecture for Inductive Grover Oracularization
Areeq I. Hasan·May 25, 2021
We propose a novel paradigm of integration of Grover's algorithm in a machine learning framework: the inductive Grover oracular quantum neural network (IGO-QNN). The model defines a variational quantum circuit with hidden layers of parameterized quan...
Evolving objective function for improved variational quantum optimization
Ioannis Kolotouros, P. Wallden·May 25, 2021
A promising approach to useful computational quantum advantage is to use variational quantum algorithms for optimisation problems. Crucial for the performance of these algorithms is to ensure that the algorithm converges with high probability to a ne...
Parallel Quantum Algorithm for Hamiltonian Simulation
Zhicheng Zhang, Qisheng Wang, M. Ying·May 25, 2021
We study how parallelism can speed up quantum simulation. A parallel quantum algorithm is proposed for simulating the dynamics of a large class of Hamiltonians with good sparse structures, called uniform-structured Hamiltonians, including various Ham...
Quantum Approximate Optimization Algorithm with Adaptive Bias Fields
Yunlong Yu, Chenfeng Cao, C. Dewey +3 more·May 25, 2021
The quantum approximate optimization algorithm (QAOA) transforms a simple many-qubit wavefunction into one which encodes a solution to a difficult classical optimization problem. It does this by optimizing the schedule according to which two unitary ...
Quantum Embedding Search for Quantum Machine Learning
N. Nguyen, Kwang-Cheng Chen·May 25, 2021
This paper introduces an automated search algorithm (QES, pronounced as “quest”), which derives optimal design of entangling layout for supervised quantum machine learning. First, we establish the connection between the structures of entanglement usi...
A Survey and Tutorial on Security and Resilience of Quantum Computing
Abdullah Ash-Saki, M. Alam, Koustubh Phalak +3 more·May 24, 2021
Present-day quantum computers suffer from various noises or errors such as, gate error, relaxation, dephasing, readout error, and crosstalk. Besides, they offer a limited number of qubits with restrictive connectivity. Therefore, quantum programs run...
Deterministic coupling of quantum emitter to surface plasmon polaritons, Purcell enhanced generation of indistinguishable single photons and quantum information processing
Lakshminarayan Sharma, L. Tripathi·May 24, 2021
Abstract Integrated photonic circuits are an integral part of all-optical and on-chip quantum information processing and quantum computer. Deterministically integrated single-photon sources in nanoplasmonic circuits lead to densely packed scalable qu...
Time-evolution of local information: thermalization dynamics of local observables
T. Kvorning, L. Herviou, J. Bardarson·May 24, 2021
Quantum many-body dynamics generically result in increasing entanglement that eventually leads to thermalization of local observables. This makes the exact description of the dynamics complex despite the apparent simplicity of (high-temperature) ther...
Fast Preparation and Detection of a Rydberg Qubit Using Atomic Ensembles.
Wenchao Xu, Aditya V. Venkatramani, Sergio H. Cantu +4 more·May 24, 2021
We demonstrate a new approach for fast preparation, manipulation, and collective readout of an atomic Rydberg-state qubit. By making use of Rydberg blockade inside a small atomic ensemble, we prepare a single qubit within 3 μs with a success probabi...
ArsoNISQ: Analyzing Quantum Algorithms on Near-Term Architectures
Sebastian Brandhofer, S. Devitt, I. Polian·May 24, 2021
While scalable, fully error corrected quantum computing is years or even decades away, there is considerable interest in noisy intermediate-scale quantum computing (NISQ). In this paper, we introduce the ArsoNISQ framework that determines the tolerab...
Locally suppressed transverse-field protocol for diabatic quantum annealing
L. Fry-Bouriaux, D. O'Connor, Natasha Feinstein +1 more·May 24, 2021
Diabatic quantum annealing (DQA) is an alternative algorithm to adiabatic quantum annealing that can be used to circumvent the exponential slowdown caused by small minima in the annealing energy spectrum. We present the locally suppressed transverse-...
Quantum Annealing Continuous Optimisation in Renewable Energy
M. Sharabiani, V. Jakobsen, M. Jeppesen +1 more·May 24, 2021
Renewable energy optimisation poses computationally-intensive challenges. Yet, often the continuous nature of the decision space precludes the use of many emerging, non-von-Neumann computing platforms such as quantum annealing, which are limited to d...
Collapse-in and collapse-out in partial measurement in quantum mechanics and its wise interpretation
G. Long·May 23, 2021
One central issue in quantum mechanics is the relation between the wavefunction and the quantum system it describes. As quantum mechanics is understood in different ways, the wavefunction is given various explanations. Some regard the wavefunction as...
Origin Pilot: a Quantum Operating System for Effecient Usage of Quantum Resources
Wei-cheng Kong, Junchao Wang, Yongjian Han +5 more·May 22, 2021
The operating system is designed to manage the hardware and software resources of a computer. With the development of quantum computing, the management of quantum resources and cooperation between quantum systems and other computing resources (e.g. C...
Variational quantum classifiers through the lens of the Hessian
Pinaki Sen, A. Bhatia·May 21, 2021
In quantum computing, the variational quantum algorithms (VQAs) are well suited for finding optimal combinations of things in specific applications ranging from chemistry all the way to finance. The training of VQAs with gradient descent optimization...
Crosstalk analysis for single-qubit and two-qubit gates in spin qubit arrays
Irina Heinz, G. Burkard·May 21, 2021
Scaling up spin qubit systems requires high-fidelity single-qubit and two-qubit gates. Gate fidelities exceeding $98%$ were already demonstrated in silicon-based single and double quantum dots, whereas for the realization of larger qubit arrays, cros...
Quantum metrology with one auxiliary particle in a correlated bath and its quantum simulation
Wan-Ting He, Huan-yu Guang, Ziang Li +5 more·May 21, 2021
In realistic metrology, entangled probes are more sensitive to noise, especially for a correlated environment. The precision of parameter estimation with entangled probes is even lower than that of the unentangled ones in a correlated environment. In...