Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,509 papers in 12 months (-19% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A near-term quantum simulation of the transverse field Ising model hints at glassy dynamics
Shah Ishmam Mohtashim, Turbasu Chatterjee, Arnav Das +2 more·Jun 21, 2021
We demonstrate quantum circuit simulations of the transverse field Ising model with longitudinal fields, displaying salient features of glassy dynamics. The energy landscape and spin configurations of toy models are considered, using the Variational ...
Moving beyond the Transmon: Noise-Protected Superconducting Quantum Circuits
A. Gyenis, A. Di Paolo, J. Koch +3 more·Jun 18, 2021
Artificial atoms realized by superconducting circuits offer unique opportunities to store and process quantum information with high fidelity. Among them, implementations of circuits that harness intrinsic noise protection have been rapidly developed ...
Experimental Quantum State Measurement with Classical Shadows.
Ting Zhang, Jinzhao Sun, Xiao-Xu Fang +3 more·Jun 18, 2021
A crucial subroutine for various quantum computing and communication algorithms is to efficiently extract different classical properties of quantum states. In a notable recent theoretical work by Huang, Kueng, and Preskill [Nat. Phys. 16, 1050 (2020)...
Moving quantum states without swap via intermediate higher-dimensional qudits
A. Saha, Debasri Saha, Amlan Chakrabarti·Jun 16, 2021
Quantum algorithms can be realized in the form of a quantum circuit. To map quantum circuit for specific quantum algorithm to quantum hardware, qubit mapping is an imperative technique based on the qubit topology. Due to the neighbourhood constraint o...
Uncorrelated problem-specific samples of quantum states from zero-mean Wishart distributions
Rui Han, Weijun Li, Shrobona Bagchi +2 more·Jun 16, 2021
Random samples of quantum states are an important resource for various tasks in quantum information science, and samples in accordance with a problem-specific distribution can be indispensable ingredients. Some algorithms generate random samples by a...
Photoluminescence spectra of point defects in semiconductors: Validation of first-principles calculations
Yu Jin, M. Govoni, G. Wolfowicz +4 more·Jun 16, 2021
Optically and magnetically active point defects in semiconductors are interesting platforms for the development of solid-state quantum technologies. Their optical properties are usually probed by measuring photoluminescence spectra, which provide inf...
Towards quantum 3D imaging devices
C. Abbattista, L. Amoruso, Samuel Burri +23 more·Jun 15, 2021
We introduce a new generation of 3D imaging devices based on quantum plenoptic imaging. Position-momentum entanglement and photon number correlations are exploited to provide a scan-free 3D image after post-processing of the collected light intensity...
Variational quantum eigensolver with reduced circuit complexity
Yu Zhang, L. Cincio, C. Negre +6 more·Jun 14, 2021
The variational quantum eigensolver (VQE) is one of the most promising algorithms to find eigenstates of a given Hamiltonian on noisy intermediate-scale quantum devices (NISQ). The practical realization is limited by the complexity of quantum circuit...
Slowing quantum decoherence of oscillators by hybrid processing
Kimin Park, Jacob Hastrup, Jonas S Neergaard-Nielsen +3 more·Jun 14, 2021
Quantum information encoded into the superposition of coherent states is an illustrative representation of practical applications of macroscopic quantum coherence possessing. However, these states are very sensitive to energy loss, losing their non-c...
Inclusive learning for quantum computing: supporting the aims of quantum literacy using the puzzle game Quantum Odyssey
Laurentiu Nita, N. Chancellor, L. M. Smith +2 more·Jun 13, 2021
With a vast domain of applications and now having quantum computing hardware available for commercial use, an education challenge arises in getting people of various background to become quantum literate. Quantum Odyssey is a new piece of computer so...
Universal terms of the entanglement entropy in a static closed universe
Rodolfo Reis Soldati, L. Menicucci, N. Yokomizo·Jun 12, 2021
Subdominant contributions to the entanglement entropy of quantum fields include logarithmic corrections to the area law characterized by universal coefficients that are independent of the ultraviolet regulator and capture detailed information on the ...
The role of localizable concurrence in quantum teleportation protocols
M. Consiglio, L. Z. Mangion, T. Apollaro·Jun 12, 2021
Teleporting an unknown qubit state is a paradigmatic quantum information processing task revealing the advantage of quantum communication protocols over their classical counterpart. For a teleportation protocol using a Bell state as quantum channel, ...
A practical guide for building superconducting quantum devices
Yvonne Y Gao, M. A. Rol, S. Touzard +1 more·Jun 11, 2021
Quantum computing offers a powerful new paradigm of information processing that has the potential to transform a wide range of industries. In the pursuit of the tantalizing promises of a universal quantum computer, a multitude of new knowledge and ex...
On Applying the Lackadaisical Quantum Walk Algorithm to Search for Multiple Solutions on Grids
J. Carvalho, L. Souza, F. M. P. Neto +1 more·Jun 11, 2021
Quantum computing promises to improve the information processing power to levels unreachable by classical computation. Quantum walks are heading the development of quantum algorithms for searching information on graphs more efficiently than their cla...
Entanglement-based quantum communication complexity beyond Bell nonlocality
Joseph Ho, George Moreno, S. Brito +8 more·Jun 11, 2021
Efficient distributed computing offers a scalable strategy for solving resource-demanding tasks, such as parallel computation and circuit optimisation. Crucially, the communication overhead introduced by the allotment process should be minimised—a ke...
Perturbative Quantum Simulation.
Jinzhao Sun, Suguru Endo, Hui-wen Lin +3 more·Jun 10, 2021
Approximation based on perturbation theory is the foundation for most of the quantitative predictions of quantum mechanics, whether in quantum many-body physics, chemistry, quantum field theory, or other domains. Quantum computing provides an alterna...
CircuitQ: an open-source toolbox for superconducting circuits
Philipp Aumann, Tim Menke, W. Oliver +1 more·Jun 9, 2021
We introduce CircuitQ, an open-source toolbox for the analysis of superconducting circuits implemented in Python. It features the automated construction of a symbolic Hamiltonian of the input circuit and a dynamic numerical representation of the Hami...
Realization of a Universal Quantum Gate Set for Itinerant Microwave Photons
K. Reuer, Jean-Claude Besse, Lucien Wernli +5 more·Jun 7, 2021
Deterministic photon-photon gates enable the controlled generation of entanglement between mobile carriers of quantum information. Such gates have thus far been exclusively realized in the optical domain and by relying on post-selection. Here, we pre...
Noisy intermediate-scale quantum algorithm for semidefinite programming
Kishor Bharti, T. Haug, V. Vedral +1 more·Jun 7, 2021
Semidefinite programs (SDPs) are convex optimization programs with vast applications in control theory, quantum information, combinatorial optimization and operational research. Noisy intermediate-scale quantum (NISQ) algorithms aim to make an efficient...
Precision tomography of a three-qubit donor quantum processor in silicon
M. Ma̧dzik, Serwan Asaad, Akram Youssry +17 more·Jun 6, 2021
Nuclear spins were among the first physical platforms to be considered for quantum information processing1,2, because of their exceptional quantum coherence3 and atomic-scale footprint. However, their full potential for quantum computing has not yet ...