Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,586 papers in 12 months (-18% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Measurement-based quantum control of mechanical motion
M. Rossi, D. Mason, Junxin Chen +2 more·May 14, 2018
Controlling a quantum system by using observations of its dynamics is complicated by the backaction of the measurement process—that is, the unavoidable quantum disturbance caused by coupling the system to a measurement apparatus. An efficient measure...
Information-theoretic meaning of quantum information flow and its applications to amplitude amplification algorithms
S. Roy, J. Bae·May 14, 2018
The advantages of quantum information processing are in many cases obtained as consequences of quantum interactions, especially for computational tasks where two-qubit interactions are essential. In this work, we establish the framework of analyzing ...
Superconducting cavity electro-optics: A platform for coherent photon conversion between superconducting and photonic circuits
Linran Fan, Chang-ling Zou, Risheng Cheng +5 more·May 11, 2018
Electro-optical chips promise a quantum link between electronic and optical circuits. Leveraging the quantum information-processing ability of superconducting circuits and long-distance distribution ability of optical photons promises the realization...
High-dimensional optical quantum logic in large operational spaces
Poolad Imany, J. Jaramillo-Villegas, Mohammed S. Alshaykh +6 more·May 11, 2018
The probabilistic nature of single-photon sources and photon–photon interactions encourages encoding as much quantum information as possible in every photon for the purpose of photonic quantum information processing. Here, by encoding high-dimensiona...
Quassical Computing
H. Edward, Cristian S. Calude·May 8, 2018
We present a class of hybrid classical systems using quantum co-processors and point out that unlike purely quantum computers, such hybrids can be both universal and Turing complete; we introduce such quantum-classical hybrids as "quassical." We disc...
A single-photon switch and transistor enabled by a solid-state quantum memory
Shuo Sun, Hyochul Kim, Zhouchen Luo +2 more·May 4, 2018
A single-photon gate A long-standing goal in optics is to produce a solid-state alloptical transistor, in which the transmission of light can be controlled by a single photon that acts as a gate or switch. Sun et al. used a solid-state system compris...
Circuit designs for superconducting optoelectronic loop neurons
J. Shainline, S. Buckley, A. McCaughan +4 more·May 4, 2018
Optical communication achieves high fanout and short delay advantageous for information integration in neural systems. Superconducting detectors enable signaling with single photons for maximal energy efficiency. We present designs of superconducting...
Symmetry-Protected Self-Correcting Quantum Memories
Sam Roberts, S. Bartlett·May 3, 2018
A self-correcting quantum memory can store and protect quantum information for a time that increases without bound with the system size and without the need for active error correction. We demonstrate that symmetry can lead to self-correction in 3D s...
Feedback control of persistent-current oscillation based on the atomic-clock technique
Deshui Yu, R. Dumke·May 2, 2018
We propose a scheme of stabilizing the persistent-current Rabi oscillation based on the flux qubit-resonator-atom hybrid structure. The LC resonator weakly interacts with the flux qubit and maps the persistent-current Rabi oscillation onto the intrar...
Quantum Computing Circuits and Devices
T. Humble, H. Thapliyal, Edgard Muñoz-Coreas +2 more·Apr 27, 2018
Editor’s note: As an emerging technology, quantum computing brings unique promises in creating a fundamentally different paradigm of information processing. This article reviews introductory concepts and building blocks—quantum logic gates and memory...
Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register
V. Negnevitsky, M. Marinelli, Karan K. Mehta +3 more·Apr 25, 2018
Quantum error correction is essential for realizing the full potential of large-scale quantum information processing devices1,2. Fundamental to its experimental realization is the repetitive detection of errors via projective measurements of quantum ...
Quantum Information Processing via Hamiltonian Inverse Quantum Engineering
Alan C. Santos·Apr 23, 2018
In this paper we discuss how we can design Hamiltonians to implement quantum algorithms, in particular we focus in Deutsch and Grover algorithms. As main result of this paper, we show how Hamiltonian inverse quantum engineering method allow us to obt...
Union bound for quantum information processing
Samad Khabbazi Oskouei, S. Mancini, M. Wilde·Apr 22, 2018
In this paper, we prove a quantum union bound that is relevant when performing a sequence of binary-outcome quantum measurements on a quantum state. The quantum union bound proved here involves a tunable parameter that can be optimized, and this tuna...
Integrated photonic platform for quantum information with continuous variables
Francesco Lenzini, J. Janoušek, O. Thearle +10 more·Apr 20, 2018
An integrated optical chip is used for generating, manipulating, and detecting squeezed vacuum and two-mode entanglement. Integrated quantum photonics provides a scalable platform for the generation, manipulation, and detection of optical quantum sta...
Quantum Codes From Classical Graphical Models
Joschka Roffe, Stefan Zohren, D. Horsman +1 more·Apr 20, 2018
We introduce a new graphical framework for designing quantum error correction codes based on classical principles. A key feature of this graphical language, over previous approaches, is that it is closely related to that of factor graphs or graphical...
Hamiltonian surgery: Cheeger-type gap inequalities for nonpositive (stoquastic), real, and Hermitian matrices
Michael Jarret·Apr 18, 2018
Cheeger inequalities bound the spectral gap $\gamma$ of a space by isoperimetric properties of that space and vice versa. In this paper, I derive Cheeger-type inequalities for nonpositive matrices (aka stoquastic Hamiltonians), real matrices, and Her...
A voting scheme with post-quantum security based on physical laws
Hua Dong, Li Yang·Apr 18, 2018
Traditional cryptography is under huge threat along of the evolution of quantum information and computing. In this paper, we propose a new post-quantum voting scheme based on physical laws by using encrypted no-key protocol to transmit message in the...
Optimizing a Polynomial Function on a Quantum Simulator.
Keren Li, Shijie Wei, Fei-Hao Zhang +5 more·Apr 14, 2018
Gradient descent method, as one of the major methods in numerical optimization, is the key ingredient in many machine learning algorithms. As one of the most fundamental way to solve the optimization problems, it promises the function value to move a...
Quantum state redistribution with local coherence
Anurag Anshu, Rahul Jain, A. Streltsov·Apr 13, 2018
Quantum entanglement and coherence are two fundamental resources for quantum information processing. Recent results clearly demonstrate their relevance in quantum technological tasks, including quantum communication and quantum algorithms. In this Le...
Two-mode squeezing operator in circuit QED
E. C. Diniz, D. Z. Rossatto, C. Villas-Bôas·Apr 12, 2018
We theoretically investigate the implementation of the two-mode squeezing operator in circuit quantum electrodynamics. Inspired by a previous scheme for optical cavities (Prado et al. in Phys Rev A 73:043803, 2006), we employ a superconducting qubit ...